Loading...
HomeMy WebLinkAbout13 - Traffic Impact Study - Baxter Meadows Ph 4 =E� MARVIN & ASSOCIATES 1300 N Transtech Way Billings,MT 59102 TD&H Engineering Attn: David Crawford 234 E. Babcock, Suite 3 Bozeman, MT 59715 January 17, 2013 Re: Baxter Meadows Phase 4 Traffic Impact Study Update January 2013 Submittal Amendment Please allow this letter to serve as an amendment to the Baxter Meadows Phase 4 Subdivision Traffic Impact Study (TIS) submitted on November 28, 2012. This amendment relates to the final configuration of subdivision streets and number of lots contained within the subdivision. The latest street configuration changes involve removal of the Caspian Way street connection between Autumn Grove Street and Vaquero Parkway. Changes in lot dimensions resulted in a northward shift of east-west subdivision streets to allow a single 130,000 square foot lot abutting the north side of Vaquero Parkway, west of Davis Lane. While, it is anticipated that this large lot will be occupied by a church, there is a possibility that this lot could contain as many as 28 multi-family dwelling units. Thus, the final lot count would be 130 single family dwelling units and 28 apartments. Trip Generation The trip generation table is an update to the original (11/28/2012) TIS and reflects the latest dwelling unit counts. The original TIS resulted in 1,099 net average weekday trips (AWT) for the development. Thus, the new configuration would increase that number by 188 AWT. Baxter Meadows Phase 4 Trip Generation Average 2012 UPDATE Weekday Peak AM Hour Peak PM Hour Total Total Total Land Use Number Units Rate Trips Rate Trips Enter Exit Rate Trips Enter Exit 2006 Original Estimate: Code 210 Single Family Units 125 Dwellings '1 1277 '2 97 30 67 "3 131 86 45 Code 220 Apartments 72 1000 SF `4 484 1 `5 39 8 31 `6 57 37 20 Totals 2006 Estimate = 1761 136 38 98 188 123 65 2012 Update Estimate: Code 210 Single Family Units(Totals) 130 Dwellings `1 1323 '2 100 31 69 '3 136 90 46 r r r r r Code 220 Apartments 28 1000 SF '4 188 '5 17 3 14 "7 17 11 6 Less Vaquero Lots Future Development 14 Dwellings "1 170 '2 19 6 13 "3 18 12 6 Less Lots Currently Occupied 4 Dwellings `1 54 '2 12 4 8 '3 6 4 2 2012 Net Total New Trips= 1287 86 24 62 129 85 44 '1 Ln(T)=0.92Ln(X)+2 71 a T=6 72(X) '2 T=0.70(X)+9.43(31%enter) '5 T=0.49()(I+3 73(20%enter) '3 Ln(T)=0.90Ln(X)+0.53(66%enter) '6 T=0 55(X)+17.65(65%enter) '7 T=0 62(X) Mailing Address:P.O Box 80785 Billings,MT 59108-0785 Phone: 406-655-4550 FAX: 406-655-4991 Email: bobm@marvinassociates.com Z=L�� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings, MT 59102 In comparing the above noted table to the trip generation table contained in the November 28, 2012 report, it can be seen that there would little if any change in the peak am and pm trip generation numbers. Since there was a difference in the AWT, the original trip generation table was scrutinized and it was determined that there was a spreadsheet error in the original update report. The original table failed to subtract future trips associated with the 14 lots accessed by Vaquero Parkway from the full development total. Thus, the peak hour trip generation numbers used in the original analysis were almost identical to the trips associated with the new subdivision layout contained herein. Traffic Assignment Even though trip generation in the peak pm hour period would be the same as originally reported, site traffic assignment would be modified by the elimination of the Caspian Way street connection between Autumn Grove Street and Vaquero Parkway. The attached Figure 4 was revised to account for the change in subdivision streets. Note that all of the intersection volumes are the same as the original Figure 4 with the exception of the Vaquero Parkway, Autumn Grove, and Tschache Lane intersections with Davis Lane. The latest subdivision layout would create a situation where Tschache Lane would be the highest volume access rather than Vaquero Parkway. Traffic Impacts The attached Figure 5 revisions show the resultant peak pm hour volumes at all of the intersections along with the relative impact on average weekday traffic on the various street segments. While there was a slight increase in average weekday traffic, all of the pm turning movements are the same as previously reported except for those at the subdivision street intersections with Davis Lane. The attached capacity calculation was completed for the Tschache Lane — Davis Lane intersection. That intersection would operate at level of service (LOS) "A" for all approaches and all movements. Capacity calculations submitted with the November 28, 2012 report would still be valid for all of the other intersections. Conclusions & Recommendations The latest revisions to the subdivision plat would not substantially change the level of impacts original reported in the November 28, 2102 TIS. Thus all of the recommendations set forth in the original document would remain valid. If additional information is required, feel free to contact me Sincerely, Robert R. Marvin, P.E., P.T.O.E. Mailing Address:P.O Box 80785 Billings,MT 59108-0785 Phone: 406-655-4550 FAX: 406-655-4991 Email: bobm@marvinassociates.com lJ N a V a M O *DAV 4ILZ 'N 'and 44LZ 'N a c ;2 'O Ul e7(� Q v ui m (� _ M ey N 8Lz aua sinaa E -ul siwa(3 L L 0) ... f b �`i V �_/� Q N .1 •' �Y � v.•L ••/! spy M �• � _�� .. r Lu rS, l�o •�; x �i d - ~ a 44-'r - o aq� N o r N C b9 a. aAV uosnBiaj _ 3 awd uosnB iad A d) $ v a � N N f7 cc - ��� PDOII ll!W saapuaII a ul 0 LZ .O w, o � 'p2141a>13nd iadaaHco m QW a M o � N Q r� 'aAd 4}LZ 'N •aAd 41LZ 'N O y P P . O p Lm W in IL 4 L. •N� ow i E No � a .3 `x in > 0 co ON M W -0 E isloes s�Aa d ; 'Ul SIAOQ .0 in co ' �• u a V O N [%OL]099 M N a r aAd uosn6.Iaj M aAd uosn6.Ial of y C O d c a in O V/ P R N _ [%b]OLSL •� �CO x POOH IIIW SAOPUDIJ W �� = N 0 O or�h L M N �C °r0 v o • - --� [%9]0ES 'p21 I}a3pnd .iod.IOH a � N U. Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY (General Information Site Information Analyst R Marvin Intersection Tschache&Davis Agency/Co, Marvin&Associates Jurisdiction Bozeman Date Performed 0111712013 Analysis Year 2012 Exist Plus Site Analysis Time Period Peak PM Hour Project Description Baxter Meadow Phase 4 Update East/West Street: Tschache Lane North/South Street: Davis Lane Intersection Orientation: North-South IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 24 215 216 8 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 26 238 0 0 240 8 (veh/h Percent Heavy Vehicles 0 -- 0 -- Median Type Raised curb RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT T T TR Upstream Signal 0 0 Minor Street Eastbound Westbound Movement 7 8 9 10 11 12 L T R L T R 'Volume veh/h) 3 16 Peak-Hour Factor, PHF 0.50 1.00 0.50 1.00 1.00 1.00 Hourly Flow Rate, HFR 6 0 32 0 0 0 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade M 0 0 Flared Approach Y N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delay,Queue Length, and Level of Service Approach Northbound Southbound Westbound Eastbound Movement 1 4 7 8 9 10 11 12 (Lane Configuration LT LR v(veh/h) 26 38 C (m)(veh/h) 1330 882 Vic 0.02 0.04 95%queue length 0.06 0.13 Control Delay(s/veh) 7.8 9.3 LOS A A approach Delay(s/veh) — -- 9.3 Approach LOS -- A Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 1/1712013 3:33 PM file:///C:/Users/Bob/AppData/Local/Temp/u2kCEFB.tmp 1/17/2013 Z=E� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 David Crawford TD&H Engineering 234 E. Babcock, Suite 3 Bozeman, MT 59715 November 28, 2012 Re: Baxter Meadows Phase 4 Traffic Impact Study 2012 Update Please allow this letter and attachments to serve as a summary report for Marvin & Associates' Traffic Impact Study (TIS) update for Baxter Meadows Subdivision Phase 4. The information presented herein updates the TIS completed in February 2007. The original study report was titled "Traffic Impact Study for Preliminary Amended Plat of Baxter Meadows Subdivision P.U.D. Phase 4. Background Baxter Meadows Phase 4 subdivision is located in the southwest corner of Baxter Lane and Davis Lane (see attached Figure 1). It is our understanding that a number of changes were made to the subdivision structure and the current plat submittal will include 130 single family lots and that four of the lots are currently occupied by new dwellings. In addition, the subdivision's planned perimeter roadway (Vaquero Parkway) will not be constructed in the initial phases of development. Since 14 of the subdivision's lots would access directly onto Vaquero Parkway, the net number of new lots in this development phase would be 112. Future development of the 14 Vaquero Parkway lots would be contingent upon construction of Vaquero Parkway and it is anticipated that Vaquero Parkway construction would be only be initiated by development of City of Bozeman park land in the southwest corner of the subdivision. The original subdivision contained 125 single family lots and 72,000 square feet of floor area for apartments. Prior to conducting a TIS update for Phase 3B, we received verbal instructions from Bob Murray (City of Bozeman) that a formal TIS would not be required for Phase 3B or Phase 4 if there have not been substantial traffic volume changes on the potentially impacted street system. Our recent data collection efforts on the 2012 Phase 3B update indicated that while there were significant (>10%) percentage increases on most of the roadways, some of the year 2005 traffic volumes were so low that it was difficult to determine what could be considered "substantial". Electronic count data obtained as a part of the Phase 4 update indicated that potentially impacted roadways within the area of influence of the Phase 4 development were substantially different than the 2007 study. Therefore, this study incorporates most of the analysis procedures that would be performed in a formal traffic impact study. However, intersection analysis was limited to three key intersections where the traffic volumes are of such magnitude that substantive impacts could be associated with development of Phase 4. Baxter Meadows Phase 4—2012 TIS Update =� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 Traffic Counts Electronic counters were placed at three key locations in October 2012. Baxter Lane east of Davis Lane, Davis Lane north of Baxter, and on Oak Street east of Davis. The Appendix contains hourly traffic count summaries for each of these count locations. In addition peak pm hour turning movement counts were taken at the intersection of Oak Street and Davis and at Baxter Lane and Davis Lane. From these counts it was determined that there were some differences between October 2012 turning movement counts and those taken in June of 2012 at the intersection of Baxter and Davis. The Davis Lane approach traffic was greater in October than in June. Attached Figure 2 presents the 2012 traffic volumes at key intersections during the peak PM hour, along with Average Daily Traffic (ADT) volumes extracted from the electronic counts on pertinent street sections and calculated from turning movement volume data on the remaining street segments. The intersection volumes on Davis Lane were balanced to account for slight time variations between counting periods. The percentage change in ADT volumes on separate street segments are noted in Figure 2. In some cases, existing streets did not exist in 2005 and the relative change in volume could not be calculated. Of the streets that did exist in 2005, the lowest percentage increase was 25% on Flanders Mill Road. The highest increase was 500% on Ferguson Avenue because there was very little development in the Baxter Meadows Subdivision in 2005. The most significant increase was 405% on Davis Lane, north of Baxter Lane. The reason for this substantial increase was the construction of a new Davis Lane connection between Baxter Lane and Oak Street, south of Baxter. The new segment of Davis Lane serves as alternate access to commercial developments west of North 19th Avenue and north of Baxter Lane. Even though there has not been a substantial amount of commercial and residential development north of Baxter, the connection to Oak Street opened up the alternate route to large residential developments south of Oak Street. The increased traffic on Davis Lane ultimately resulted in reduced traffic demand on North 19th Avenue. Trip Generation The original TIS indicated that the 125 single family units and 72.000 square feet of apartment space in Phase 4 would produce approximately 1761 trips on the average weekday and 188 in the peak pm hour. The total number of lots in Phase 4 is now proposed to be 130 single family lots with no apartments. Four of the lots are currently occupied and 14 of the lots on Vaquero Parkway cannot be developed until the City Park is developed and Vaquero Parkway is constructed. The table on the following page indicates that the net number of new dwelling units associated with this development is 112 and the number of new trips would be approximately 1099 AV VT or 662 less trips than originally projected. The net number of new trips in the peak pm hour period would be approximately 130 with 86 trips entering and 44 trips exiting the development during that period. Baxter Meadows Phase 4—2012 TIS Update _I!\.�'. MARVIN & ASSOCIATES 1300 N Transtech Way Billings,MT 59102 Baxter Meadows Phase 4 Trip Generation Average 2012 UPDATE Weekday Peak AM Hour Peak PM Hour Tota I Tota I Tota I Land Use Number Units Rate Trips Rate Trips Enter Exit Rate Trips Enter Exit 2006 Original Estimate: Code 210 Single Family Units 125 Dwellings '1 1277 `2 97 30 67 '3 131 86 45 Code 220 Apartments 72 1000 SF "4 484 1 `5 39 8 31 "6 57 37 20 Totals 2006 Estimate= 1761 136 38 98 188 123 65 2012 Update Estimate: Code 210 Single Family Units(Totals) 130 Dwellings '1 1323 •2 100 31 69 '3 136 90 46 Less Vaquero Lots Future Development 14 Dwellings -1 170 '2 19 6 13 '3 18 12 6 Less Lots Currently Occupied 4 Dwellings `1 54 •2 12 4 8 •3 6 4 2 2012 Net Total New Trips i 1099 88 27 611 130 86 44 '1 Ln(T)=0,92Ln(X)+2.71 -4 T=672()Q ^2 T=0.70(X)+9.43(31%enter) "5 T=0.49(X)+3 73(20%enter) '3 Ln(T)=Q90Ln(X)+0 53(66%enter) `6 T=0 55(X)+17 65(65%enter) Trip Distribution The attached Figure 3 presents the calculated trip distribution that would be associated with full development of Phase 3 lots. The percentages were calculated using both the Analogy Method, which relies on the directional distribution of traffic from existing residential properties to predict the directional patterns of new residential developments, and the area of influence method, which relies on shortest travel times to surrounding attractions. These distribution percentages are somewhat different than the 2007 TIS percentages. However, none of the distributions varied by more than 3%. Traffic Assignment Attached Figure 4 shows the site generated traffic assignment based upon the full development of Phase 4. Average weekday site traffic and peak PM hour traffic volumes at site accesses and key intersections are shown. The traffic volumes indicated in Figure 4 were calculated based upon total trip generation and directional distribution percentages. The traffic assignment associated with peak pm hour turning movement volumes were calculated by applying directional distribution percentage to each of the five subdivision accesses individually and calculating relative travel times to and from interior streets. The turning movement volumes resulting at each intersection were totaled to provide the overall traffic flows indicated in Figure 4. It was determined that the highest volume accesses would be Caspian Avenue on Baxter Lane and Vaquero Parkway on Davis Lane Traffic Volume Impacts Attached Figure 5 shows the addition of Phase 4 generated traffic to existing 2012 traffic volumes along and Davis Lane. Also included in Figure 5 are the relative percentage ADT increases that would occur on each street segment. 3 Baxter Meadows Phase 4—2012 TIS Update =U� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 The largest increase would be 9% on Ferguson Avenue and 8% on Davis Lane south of Vaquero Parkway. None of the streets would experience significant (>10%) traffic volume increases on the average weekday. The only increases that could be considered significant are those related to peak pm hour traffic, where the addition of even a minor volume of traffic could degrade the intersections level-of-service (LOS). Capacity Impacts By inspection, it was determined that there would only be three intersections having any potential for substantial impacts: Baxter Lane and Flanders Mill Road, Baxter Lane and Davis Lane, and Oak Street and Davis Lane. Existing (2012) and Existing plus site peak PM hour traffic volumes were used to calculate the relative capacity impacts that would be associated with the development of Phase 4 properties. The attached Appendix contains capacity calculations that were completed using HCS 2010 software. The table below indicates that the addition of site generated traffic would have little if any impact on the level of service (LOS) at the Flanders Mill Road intersection with Baxter Lane, but would have measurable impacts at the intersection of Baxter Lane and Davis Lane and Oak Street and Davis Lane. The northbound and southbound approaches on Davis Lane at Baxter Lane would have substantial increases in control delay and the northbound left-turn movement would go from LOS "D" to "E". At the Oak and Davis intersection the LOS on the southbound approach would go from LOS "B" to LOS "C". Capacity Calculation Summary Existing Existing Plus Site Intersection Approaches LOS Delay Queue LOS Delay Queue Flanders Mill & Baxter Lane Westbound A 7.7 0.2 A 7.7 0.2 Northbound B 10.9 0.6 B 11 0.7 Baxter Lane & Davis Lane Eastbound A 7.8 0.1 A 7.9 0.2 Westbound A 7.6 0.1 A 7.7 0.1 Northbound D 26.1 3.7 D 33.7 4.8 Southbound D 27.1 3.9 D 34.3 5.1 Oak Street& Davis Lane Eastbound A 8.4 0.4 A 8.5 0.5 Southbound B 14.5 1 C 15.5 1.3 In addition to capacity of existing intersections, a capacity calculation for the intersection of Vaquero Parkway and Davis Lane was completed since it would have the highest combined volume of entering traffic of the five subdivision Baxter Meadows Phase 4—2012 TIS Update L=� MARVIN & ASSOCIATES 1300 N Transtech Way Billings,MT 59102 access streets. The calculation (see Appendix) indicates that all approaches to that intersection would operate a LOS "A" with 2012 plus site traffic. Impact Mitigation The reduced LOS at the intersection of Baxter Lane and Davis Lane would need to be mitigated prior to full development of the Baxter Meadows Phases 3 and 4 Subdivision. The initial mitigation measure tested was a change in traffic control from a two-way stop condition to an All-way stop control measure. The attached report Appendix contains the HCS calculations that indicate All-way stop control would accommodate existing plus Phases 3 and 4 site generated traffic volumes with all approach legs and all movements operating at LOS "B" or better. Thus, the initial measure would provide satisfactory mitigation of Phases 3 & 4 development impacts at this intersection. Conclusions Development of Baxter Meadows Phase 4 property, as proposed, would have substantially fewer trips than was originally proposed in the year 2007. With the trip generation potential detailed in this report, full development of Phase 4 properties would have an impact at the intersection of Baxter Lane and Davis Lane that would require mitigation. A substantial volume of traffic has been utilizing Davis Lane as an alternate route to North 19th Avenue, and street improvements have been made on every approach to the intersection except on the north approach. Prior to future widening of Davis Lane, north of Baxter Lane, and implementation of longer term traffic control measures that will eventually be required at this intersection, All-way stop control should be considered as a mitigating measure to impacts associated with Phase 4 development. This intersection currently meets all of the MUTCD warrants for All-way stop control and could be implemented in the very near future. Even though the addition of Phase 4 site traffic at the intersection of Oak Street and Davis Lane would not be sufficient to substantially impact the LOS at that intersection, it appears that rate of traffic growth on Oak Street could begin to stress operations in the near future. All other recommendations contained within the original 2007 TIS that are still applicable would remain for future considerations. The updated analysis reconfirms the traffic assignment and resulting conclusion. If additional information or analysis is deemed necessary, feel free to contact me at any time. Sincerely, Robert R. Marvin, P.E., P.T.O.E 5 Baxter Meadows Phase 4—2012 TIS Update .AME:� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 REPORT FIGURES Baxter Meadows Phase 4—2012 TIS Update qo •aAV 4a6L 'N •aAd 416L 'N I ice\ a c a, co 0 _ II CL 'ant/ 4ILL 'N 'aAV 4ILL 'N a c 0 o c •� V as PUDIIOH g a N 0 V aUgl SIAga M T Vm 0 (A a aAd► Uosn61a:l O t anti► uosn61aj IL i d H 3 L d O a 'a m a paoa IjIW Saapuald e� L Z � a � a •pb }jaij3nd .Iad InH � N W Q Lj C) Z •aAd 41LZ 'N •aAd 441-Z 'N or v Q o d V .j in a r- o Na Iut x v _ m O o 'a c O a w N O W A' V 1 %SOb-f00£b]OS8 °U-[00£b]0 auDI SIADa ' lll--- -- -- Q •ul SIAn46-1�� C4 %Ln O In i o o A.wIld --b-A F a O N r- � " O %005;-[009]OOL co - a N N a p aAd uosnBia:i - 4T -" aAV uosnf.Ia j a i� M M � 1 � O • N p N Ce C3 paob II!W saapuDII N _ a� %SZ-LOO S I]00 Z l 0 0 � i' 0 co co 'tr Go o rTh L t O a � r CN a p L %8£-(Oss]OOti m -pa }la>13nd .iad,ioH " � W � a V N iZ •aAV 41LZ 'N -- 'aAV WZ 'N — c a)1 m o L. x N mNINE ° O' ° 1� augl SIAgd r C4 N Ln wSaboA ; N L in i Q r- CL aA%f Uosn6,Ia �i Q aAd uosnfaa:j � M r r w, L PD011 II!W S,IapuaId LL. c L. x N a OD JL— -Pli 410>12nd .iod.iDH ° M CW 0 a Z _ •and LOU 'N •an = b� 4}LZ 'N � a V N F NMON/ 3Q '^ ^ a n o O �f V N Q cs� aun stna •u.1 shad +$��• 1Jj LSE � on4 c3' N I • �• Y�• �� 1 1 � � V 71 o GG t�A rs o •+ � `* n r- SS N ; r and uosnB ia:j r _ - 4 and uosnBia:i v aQ 99 co PDOU IIIw saapuaId to C =) x mzz •pb jjaj:)nd iad ioH M o r'i C'i U N a 0 a as z 'aAd 4}LZ 'N 'aAd 44LZ 'N O ° u ~ N to ca —Y la m � YI 'II Il II'Cy" " h O O W cT � " T [%bl00Sb = aUDl SIApdfs [%8lOS9b ° c Vt ilk N r �.3wbri N 2.1 ONME MINES u1 0 N O 1 [%blOS9 ��N M a aAd uosnBia j ° 'm -- c 4 aAd uosnWal a c o } SONS In c N a Ln O LU 0 N N [%b]OLS L P w d M _ pnoa ll!w S.lapuald N a" c oHh L u L6 O 00 �§ -pa 11913nd iodjl3H OVEN � 1 N M Y. W O m N MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 APPENDIX TRAFFIC VOLUME SUMMARIES Baxter Meadows Phase 4—2012 TIS Update o—0 'a o 0 0 0 Y N N N N (O M M N N N O V M W( N V O 0 V I- O (D M C e N O o O O O N h lD Ln (O (O co (D m O D) (D cM N c) c) O o (D A m_ m Y O O r M (D V 0) CD (D V 00 h c0 Cl) N M (D V � N 0) D) O N O V N N Ln 00 f� co 6) C) U) LD O r� V N M m (DM t N (V N N N N V M V N 7 U) Q bl C C 0 N 0 N c V N C2O CD co O) MO V (n (n MN (d o .O N L N O N V N V (n P— m M V N N N N N m LY1 p � m N CDr N w N m M N (D C) m 0 V M CO O V co 0) I-- cq 0 v N a0 co 1� N O O V M N h 0 M 0 O CD CDV M I, (n N , V, M V N N N M N N V V V N V N O 0 0 0 0 0 0 0 N O O O O O O O CD N O m 0 V N CD N N CD N CC) V V M 0 7 (D (D O O CD (D M CC) V to N N V M V co N 1M` % O o O O o O O o o O o O o O O O O O O o o O O O N O Y M C') N V (n c0 M (n W o7 (O 4 O m n r N V 0) NF- V G N N O O O O O Ln D) V V (n (O (D (O O? 00 (0 V O O co , N N O W R 0 (f) N f- r (D (D CD a0 (D 0V M M CD O M 0 (D (D u7 (n (n O ((j V N � d r- N .- N N N - N p M 2 C N r c O L (() V N (D V N co O •� m (D m ` r N 3 m N (D O O ((7 O (c) 00 (D M M ' (O (D N M W N N O O (D (D (D V N O N N M V M N N m C C7 ' N r N N 0 0 o a 0 0 0 O O O O O O O •� N U) O O m N M 0 O N O CO CO V N (D0 cu (Oj H N N N � � -V N M V O lmv% m m e a W 0 0 0 0 0 0 o a e o o N N -1 N M O N L) M M O 00 CO M Ln 00 M V m V — O N o a) O O O O O M O) - (D (n (D (,) Ln Ln o0 03 (-� 0 N N .-- O O O O N C. cu o J m CI m m N CO L) 00 N O (n LL7 lD M (n co KN M M (n r ao N N N N (D W (f'1 O ((j V N a0 N O r o w p C m = C N O N C 20 �Q N 20 M M V (D W CO c- O O m CD LJJ NCD ` I 7 m N N O M N O) I� m M 0 f- (n r (D O N C, 0 m O N Cl) (n r M 00 N M �-- N M N (D a) (n M V V M N M V O — — — — — r .- — — N � M N L N 0 0 0 0 0 0 0 0 O O O O O O O O O .� M 7 c O M M (n V N r O co --0 muj V(V CD CC lmv% c 00 rr N C) V (n (0 00 O en- T N N N N N O = m ~ Marvin&Associates Davis Lane North of Baxter Lane Both Directions Hour 10/30/2012 10/31/2012 11/1/2012 Average % of Begin Tues. Wed. Thurs. Weekday Weekda 1 8 12 10 0.2% 2 3 6 5 0.1% 3 14 19 17 0.4% 4 15 15 15 0.3% 5 39 41 40 0.9% 6 87 91 89 2.1% 7 248 246 247 5.7% 8 238 287 263 6.1% 9 187 206 197 4.5% 10 225 247 236 5.4% 11 284 266 275 6.3% 12 275 284 280 6.4% 13 266 296 281 6.5% 14 295 273 284 6.6% 15 336 391 364 8.4% 16 421 422 422 9.7% 17 450 468 459 10.6% 18 326 285 306 7.0% 19 203 196 200 4.6% 20 146 150 148 3.4% 21 73 108 91 2.1% 22 50 68 59 1.4% 23 26 37 32 0.7% 24 14 25 20 0.4% Total 2340 4312 2016 4334 100.0% Hourly Variations 12.0% - 10.0% - --- - -- F- 8.0% --- - -- Q 6.0% - - - - 4.0% - 2.0% 0.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Begin Hour Marvin&Associates Oak Street West of Davis Lane Both Directions Hour 10/30/2012 10/31/2012 11/1/2012 Average % of Begin Tues. Wed. Thurs. Weekday Weekda 1 12 17 15 0.2% 2 4 12 8 0.1% 3 8 11 10 0.1% 4 23 27 25 0.4% 5 65 75 70 1.0% 6 181 164 173 2.5% 7 471 433 452 6.5% 8 429 471 450 6.4% 9 317 369 343 4.9% 10 359 374 367 5.3% 11 467 462 465 6.7% 12 497 492 495 7.1% 13 449 463 456 6.5% 14 489 479 484 6.9% 15 615 588 602 8.6% 16 675 636 656 9.4% 17 730 689 710 10.2% 18 470 419 445 6.4% 19 288 300 294 4.2% 20 209 222 216 3.1% 21 129 130 130 1.9% 22 53 70 62 0.9% 23 30 40 35 0.5% 24 24 19 22 0.3% Total 3712 6874 3370 6978 100.0% Hourly Variations 12.0% 10 0% H 8 0% Q 6 0% 4.0% 2.0% 00% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Begin Hour MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 APPENDIX CAPACITY CALCULATIONS Baxter Meadows Phase 4—2012 TIS Update Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst R Marvin Intersection Baxter&Flanders Mill Agency/Co. Marvin&Assoc Jurisdiction Bozeman ,Date Performed 11127112 Analysis Year Existing 2012 Analysis Time Period Peak PM Project Description East/West Street: Baxter Lane North/South Street: Flanders Mill Road Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 91 28 75 93 Peak-Hour Factor, PHF 1.00 0.80 0.80 0.81 0.81 1.00 Hourly Flow Rate, HFR 0 113 34 92 114 0 (veh/h Percent Heavy Vehicles 0 0 - Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration TR LT Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume veh/h) 38 60 Peak-Hour Factor, PHF 0.78 1.00 0.78 1.00 1.00 1.00 Hourly Flow Rate, HFR 48 0 76 0 0 0 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delay,Queue Length,and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 (Lane Configuration LT LR v(veh/h) 92 124 C (m)(veh/h) 1447 733 vlc 0.06 0.17 95%queue length 0.20 0.61 Control Delay(s/veh) 7.7 10.9 LOS A B Approach Delay(s/veh)l 1 - 10.9 Approach LOS I I -- B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/28/2012 5:24 PM file:///C:/Jsers/Bob/AppData/Local/Temp/u2kE27E.tmp 11/28/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst R Marvin Intersection Baxter&Davis Existing Agency/Co. Marvin&Associates Jurisdiction City of Bozeman Date Performed 1112412012 Analysis Year 2012 Analysis Time Period Peak PM Hour Project Description Baxter Sub. Phase 3 Update East/West Street: Baxterlane North/South Street: Davis lane Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 47 111 25 40 148 62 Peak-Hour Factor, PHF 0.78 0.78 0.78 0.85 0.85 0.85 Hourly Flow Rate, HFR 60 142 32 47 174 72 (veh/h) Percent Heavy Vehicles 0 -- -- 0 -- Median Type Two Way Left Turn Lane RT Channelized 0 0 Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume(veh/h) 25 140 45 15 145 35 Peak-Hour Factor. PHF 0.82 0.82 0.82 0.80 0.80 0.80 Hourly Flow Rate, HFR 30 170 54 18 181 43 veh/h Percent Heav Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 1 0 1 0 Configuration LT R LTR Delay, Queue Length,and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L L LT R LTR v(veh/h) 60 47 200 54 242 C(m)(veh/h) 1332 1415 334 893 398 v/C 0.05 0.03 0.60 0.06 0.61 95%queue length 0.14 0.10 3.67 0.19 3.88 Control Delay(s/veh) 7.8 7.6 30.6 9.3 27.1 LOS A A D A D Approach Delay(s/veh) -- 26.1 27.1 Approach LOS -- -- D D Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/24/2012 3:50 PM file:///C:/Users/Bob/AppData/Local/Temp/u2k5D4A.tmp 11/24/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Oak and Davis Agency/Co. IMarvin &Associates Jurisdiction Bozeman Date Performed 11112112012 Analysis Year 2012 Existing Analysis Time Period J,Peak PM Protect Description Baxter Meadows Phase 4 East/West Street: Oak Street North/South Street: Davis Lane Intersection Orientation. East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R 'Volume veh/h 130 190 255 80 Peak-Hour Factor, PHF 0.92 0.92 1.00 1.00 0.92 0.92 Hourly Flow Rate, HFR 141 206 0 0 277 86 (veh/h) Percent Heavy Vehicles 0 0 Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LT TR Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume (veh/h) 75 135 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.92 1.00 0.92 Hourly Flow Rate, HFR 0 0 0 81 0 146 (veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 1 0 1 Configuration L R Delay,Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT L R v(veh/h) 141 81 146 C (m)(veh/h) 1207 312 725 v1C 0.12 0.26 0.20 95%queue length 0.40 1.02 0.75 Control Delay(s/veh) 8.4 20.5 11.2 LOS A C 8 Approach Delay(s/veh) 14.5 Approach LOS - B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5 6 Generated: 11/24/2012 3:40 PM file:///C:/tJsers/Bob/AppData/Local/Temp/u2kE483.tmp 11/24/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Baxter&Flanders Mill Agency/Co. IMarvin&Assoc Jurisdiction Bozeman Date Performed 111127112 Analysis Year Exist 2012 Plus Site Traffic Analysis Time Period IPeak PM Project Description Baxter Meadows Phase 4 Update East/West Street: Baxter Lane North/South Street: Flanders Mill Road Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume(veh/h) 96 28 78 95 Peak-Hour Factor, PHF 1.00 0.80 0.80 0.81 0.81 1.00 Hourly Flow Rate, HFR 0 119 34 96 117 0 (veh/h) Percent Heavy Vehicles 0 -- 0 -- Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration TR LT U stream Si nal 1 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume(veh/h) 38 65 Peak-Hour Factor, PHF 0.78 1.00 0.78 1.00 1.00 1.00 Hourly Flow Rate, HFR 48 0 83 0 0 0 (veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delay,Queue Length,,,, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR v(veh/h) 96 131 C(m)(veh/h) 1440 728 V/c 0.07 0.18 95%queue length 0.21 0.65 Control Delay(s/veh) 7.7 11.0 LOS A B Approach Delay(s/veh) -- 11.0 Approach LOS B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:38 PIM file:///C:/Jsers/Bob/AppData/Local/Temp/u2kD549.tmp 11/27/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Baxter&Davis Agency/Co. IMarvin &Associates Jurisdiction City of Bozeman Date Performed 11112712012 Analysis Year 2012 Exist Plue Site Traffic Analysis Time Period jPeak PM Hour Project Description Baxter Sub. Phase 3 Update East/West Street: Baxter Lane North/South Street: Davis lane Intersection Orientation: East-West IStudy Period (hrs): 0.25 'Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h) 52 119 29 46 164 62 Peak-Hour Factor, PHF 0.78 0.78 0.78 0.85 085 0,85 Hourly Flow Rate, HFR 66 152 37 54 192 72 veh/h (Percent Heavy Vehicles 0 - 0 -- Median Type Two Way Left Turn Lane RT Channelized 0 0 Lanes 1 1 0 1 1 0 Configuration L TR L TR U stream Si nal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R 'Volume(veh/h) 27 142 48 15 149 46 Peak-Hour Factor, PHF 0.82 0.82 0.82 0.80 0.80 0.80 Hourly Flow Rate, HFR 32 173 58 18 186 57 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 1 0 1 0 Configuration LT R LTR Delay, Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L L LT R LTR v(veh/h) 66 54 205 58 261 C(m)(veh/h) 1312 1397 296 879 373 v/c 0.05 0.04 0.69 0.07 0.70 95%queue length 0.16 0.12 4.76 0.21 5.12 Control Delay(s/veh) 7.9 7.7 40.6 9.4 34.3 LOS A A E A D Approach Delay(s/veh) - - 33.7 34.3 Approach LOS - — D D Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/28/2012 5:26 PM file:///C:/Users/Bob/AppData/Local/Temp/u2k5F 1 C.tmp 11/28/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information nal st R Marvin Intersection Oak and Davis- enc /Co. Marvin &Associates Jurisdiction Bozeman Date Performed 1112712012 Analysis Year 2012 Exist Plus Site Traffic Analysis Time Period Peak PM Project Description Baxter Meadows Phase 4 East/West Street: Oak Street North/South Street: Davis Lane Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h) 143 190 255 96 (Peak-Hour Factor, PHF 0.92 0.92 1.00 1.00 0.92 0.92 Hourly Flow Rate, HFR 155 206 0 0 277 104 (veh/h (Percent Heavy Vehicles 0 -- -- 0 -- Median Type Undivided RT Channelized 0 0 (Lanes 0 1 0 0 1 0 Configuration LT TR iU stream Si nal 1 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume (veh/h) 82 142 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.92 1.00 0.92 Hourly Flow Rate, HFR 0 0 0 89 0 154 (veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 1 0 1 Configuration L L R Delay,Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT L R v(veh/h) 155 89 154 C (m)(veh/h) 1189 292 717 vlc 0.13 0.30 1 0.21 95%queue length 0.45 1.25 0.81 Control Delay(s/veh) 8.5 22.6 11.4 LOS A C I B Approach Delay(s/veh) 15.5 Approach LOS I — — C Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:34 PM file:///C:[Users/Bob/AppData/Local/Temp/u2kBBDO.tmp 11/27/2012 All-Way Stop Control Page 1 of 1 ALL-WAY STOP CONTROL ANALYSIS General Information Site Information Analyst R Marvin Intersection IBaxter&Davis Agency/Co Marvin&Assoc Jurisdiction 113ozeman Date Performed 1112717012 Analysis Year 12012 Exist Plus Phase 3&4 Analysis Time Period Peak PM Project ID Baxter Meadows Phase 4 Update East/West Street: Baxter Lane North/South Slreel: Davis Lane Volume Adjustments and Site Characteristics Approach Eastbound Westbound Movement L T R L T R Volume(veh/h) 59 140 34 46 199 62 %Thrus Left Lane Approach Northbound Southbound Movement L T R L T R Volume(veh/h) 35 128 39 15 119 55 %Thrus Left Lane Eastbound Westbound Northbound Southbound L1 L2 L1 L2 L1 L2 L1 L2 Configuration L TR L TR LT R LTR PHF 0.75 0.75 0.80 0.80 0.78 0.78 0.79 Flow Rate(veh/h) 78 231 57 325 208 50 237 Heavy Vehicles 0 0 0 0 0 0 0 No.Lanes 2 2 2 1 Geometry Group 5 5 5 4b Duration,T 0.25 Saturation Headway Adjustment Worksheet Prop.Left-Turns 1.0 0.0 1.0 0.0 0.2 0.0 0.1 Prop.Right-Tums 0.0 0.2 0.0 0.2 0.0 1.0 0.3 Prop.Heavy Vehicle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 hLT-adj 0.5 0.5 0.5 0.5 0.5 0.5 0.2 0.2 hRT-adj 1 -0.7 1 -0.7 1 -0.7 -0.7 -0.7 -0.7 1 -0.6 -0.6 hHV-adj 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 hadj,computed 0.5 -0.1 0.5 -0.2 0.1 -0.7 -0.2 t)e arture Headway and Service Time hd,initial value(s) 3.20 3.20 3.20 3.20 3.20 3.20 3.20 x,initial 0.07 0.21 0.05 0.29 0.18 0.04 0.21 hd,final value(s) 7.46 6.82 7.32 6.65 7.26 6.44 6.94 x,final value 0.16 0.44 0.12 0.60 0.42 0.09 0.46 Move-up time,m(s) 2.3 2.3 2.3 2.3 service Time,is(s) 5.2 4.5 5.0 4.3 5.0 4.1 4.6 Icapacity and Level of Service Eastbound Westbound Northbound Southbound L1 L2 L1 L2 L1 L2 L1 L2 Capacity(veh/h) 328 481 307 521 458 300 485 Delay(s/veh) 11.60 14.71 10.98 18.81 15.09 9.77 15.34 LOS B B B C C A C Approach:Delay(s/veh) 13.92 17.64 14.06 15.34 LOS B C B C Intersection Delay(s/veh) 15.43 Intersection LOS C Copyright©2010 University of Florida,All Rights Reserved NCS+TM Version 5.6 Generated: 11/27/2012 4:52 PM file:///C:[Users/Bob/AppData/Local/Temp/u2k72EE.tmp 1 1/27/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Va uero&Davis Agency/Co. Marvin &Associates Jurisdiction Bozeman Date Performed 11112712012 Analysis Year 2012 Exist Analysis Time Period IPeak PM Hour Project Description Baxter Meadow Phase 4 Update East/West Street: Vaquero Way North/South Street: Davis Lane Intersection Orientation: North-South IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 21 218 215 3 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 23 242 0 0 238 3 (veh/h) Percent Heavy Vehicles 0 -- 0 - Median Type Raised curb RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT T T TR Upstream Signal 0 0 Minor Street Eastbound Westbound Movement 7 8 9 10 11 12 L T R L T R Volume (veh/h) 2 9 Peak-Hour Factor, PHF 0.50 1.00 0.50 1.00 1.00 1.00 Hourly Flow Rate, HFR 4 0 18 0 0 0 veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach y N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach Northbound Southbound Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR v(veh/h) 23 22 C(m)(veh/h) 1337 879 v/c 0.02 0.03 95%queue length 0.05 0.08 Control Delay(s/veh) 7.7 9.2 LOS A A Approach Delay(s/ve4_ __ 9.2 Approach LOS -- A Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:44 PM file:///C:/Users/Bob/AppData/Local/Temp/u2k8DDE.tmp 11/27/2012 MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 TD&H Engineering Attn: David Crawford 234 E. Babcock, Suite 3 Bozeman, MT 59715 December 4, 2012 Re: Baxter Meadows Phase 4 Traffic Impact Study Update - Amendment We were just informed that the final layout of the Baxter Meadows Phase 4 Subdivision would contain three more single family lots than was used in the in the Traffic Impact Study submitted on November 28, 2012. The three additional lots would represent an increase of approximately 2.6% in total trip generation, or 29 average weekday trips and approximately 3 trips in the peak pm hour. Our study indicated that no substantial impacts would be associated with Baxter Meadows Phase 4 development. In addition, the traffic volume increases on the surrounding street system were not significant (>10%) relative to existing traffic volumes. An inspection of our original capacity analysis indicates that an additional 3 vehicles during the peak pm hour period would not change the level of impacts contained within the report. Rather than redo the analysis, modify most of the attachments, and resubmit the entire document, we respectfully request that this letter be accepted as an amendment to the letter report dated November 28, 2012. If additional information is required, feel free to contact me. Sincerely, Robert R. Marvin, P.E., P.T.O.E Mailing Address:P.O Box 80785 Billings,MT 59108-0785 Phone: 406-655-4550 FAX: 406-655-4991 Email: bob m@marvinassociates com L/L/LJLJL, MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 David Crawford TD&H Engineering 234 E. Babcock, Suite 3 Bozeman, MT S971 S November 28, 2012 Re: Baxter Meadows Phase 4 Traffic Impact Study 2012 Update Please allow this letter and attachments to serve as a summary report for Marvin & Associates' Traffic Impact Study (TIS) update for Baxter Meadows Subdivision Phase 4. The information presented herein updates the TIS completed in February 2007. The original study report was titled "Traffic Impact Study for Preliminary Amended Plat of Baxter Meadows Subdivision P.U.D. Phase 4. Background Baxter Meadows Phase 4 subdivision is located in the southwest corner of Baxter Lane and Davis Lane (see attached Figure 1). It is our understanding that a number of changes were made to the subdivision structure and the current plat submittal will include 130 single family lots and that four of the lots are currently occupied by new dwellings. In addition, the subdivision's planned perimeter roadway (Vaquero Parkway) will not be constructed in the initial phases of development. Since 14 of the subdivision's lots would access directly onto Vaquero Parkway, the net number of new lots in this development phase would be 112. Future development of the 14 Vaquero Parkway lots would be contingent upon construction of Vaquero Parkway and it is anticipated that Vaquero Parkway construction would be only be initiated by development of City of Bozeman park land in the southwest corner of the subdivision. The original subdivision contained 125 single family lots and 72,000 square feet of floor area for apartments. Prior to conducting a TIS update for Phase 3B, we received verbal instructions from Bob Murray (City of Bozeman) that a formal TIS would not be required for Phase 3B or Phase 4 if there have not been substantial traffic volume changes on the potentially impacted street system. Our recent data collection efforts on the 2012 Phase 3B update indicated that while there were significant (>10%) percentage increases on most of the roadways, some of the year 2005 traffic volumes were so low that it was difficult to determine what could be considered "substantial". Electronic count data obtained as a part of the Phase 4 update indicated that potentially impacted roadways within the area of influence of the Phase 4 development were substantially different than the 2007 study. Therefore, this study incorporates most of the analysis procedures that would be performed in a formal traffic impact study. However, intersection analysis was limited to three key intersections where the traffic volumes are of such magnitude that substantive impacts could be associated with development of Phase 4. 1 Baxter Meadows Phase 4—2012 TIS Update =� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings, MT 59102 Traffic Counts Electronic counters were placed at three key locations in October 2012: Baxter Lane east of Davis Lane, Davis Lane north of Baxter, and on Oak Street east of Davis. The Appendix contains hourly traffic count summaries for each of these count locations. In addition peak pm hour turning movement counts were taken at the intersection of Oak Street and Davis and at Baxter Lane and Davis Lane. From these counts it was determined that there were some differences between October 2012 turning movement counts and those taken in June of 2012 at the intersection of Baxter and Davis. The Davis Lane approach traffic was greater in October than in June. Attached Figure 2 presents the 2012 traffic volumes at key intersections during the peak PM hour, along with Average Daily Traffic (ADT) volumes extracted from the electronic counts on pertinent street sections and calculated from turning movement volume data on the remaining street segments. The intersection volumes on Davis Lane were balanced to account for slight time variations between counting periods. The percentage change in ADT volumes on separate street segments are noted in Figure 2. In some cases, existing streets did not exist in 2005 and the relative change in volume could not be calculated. Of the streets that did exist in 2005, the lowest percentage increase was 25% on Flanders Mill Road. The highest increase was 500% on Ferguson Avenue because there was very little development in the Baxter Meadows Subdivision in 2005. The most significant increase was 405% on Davis Lane, north of Baxter Lane. The reason for this substantial increase was the construction of a new Davis Lane connection between Baxter Lane and Oak Street, south of Baxter. The new segment of Davis Lane serves as alternate access to commercial developments west of North 19th Avenue and north of Baxter Lane. Even though there has not been a substantial amount of commercial and residential development north of Baxter, the connection to Oak Street opened up the alternate route to large residential developments south of Oak Street. The increased traffic on Davis Lane ultimately resulted in reduced traffic demand on North 19th Avenue. Trip Generation The original TIS indicated that the 125 single family units and 72.000 square feet of apartment space in Phase 4 would produce approximately 1761 trips on the average weekday and 188 in the peak pm hour. The total number of lots in Phase 4 is now proposed to be 130 single family lots with no apartments. Four of the lots are currently occupied and 14 of the lots on Vaquero Parkway cannot be developed until the City Park is developed and Vaquero Parkway is constructed. The table on the following page indicates that the net number of new dwelling units associated with this development is 112 and the number of new trips would be approximately 1099 AWT or 662 less trips than originally projected. The net number of new trips in the peak pm hour period would be approximately 130 with 86 trips entering and 44 trips exiting the development during that period. Baxter Meadows Phase 4—2012 TIS Update L=/t •2L., MARVIN & ASSOCIATES 1300 N Transtech Way Billings,MT 59102 Baxter Meadows Phase 4 Trip Generation Average 2012 UPDATE Weekday Peak AM Hour Peak PM Hour Total Total Total Land Use Number Units gate Trips Rate Trips Enter Exit Rate Trips Enter Exit 2006 Original Estimate: Code 210 Single Family Units 125 Dwellings "1 1277 '2 97 30 67 '3 131 86 45 Code 220 Apartments 72 1000 SF '4 484 1 -5 39 8 31 •6 57 37 20 Totals 2006 Estimate = 1761 136 38 98 188 123 65 2012 Update Estimate: Code 210 Single Family Units(Totals) 130 Dwellings '1 1323 `2 100 31 69 `3 136 90 46 Less Vaquero Lots Future Development 14 Dwellings '1 170 `2 19 6 13 •3 18 12 6 Less Lots Currently Occupied 4 Dwellings '1 54 `2 12 4 8 "3 6 4 2 2012 Net Total New Trips= 1099 88 27 61 130 86 44 '1 Ln(T)-0 92Ln(X)+2.71 '4 T=6 72(X) '2 T=0.70(X)+9 43(31%enter) '5 T=0.49()<)+3 73(20%enter) '3 Ln(T)=0.90Ln(X)+0.53(66%enter) -6 T=0 55(4+17 65(65%enter) Trip Distribution The attached Figure 3 presents the calculated trip distribution that would be associated with full development of Phase 3 lots. The percentages were calculated using both the Analogy Method, which relies on the directional distribution of traffic from existing residential properties to predict the directional patterns of new residential developments, and the area of influence method, which relies on shortest travel times to surrounding attractions. These distribution percentages are somewhat different than the 2007 TIS percentages. However, none of the distributions varied by more than 3%. Traffic Assignment Attached Figure 4 shows the site generated traffic assignment based upon the full development of Phase 4. Average weekday site traffic and peak PM hour traffic volumes at site accesses and key intersections are shown. The traffic volumes indicated in Figure 4 were calculated based upon total trip generation and directional distribution percentages. The traffic assignment associated with peak pm hour turning movement volumes were calculated by applying directional distribution percentage to each of the five subdivision accesses individually and calculating relative travel times to and from interior streets. The turning movement volumes resulting at each intersection were totaled to provide the overall traffic flows indicated in Figure 4. It was determined that the highest volume accesses would be Caspian Avenue on Baxter Lane and Vaquero Parkway on Davis Lane Traffic Volume Impacts Attached Figure 5 shows the addition of Phase 4 generated traffic to existing 2012 traffic volumes along and Davis Lane. Also included in Figure 5 are the relative percentage ADT increases that would occur on each street segment. 3 Baxter Meadows Phase 4—2012 TIS Update Z7'1:�r . MARVIN & ASSOCIATES 1300 N Transtech Way Billings.MT 59102 The largest increase would be 9% on Ferguson Avenue and 8% on Davis Lane south of Vaquero Parkway. None of the streets would experience significant (>10%) traffic volume increases on the average weekday. The only increases that could be considered significant are those related to peak pm hour traffic, where the addition of even a minor volume of traffic could degrade the intersections level-of-service (LOS). Capacity Impacts By inspection, it was determined that there would only be three intersections having any potential for substantial impacts: Baxter Lane and Flanders Mill Road, Baxter Lane and Davis Lane, and Oak Street and Davis Lane. Existing (2012) and Existing plus site peak PM hour traffic volumes were used to calculate the relative capacity impacts that would be associated with the development of Phase 4 properties. The attached Appendix contains capacity calculations that were completed using HCS 2010 software. The table below indicates that the addition of site generated traffic would have little if any impact on the level of service (LOS) at the Flanders Mill Road intersection with Baxter Lane, but would have measurable impacts at the intersection of Baxter Lane and Davis Lane and Oak Street and Davis Lane. The northbound and southbound approaches on Davis Lane at Baxter Lane would have substantial increases in control delay and the northbound left-turn movement would go from LOS "D" to "E". At the Oak and Davis intersection the LOS on the southbound approach would go from LOS "B" to LOS "C". Capacity Calculation Summary Existing Existing Plus Site Intersection Approaches LOS Delay Queue LOS Delay Queue Flanders Mill & Baxter Lane Westbound A 7.7 0.2 A 7.7 0.2 Northbound B 10.9 0.6 B 11 0.7 Baxter Lane & Davis Lane Eastbound A 7.8 0.1 A 7.9 0.2 Westbound A 7.6 0.1 A 7.7 0.1 Northbound D 26.1 3.7 D 33.7 4.8 Southbound D 27.1 3.9 D 34.3 5.1 Oak Street& Davis Lane Eastbound A 8.4 0.4 A 8.5 0.5 Southbound B 14.5 1 C 15.5 1.3 In addition to capacity of existing intersections, a capacity calculation for the intersection of Vaquero Parkway and Davis Lane was completed since it would have the highest combined volume of entering traffic of the five subdivision 4 Baxter Meadows Phase 4—2012 TIS Update Z=U�' MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 access streets. The calculation (see Appendix) indicates that all approaches to that intersection would operate a LOS "A" with 2012 plus site traffic. Impact Mitigation The reduced LOS at the intersection of Baxter Lane and Davis Lane would need to be mitigated prior to full development of the Baxter Meadows Phases 3 and 4 Subdivision. The initial mitigation measure tested was a change in traffic control from a two-way stop condition to an All-way stop control measure. The attached report Appendix contains the HCS calculations that indicate All-way stop control would accommodate existing plus Phases 3 and 4 site generated traffic volumes with all approach legs and all movements operating at LOS "B" or better. Thus, the initial measure would provide satisfactory mitigation of Phases 3 & 4 development impacts at this intersection Conclusions Development of Baxter Meadows Phase 4 property, as proposed, would have substantially fewer trips than was originally proposed in the year 2007. With the trip generation potential detailed in this report, full development of Phase 4 properties would have an impact at the intersection of Baxter Lane and Davis Lane that would require mitigation. A substantial volume of traffic has been utilizing Davis Lane as an alternate route to North 19th Avenue, and street improvements have been made on every approach to the intersection except on the north approach. Prior to future widening of Davis Lane, north of Baxter Lane, and implementation of longer term traffic control measures that will eventually be required at this intersection, All-way stop control should be considered as a mitigating measure to impacts associated with Phase 4 development_ This intersection currently meets all of the MUTCD warrants for All-way stop control and could be implemented in the very near future. Even though the addition of Phase 4 site traffic at the intersection of Oak Street and Davis Lane would not be sufficient to substantially impact the LOS at that intersection, it appears that rate of traffic growth on Oak Street could begin to stress operations in the near future. All other recommendations contained within the original 2007 TIS that are still applicable would remain for future considerations. The updated analysis reconfirms the traffic assignment and resulting conclusion. If additional information or analysis is deemed necessary, feel free to contact me at any time. Sincerely, Robert R. Marvin, P.E., P.T.O.E 5 Baxter Meadows Phase 4—2012 TIS Update MARVIN &ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 REPORT FIGURES Baxter Meadows Phase 4—2012 TIS Update t •oAV 416L 'N •9AV 416L 'N r � a� J L X m O /1� 'anV 41LZ 'N 'aAV 41LZ 'N a c O o .� a V a as puolloH a MON V a O V fl _ auol SIAoQ •U1 SIAo4 .yti,....-��•�� �' crm IA L J' 0 .Im 4 LL IA 1 a aAV uosn6.Ia:j �� = S aAV uosn6aa:i IL 3 L O a M m a s pooh ll!W SaapuolA JV Z y a 'p2i 4ja3l3nd iadiDH W 0 N •9AV 4}LZ 'N •aAV 4}LZ 'N a y � o d L N Q W X 0o V� J a M n C _ m O J s Z N O %SOB-[00£bI0S8 ou-[o0£blo •� --- _ —� - auq, SIAUQ Q •ul s,Aga \ I o � O `u o � I an olds , � N � � a o p „ s � N M O. L idw�d o�anboA fw lie v• L G O N %000s-[oo9lo0� n " N aAd uosnBAad �- a 1 aAtF uosnfaaj a t� Le. N N pond 111W saapua1A VI %SZ-IOOSLIOOZL p tn O Or1/1 I � C� (A�/nI CInI� 4)"y� V V X O a N l %s -lo SSlooti m 711 c 'Pa 119313nd iadiDH I ! 11 N 'aAV 44LZ 'N •anti 44LZ 'N r � i a �L �i L 0 4 Ln C, G� f- m .� a 0 I ' aunI SIAaa N 'U1 SIAD(3 Mf PM N l lr ±ftin In 4-1 in aAV uosn6.Ia j -0a m q aAd uosnBia: 0 M i POOH II!W S.IapunId L6 c oHh L ♦I n a m -pH 449ii3nd .Iad.iDH l I M W �Io Q Z 1 OC •aAd 44LZ 'N •aAV 4lLZ 'N a o. O rs do tn 00 00 F a co cy (V P _ csI ouo SIAUQ •u-1 SIAaa `_ �•_ zsg� Ln Vf a : � ; 4 a o.s.b.„= �,v of l O aAd uosnf.Iaj a 4 aAd uosnB is j a o o } x c€ ra V V �Q 99 co p paob IIiW s.IapuDIA Ri � n J W K _J l i L -zz m ��•pb 44a3i3nd .iad jDH ail M L—J W a V Q �u � w• Z Q *OAV 4}LZ 'N •an — — b� 4}LZ 'N O 0 d N O a N Ot 0• /r✓ � v7 N '� ct N P I%b100SbMIME - . . �_ auaI shad •ul shad _ L N %81059b A' II II' t e u M O Ln N (V $ �+ WElmo b,A Q O 0 N a N vi 1%61099 anV uosn6.Laj 4 m ant/ uosnB ia:j •� a c o } J ��l ryr X o 4, W j W u9 11 N P h, M N �Q 'n [%b]0LS L C4 .0 _ P 00 poo21 II!W saapunIJ � 00 PN = J • o L J nrrh L O .O x 00 a W A, I%S1SLS •pb 44a>13nd tad wH P LL O M N r- Lr� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 APPENDIX TRAFFIC VOLUME SUMMARIES Baxter Meadows Phase 4—2012 TIS Update e o 0 0 0 0 0 0 o 0 0 0 0 0 0 0 0 0 0 o O 0 O N O y N N N N (O M M N N N O4 M (n N 0 lLOV h 0 (0( M C7 O e y O O O O O N 11: . 10 O 10 O Cl) M M CO M N O O O Mimi o Mi a d m �� m Y O O t` M (O t M O � V M r M M N M (O V M M m (A N O V N N M M f` O O (n (n 0 1� V N n- Cl) 0) M '7 N N N N N CoN A M N U) Q y O C C _ O N O 0" r c rn N I � O - O o0 (A N IT N IT (Mr) r a t6 p m �- = = , N OCM V N N NNN N O N �1 m N N (0 (n CO CO N (O O CF) 01 'Q Q CO a I c N O co n O r 0 0 � M N I� O a0 (O O C:) CDV CD <0 0) ter.. M = I M (y N Mq N N N M N N � It N 00 f� O N a ; N 0 0 0 0 0 0 0 N O O O O O O O O O m m O N O M 7 (O (O O 0) CD (�O N n co �Lo M a (,.1H N Mt Cl) N lmv% O a o 0 0 0 0 0 0 o O o 0 0 0 O o 0 0 0 0 0 o CD • N O M M N -7 V ((7 W (`') - W - (O V O 01 n h N V CA N I- 'IT. C; ■ N e j O O O O O U-) 0) V qr LO CO (O (O �R W �2 (D V N O O O m N Q N � O C� d m (gyp Y C:) O (0 (n N I` r- O co C) C) O N r O ^ 0 0 (0 (� d d co (0 ([) V M co O C) M (0 (,) ((7 U-) LO ((> O (n V N � M io > m N a- �-- •-- N N N N Q U) v O C N 0 �Q N C 3 O Y O N O r (n V N (O �t Ntm co N (p 3 am m o a O q n N ,a 0 (0 I-- O O U) O (O N O M V V V V O m O = I v M 3 (O u") N M 00 coN N O O (n M (0 N N N N M COM N Cl) 3 .-- .- .-- I M O 1 N J r � N N 0 0 0 0 0 0 0 O O O O O O O •� N N O O M N 00 U� O N COj H N N N h V N M 0 1MN% U) W o ° 0000000 � 0000000000000000 ;0 Y N Cl! M 01 M N M (T O CO CO co (0 cor 1- co 'Q a) n- ") o y O O O O O M 6 (O LO (O (O (n L6 CO (n f- LO N N r- O O O O N � o J L m M m (0 N a0 U) CO N O (0 (C) (0 cO LOK d M C) to m O (17 N CO N LA n a N O M = 7 0 �Q N Co M V M --- CD CO N C\l O O L m N U) m M A m W N L r 7 m H N (A N (0 N r { - M (O - - r M O N M O � N N M U-) I- (O CO N C) � N M N (0 (A (0 M V V M N O O M N �- - - - n- ,- - - � N M N o 0 0 0 0 0 0 0 O O O O O O O O O O 7 � m 1- O co O m 0 V N O g lmv% .. M CO W r0- CDN CM � +�+ p N M N l0 h W CDN N N N N O xmill Marvin&Associates Davis Lane North of Baxter Lane Both Directions Hour 10/30/2012 10/31/2012 11/1/2012 Average % of Begin Tues. Wed. Thurs. Weekday Weekda 1 8 12 10 0.2% 2 3 6 5 0.1% 3 14 19 17 0.4% 4 15 15 15 0.3% 5 39 41 40 0.9% 6 87 91 89 2.1% I7 248 246 247 5.7% 8 238 287 263 6.1% 9 187 206 197 4.5% 10 225 247 236 5.4% 11 284 266 275 6.3% 12 275 284 280 6.4% 13 266 296 281 6.5% 14 295 273 284 6.6% 15 336 391 364 8.4% 16 421 422 422 9.7% 17 450 468 459 10.6% 18 326 285 306 7.0% 19 203 196 200 4.6% 20 146 150 148 3.4% 21 73 108 91 2.1% 22 50 68 59 1.4% 23 26 37 32 0.7% 24 14 25 20 0.4% Total 2340 4312 2016 4334 100.0% Hourly Variations 12.0% 10.0% 8.0% - Q 6.0% 4.0% rt'� 2 0% 0.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Begin Hour Marvin&Associates Oak Street West of Davis Lane Both Directions Hour 10/30/2012 10/31/2012 11/1/2012 Average % of Begin Tues. Wed. Thurs. Weekday Weekday 1 12 17 15 0.2% 2 4 12 8 0.1% 3 8 11 10 0.1% 4 23 27 25 0.4% 5 65 75 70 1.0% 6 181 164 173 2.5% 7 471 433 452 6.5% 8 429 471 450 6.4% 9 317 369 343 4.9% 10 359 374 367 5.3% 11 467 462 465 6.7% 12 497 492 495 7.1% 13 449 463 456 6.5% 14 489 479 484 6.9% 15 615 588 602 8.6% 16 675 636 656 9.4% 17 730 689 710 10.2% 18 470 419 445 6.4% 19 288 300 294 4.2% 20 209 222 216 3.1% 21 129 130 130 1.9% 22 53 70 62 0.9% 23 30 40 35 0.5% 24 24 19 22 0.3% Total 3712 6874 3370 6978 100.0% Hourly Variations 12 0% 10.0% 8.0% 0 4 0% - - - - - 2.0% 0.0% a- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Begin Hour AWLr� MARVIN & ASSOCIATES 1300 N.Transtech Way Billings,MT 59102 APPENDIX CAPACITY CALCULATIONS Baxter Meadows Phase 4—2012 TIS Update Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Baxter&Flanders Mill Agency/Co. Marvin&Assoc Jurisdiction Bozeman Date Performed 111127112 Analysis Year Existing 2012 Analysis Time Period Peak PM Project Description East/West Street: Baxter Lane North/South Street: Flanders Mill Road Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R volume veh/h 91 28 75 93 Peak-Hour Factor, PHF 1.00 0.80 0.80 0.81 0.81 1.00 Hourly Flow Rate, HFR 0 113 34 92 114 0 (veh/h) Percent Heavy Vehicles 0 - - 0 - Median Type Undivided RT Channelized 0 0 (Lanes 0 1 0 0 1 0 Configuration TR LT Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R 'Volume(veh/h) 38 60 Peak-Hour Factor, PHF 0.78 1.00 0.78 1.00 1.00 1.00 Hourly Flow Rate, HFR 48 0 76 0 0 0 (veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Dela , Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR v (veh/h) 92 124 C (m) (veh/h) 1447 733 v/c 0.06 0.17 95%queue length 0.20 0.61 Control Delay(s/veh) 7.7 10.9 LOS A B Approach Delay(s/veh) - 10.9 Approach LOS -- B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/28/2012 5:24 PM file:///C:[Users/Bob/AppData/Local/Temp/u2kE27E.tmp 11/28/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst R Marvin Intersection Baxter&Davis Existing Agency/Co. Marvin&Associates Jurisdiction Cit y of Bozeman Date Performed 1112412012 Analysis Year 2012 Analysis Time Period Peak PM Hour Project Description Baxter Sub. Phase 3 Update East/West Street: Baxter Lane North/South Street: Davis lane Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 'veh/h 47 711 25 40 148 62 Peak-Hour Factor, PHF 0.78 0.78 0.78 0.85 0.85 0.85 Hourly Flow Rate, HFR 60 142 32 47 174 72 (veh/h) Percent Heavy Vehicles 0 1 0 - -- Median Type Two Way Left Turn Lane RT Channelized 0 0 Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume (veh/h) 25 140 45 15 145 35 Peak-Hour Factor, PHF 0.82 0.82 0.82 0.80 0.80 0.80 Hourly Flow Rate, HFR 30 170 54 18 181 43 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 1 0 1 0 Configuration LT R LTR Delay, Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L L LT R LTR v(veh/h) 60 47 200 54 242 C(m)(veh/h) 1332 1415 334 893 1 398 v/c 0.05 0.03 0.60 0.06 0.61 95%queue length 0.14 0.10 3.67 0.19 3.88 Control Delay(s/veh) 7.8 7.6 30.6 9.3 27.1 LOS A A D A D Approach Delay(s/veh) -- 26.1 27.1 Approach LOS -- D D Copyright©2010 University of Florida,All Rights Reserved HCS+TM version 5.6 Generated: 11/24/2012 3:50 PM file:///C:/Jsers/Bob/AppData/Local/Temp/u2k5D4A.tmp 11/24/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst R Marvin Intersection Oak and Davis Agency/Co. Marvin &Associates Jurisdiction Bozeman Date Performed 1112112012 Analysis Year 2012 Existing ,Analysis Time Period Peak PM Project Description Baxter Meadows Phase 4 East/West Street: Oak Street North/South Street: Davis Lane Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 130 190 255 80 Peak-Hour Factor, PHF 0.92 0.92 1.00 1.00 0.92 0.92 (Hourly Flow Rate, HFR 141 206 0 0 277 86 (veh/h) Percent Heavy Vehicles 0 1 0 - Median Type Undivided RT Channelized 0 0 Lanes 1 0 1 0 0 1 0 Configuration LT TR U stream Si nal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume veh/h) 75 135 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.92 1.00 0.92 Hourly Flow Rate, HFR 0 0 0 81 0 146 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 1 0 1 Configuration L R Dela ,Queue Length,and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT L R v(veh/h) 141 81 146 C(m)(veh/h) 1207 1 312 725 V/c 0.12 0.26 0.20 95% queue length 0.40 1.02 0.75 Control Delay(s/veh) 8.4 20.5 11.2 LOS A C I B Approach Delay(s/veh) - 14.5 Approach LOS B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/24/2012 3:40 PM file:///C:/TJsers/Bob/AppData/Local/Temp/u2kE483.tmp 11/24/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Baxter&Flanders Mill Agency/Co. IMarvin&Assoc Jurisdiction Bozeman Date Performed 11127112 Analysis Year Exist 2012 Plus Site Traffic Analysis Time Period IPeak PM Project Description Baxter Meadows Phase 4 Update East/West Street: Baxter Lane North/South Street: Flanders Mill Road Intersection Orientation: East-West IStudy Period hrs): 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h) 96 28 78 95 Peak-Hour Factor, PHF 1.00 0.80 0.80 0.81 0.81 1.00 Hourly Flow Rate, HFR 0 119 34 96 117 0 veh/h) Percent Heavy Vehicles 0 -- - 0 -- -- Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration TR LT Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume(veh/h) 38 65 Peak-Hour Factor, PHF 0.78 1.00 0.78 1.00 1.00 1.00 (Hourly Flow Rate, HFR 48 0 83 0 0 0 (veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 IRT Channelized 0 0 Lanes 0 0 0 0 0 0 Confi uration LR Dela ,Queue Length,and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR v(veh/h) 96 131 C (m)(veh/h) 1440 728 V/C 0.07 0.18 95%queue length 0.21 0.65 Control Delay(s/veh) 7.7 11.0 LOS A B ,Approach Delay(s/veh) 11.0 Approach LOS — - B Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:38 PM file:///C:[Users/Bob/AppData/Local/Temp/u2kD549.tmp 11/27/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Baxter&Davis Agency/Co. IMarvin&Associates Jurisdiction City of Bozeman Date Performed 11112712012 Analysis Year 2012 Exist Plue Site Traffic Analysis Time Period Peak PM Hour Project Description Baxter Sub. Phase 3 Update East/West Street: Baxter Lane North/South Street: Davis lane Intersection Orientation: East-West IStudy Period hrs): 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume(veh/h) 52 119 29 46 164 62 Peak-Hour Factor, PHF 0.78 0.78 0.78 0.85 0.85 0.85 Hourly Flow Rate, HFR 66 152 37 54 192 72 veh/h) Percent Heavy Vehicles 0 - -- 0 - -- Median Type Two Way Left Turn Lane RT Channelized 0 0 Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R 'Volume(veh/h) 27 142 48 15 149 46 Peak-Hour Factor, PHF 0.82 0.82 0.82 0.80 0.80 0.80 Hourly Flow Rate, HFR 32 173 58 18 186 57 (veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 1 0 1 0 Configuration LT R LTR Delay,Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L L LT R LTR v(veh/h) 66 54 205 58 261 C(m)(veh/h) 1312 1397 296 879 373 V/c 0.05 0.04 0-69 0.07 0.70 95%queue length 0.16 0.12 4.76 0.21 5.12 Control Delay(s/veh) 7.9 7.7 40.6 9.4 34.3 LOS A A E A D Approach Delay(s/veh) - 33.7 34.3 Approach LOS -- D D Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/28/2012 5:26 PM file:///C:/Users/Bob/AppData/Local/Temp/u2k5F 1 C.tmp 11/28/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst IR Marvin Intersection Oak and Davis Agency/Co. IMarvin&Associates Jurisdiction Bozeman Date Performed 11112712012 Analysis Year 2012 Exist Plus Site Traffic Analysis Time Period IPeak PM Project Description Baxter Meadows Phase 4 East/West Street: Oak Street North/South Street: Davis Lane Intersection Orientation: East-West IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Eastbound Westbound Movement 1 2 3 E40 5 6 L T R T R Volume veh/h) 143 190 255 96 Peak-Hour Factor, PHF 0.92 0.92 1.00 0.92 0.92 Hourly Flow Rate, HFR 155 206 0 0 277 104 veh/h) Percent Heavy Vehicles 0 1 0 -- -- Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LT TR U stream Si nal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume(veh/h) 82 142 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.92 1.00 0.92 Hourly Flow Rate, HFR 0 0 0 89 0 154 veh/h) Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 1 0 1 Configuration L R Dela ,Queue Length, and Level of Service Approach Eastbound Westbound Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT L R v(veh/h) 155 89 154 C(m)(veh/h) 1189 292 717 v/c 0.13 0.30 0.21 95%queue length 0.45 1.25 0.81 Control Delay(s/veh) 8.5 22.6 11.4 LOS A C B Approach Delay(s/veh) -- -- 15.5 Approach LOS -- -- C Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:34 PM file:///C:/Users/Bob/AppData/Local/Temp/u2kBBDO.tmp 11/27/2012 All-Way Stop Control Page 1 of 1 ALL-WAY STOP CONTROL ANALYSIS General Information Site Information Analyst IR Marvin 'Intersection Baxter&Davis Agency/Co Marvin&Assoc Jurisdiction 18ozeman Date Performed 11/27/2012 Analysis Year 2012 Exist Plus Phase 3&4 nal s,s Time Period Peak PM Pro ect ID Baxter Meadows Phase 4 Update East/West Street: Baxter Lane (North/South Street: Davis Lane Volume Adjustments and Site Characteristics Approach Eastbound Westbound Movement L T R L T R Volume(veh/h) 59 140 34 46 199 62 %Thrus Left Lane Approach Northbound Southbound Movement L T R L T R Volume(veh/h) 35 128 39 15 119 55 %Thrus Left Lane Eastbound Westbound Northbound Southbound L1 L2 L1 L2 L1 L2 L1 L2 Configuration L TR L TR LT R LTR PHF 0.75 0.75 0.80 0.80 0.78 0.78 0.79 Flow Rate(veh/h) 78 231 57 325 208 50 237 "/o Heavy Vehicles 0 0 0 0 0 0 0 No.Lanes 2 2 2 1 Geometry Group 5 5 5 4b Duration,T 0.25 Saturation Headway Adjustment Worksheet Prop.Left-Turns 1.0 0.0 1.0 0.0 0.2 0.0 0.1 Prop.Right-Turns 0.0 0.2 0.0 0.2 0.0 1.0 0.3 Prop.Heavy Vehicle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 hLT-adj 0.5 0.5 0.5 0.5 0.5 0.5 0.2 0.2 hRT-adj 1 -0.7 1 -0.7 1 -0.7 -0.7 -0.7 1 -0.7 1 -0.6 1 -0.6 hHV-adj 1.7 1.7 1.7 1.7 1.7 1 1.7 1 1.7 1 1.7 hadj,computed 0.5 -0.1 0.5 1 -0.2_1 0.1 1 -0.7 -0.2 be arture Headway and Service Time lid,initial value(s) 3.20 3.20 3.20 3.20 3.20 3.20 3.20 x,initial 0.07 0.21 0.05 0.29 0.18 0.04 0.21 hd,final value(s) 7.46 6.82 7.32 6.65 7.26 6.44 6.94 x,final value 0.16 0.44 0.12 0.60 0.42 0.09 0.46 Move-up time,m(s) 2.3 2.3 2.3 2.3 service Time,is(s) 5.2 4.5 5.0 4.3 5.0 4.1 4.6 licapacity and Level of Service Eastbound Westbound Northbound Southbound L1 L2 L1 L2 L1 L2 L1 L2 Capacity(veh/h) 328 481 307 521 458 300 485 Delay(s/veh) 11.60 14.71 10.98 18.81 15.09 9.77 15.34 LOS B B B C C A C Approach:Delay(s/veh) 13.92 17.64 14.06 15.34 LOS B C B C Intersection Delay(s/veh) 15.43 Intersection LOS C Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5.6 Generated: 11/27/2012 4:52 PM file:///C:/TJsers/Bob/AppData/Local/Temp/u2k72EE.tmp 11/27/2012 Two-Way Stop Control Page 1 of 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information .Analyst IR Marvin Intersection 'Vaquero&Davis encv/Co. IMarWin&Associates Jurisdiction Bozeman Date Performed 11112712012 Analysis Year 2012 Exist Analysis Time Period Peak PM Hour Project Description Baxter Meadow Phase 4 Update East/West Street: Vaquero Way North/South Street: Davis Lane Intersection Orientation: North-South IStudy Period hrs : 0.25 Vehicle Volumes and Adjustments Major Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume veh/h 21 218 215 3 Peak-Hour Factor. PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 23 242 0 0 238 3 (veh/h) Percent Heavy Vehicles 0 0 - -- Median Type Raised curb RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT T T TR Upstream Signal 0 0 Minor Street Eastbound Westbound Movement 7 8 9 10 11 12 L T R L T R Volume veh/h 2 9 Peak-Hour Factor, PHF 0.50 1.00 0.50 1.00 1.00 1.00 Hourly Flow Rate, HFR 4 0 18 0 0 0 veh/h Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade(%) 0 0 (Flared Approach y N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Dela , Queue Length,and Level of Service Approach Northbound Southbound Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR v(veh/h) 23 22 C(m) (veh/h) 1337 879 v/c 0.02 0.03 95% queue length 0.05 0.08 Control Delay(s/veh) 7.7 9.2 LOS A A Approach Delay(s/veh) 9.2 Approach LOS A Copyright©2010 University of Florida,All Rights Reserved HCS+TM Version 5 6 Generated: 11/27/2012 4:44 PM file:///C:/TJsers/Bob/AppData/Local/Temp/u2k8DDE.tmp 11/27/2012