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Home My WebLink About026_Appendix Y - 19th & Arnold Signal Warrant Analysis March 19, 2026 Taylor Lonsdale, PE City of Bozeman 20 East Olive Street Bozeman, MT 59715 Reference: Traffic Signal Warrant Analysis – Arnold St/S 19th Ave, Bozeman, MT Project No. 260140 Dear Taylor: The purpose of this letter is to provide a comprehensive traffic signal warrant study for the intersection of South 19th Avenue and Arnold Street in Bozeman, MT, assuming full buildout of Arnold Street between South 19th Avenue and South 11th Avenue. The intent of this assessment is to satisfy the requirements of the City of Bozeman and provide guidance on the necessity of a traffic signal or other traffic control and potential access restrictions at this intersection. The Arnold Street/South 19th Avenue intersection is currently stop controlled on the eastbound approach with a northbound left-turn lane and a 20-foot striped center median on the north leg. There are marked bike lanes along both directions of South 19th Avenue with sidewalk along both roadways. Arnold Street is currently disconnected between South 19th Avenue and South 11th Avenue. It is assumed that Arnold Street will be constructed to fill this gap concurrent with construction of Phase 3 Block 3 of the South University District (SUD). Current development timelines project that this will occur within five years. Along with Block 3 of SUD, Blocks 1, 2, and 4 are also expected to be developed within a similar timeline. Additionally, other plans for this area of Bozeman include the full buildout of Jarrett Subdivision and Allison Subdivision Phase 4. Figure 1 on page two outlines the boundaries of the planned developments considered for this study and the anticipated connection of Arnold Street. Existing Conditions Traffic data was collected at the Arnold Street/South 19th Avenue intersection on Tuesday, February 24, 2026, using Miovision Scout video-based systems. The weekday AM and PM peak hour periods were found to occur from 7:45 to 8:45 AM and 5:00 to 6:00 PM, respectively. Figure 1 summarizes the calculated Existing Conditions (2026) peak hour turning-movement volumes for both peak periods. Detailed traffic count data worksheets are included in Attachment A. Mr. Taylor Lonsdale March 19, 2026 Page 2 Figure 1: Existing Conditions (2026) Volumes and Future (2031) Volume Projections Mr. Taylor Lonsdale March 19, 2026 Page 3 Intersection capacity calculations for Existing Conditions (2026) were performed for the study area intersections using PTV Vistro 2023 software, which is based on the Highway Capacity Manual, 7th Edition (Transportation Research Board, 2022). Level of service (LOS) is defined as a quality measure describing operational conditions within a traffic stream, generally in terms of such service measures as speed, travel time, freedom to maneuver, traffic interruptions, comfort, and convenience. LOS is a qualitative measure of the performance of an intersection with values ranging from LOS A, indicating good operation and low vehicle delays, to LOS F, which indicates congestion and longer vehicle delays. The City of Bozeman Unified Development Code (UDC) Section 38.400.060.3 specifies that LOS D represents the minimum acceptable LOS for intersections. The Existing Conditions (2026) intersection capacity calculations showed that the South 19th Avenue/Arnold Street intersection currently operates at LOS D on the eastbound approach in the AM peak hour, with a delay value only 0.6 seconds above the LOS C threshold. Calculated eastbound 95th-percentile queues reach two vehicles during the AM peak hour. During the PM peak hour, the eastbound approach operates at LOS C. Figure 1 also shows the Existing Conditions (2026) LOS results at each intersection. Table 1 below provides a detailed capacity summary table, and capacity calculation worksheets can be found in Attachment B. Future Projections Future traffic projections at the Arnold Street/South 19th Avenue intersection, including the new westbound approach, were developed for the five-year horizon by combining trip assignments for the adjacent planned developments with the Existing Conditions (2026) volumes. A yearly background growth rate of 1.5 percent was applied to existing volumes based on adjacent MDT historical traffic count data and the prior approved SUD traffic studies. Table 2: Existing Conditions (2026) Capacity Calculations Summary Avg Delay (s/veh)LOS 95th % Queue (veh) Avg Delay (s/veh)LOS 95th % Queue (veh) NB 0.0 A 1 0.0 A 0 SB 0.0 A 0 0.0 A 0 EB 25.6 D 2 21.1 C 1 Intersection 1.2 A --0.6 A -- One-Way Stop-Control (EB)Intersection Control S 19th Ave & Arnold St Intersection Approach Existing (2026) AM Peak PM Peak Mr. Taylor Lonsdale March 19, 2026 Page 4 For the purposes of this analysis, it was assumed that Blocks 1-4 of the SUD development, the Jarrett Subdivision, and Allison Subdivision Phase 4 would be constructed within a five-year horizon. Trips associated with the proposed South Range Crossing II Subdivision, located southeast of the Arnold Street/South 19th Avenue intersection, were excluded from this analysis as the first phase of that development is not anticipated to connect to Arnold Street within the five-year horizon timeline. Vehicle movements from existing residential areas adjacent to Arnold Street were re- routed due to the proposed Arnold Street extension. The re-routed volumes were estimated using the same access distribution assumptions applied to the SUD future development, specifically the percentage of trips anticipated to use the proposed Arnold Street connection. The Morning Star Elementary School district boundary is east of South 19th Avenue and therefore school trips are not expected to alter their travel patterns due to the extension of Arnold Street. Figure 1 on page two illustrates the resulting AM and PM Future (2031) traffic volume projections. Future Operations Analysis A Future (2031) capacity analysis was completed for the Arnold Street/South 19th Avenue intersection assuming two-way stop control on the minor approaches and full access with the westbound approach constructed. The results show that the eastbound approach is projected to operate at LOS E during both peak hours, with 95th-percentile queues remaining minimal. The increase in vehicle delay for the eastbound approach is primarily attributed to the higher proportion of left-turning vehicles on that approach, which conflict with South 19th Avenue thru movements during both peak hours. Inversely, the westbound approach is expected to serve primarily right-turning movements which experience limited delay. The westbound and other remaining approaches are projected to operate at LOS C or better, with the intersection overall projected to operate at LOS A. Figure 1 also illustrates the Future (2031) LOS results. Table 2 on the following page provides a detailed intersection capacity summary table, and capacity calculation worksheets for the Future (2031) traffic projections scenario can be found in Attachment C. Mr. Taylor Lonsdale March 19, 2026 Page 5 Traffic Signal Warrant Analysis Traffic signal warrants were evaluated for the Existing Conditions (2026) and Future (2031) scenarios using criteria outlined in the Manual on Uniform Traffic Control Devices (MUTCD) 11th Edition (2023). The MUTCD presents several warrants that can be considered based on traffic volumes, school crossings, crash history, and others. For the purposes of this analysis, Warrants 5 (School Crossing) and 9 (Intersection Near a Grade Crossing) were not evaluated because the intersection is not adjacent to a school or a grade crossing. Morning Star Elementary School is located less than one mile east of the intersection and could generate school-crossing activity in the future; however, this warrant was not included because its conditions are not met at present, it is not the primary reason for considering a signal, and due to the school enrollment boundary it is unlikely students would be crossing South 19th Avenue. Additionally, satisfaction of the Peak Hour Warrant alone should not be considered as warranting a signal, as it is primarily meant for application at office complexes, manufacturing plants, or other high-occupancy vehicle facilities that attract or discharge large numbers of vehicles over a short time. Based on Existing Conditions (2026) and projected Future (2031) volumes, no traffic signal warrants are projected to be met. Minor-approach volumes are projected to remain below MUTCD thresholds, while major-approach volumes exceed the thresholds. The existing speed limit of 40 mph on South 19th Avenue was used to determine which criteria to evaluate, although actual 85th-percentile speeds may be higher which could allow application of a 70 percent volume reduction to the warrant criteria. Even with the reduced thresholds, signal warrants are still not projected to be met. No crashes were reported within the five-year period; therefore, the crash history warrant is not met. Table 2: Future (2031) Capacity Calculations Summary Avg Delay (s/veh)LOS 95th % Queue (veh) Avg Delay (s/veh)LOS 95th % Queue (veh) NB 0.0 A 1 0.0 A 0 SB 0.4 A 1 0.6 A 1 EB 38.8 E 2 45.3 E 2 WB 18.7 C 1 14.8 B 1 Intersection 2.6 A --2.0 A -- S 19th Ave & Arnold St Intersection Control Two-Way Stop-Control (EB/WB) Intersection Approach Future (2031) AM Peak PM Peak Mr. Taylor Lonsdale March 19, 2026 Page 6 Once the Arnold Street connection is constructed and as adjacent developments are constructed and occupied, it is recommended that volumes at this intersection are monitored to review if the future realized volumes do warrant a signal. Traffic signal warrant worksheets can be found in Attachment D. Improved Intersection Capacity Future (2031) intersection capacity calculations were evaluated at the Arnold Street/South 19th Avenue intersection with potential mitigation improvements. Restricting egress left-turn movements from the minor approaches, while maintaining two-way stop control, was found to improve operations on both minor approaches to LOS A/B during both peak hours. With this restriction, eastbound left- turning movements would likely re-route to Stucky Road while westbound left- turning movements would likely re-route to either Stucky Road or Graf Street. Signalization with a basic two-phase timing plan was also evaluated and is projected to improve operations to LOS C or better on all approaches during both peak hours, with minimal to moderate 95th-percentile queues. Capacity calculation worksheets for the Future with Improvements (2031) scenario are included in Attachment E. Conclusions and Recommendations Based on the analysis conducted for Existing Conditions (2026) and Future (2031) volumes, a traffic signal at the Arnold Street/South 19th Avenue intersection is neither currently warranted nor projected to be warranted by 2031, assuming full construction and occupancy of the developments listed previously. While future growth will introduce additional demand, minor-approach volumes and operational performance are projected to remain below MUTCD signal warrant thresholds, even under reduced volume threshold criteria. Projected future operations also do not fall below accepted LOS thresholds outlined in the Bozeman UDC. Continued monitoring of traffic growth and operational performance is recommended to ensure that future conditions remain acceptable and that appropriate mitigation measures are implemented if and when they become warranted. Consideration could also be given to restricting egress left-turn movements from the minor approaches at the Arnold Street/South 19th Avenue intersection if the projected future operational results are deemed to be unsatisfactory by the City of Bozeman. Mr. Taylor Lonsdale March 19, 2026 Page 7 If a traffic signal is not installed at this location, then an R1-1 (Stop) sign should be installed on the new westbound Arnold Street approach. These measures aim to reduce vehicle delays and improve overall safety. All transportation related improvements shall be designed in accordance with City of Bozeman and/or MDT standards and the MUTCD. If you have any questions or concerns, please feel free to contact me at 406.992.4326 or astoltzfus@sanbell.com Sincerely, Audrey Stoltzfus, PE, RSP2I Project Engineer SJW/ars/pjf/SG Enc. Attachment A. Traffic Count Data Worksheets Attachment B. Capacity Calculations - Existing Conditions (2026) Attachment C. Capacity Calculations - Future (2031) Attachment D. Signal Warrant Worksheets Attachment E. Capacity Calculations – Future Improved (2031) P:260140_19th_&_Arnold_Signal_Warrant_Study_3.19.2026 TRAFFIC COUNT DATA WORKSHEETS ATTACHMENT A Intersection: Jurisdiction: Project Description: Int. Start Time U-Turn Left Thru Right Total U-Turn Left Thru Right Total U-Turn Left Thru Right Total U-Turn Left Thru Right Total Total Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.03 1.03 1.03 1.03 1.03 1.03 1.03 1.03 7:45 AM 0 21 0 0 21 0 0 0 0 0 0 2 206 0 208 0 0 107 3 110 339 8:00 AM 0 12 0 1 13 0 0 0 0 0 0 1 271 0 272 0 0 109 0 109 394 8:15 AM 0 8 0 0 8 0 0 0 0 0 0 1 192 0 193 0 0 93 4 97 298 8:30 AM 0 15 0 0 15 0 0 0 0 0 0 0 151 0 151 0 0 80 1 81 247 Grand Total 0 56 0 1 57 0 0 0 0 0 0 4 820 0 824 0 0 389 8 397 1,278 Med Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 0.0 0.0 2.1 0.0 2.0 Heavy Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.5 0.0 0.5 Total Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 0.0 1.1 0.0 0.0 2.6 0.0 2.5 Total %0.0 4.4 0.0 0.1 4.5 0.0 0.0 0.0 0.0 0.0 0.0 0.3 64.2 0.0 64.5 0.0 0.0 30.4 0.6 31.1 100.0 PHF 0.68 0.00 0.76 0.90 0.81 RT TH LT U 8 389 0 0 0RT0TH0LT0UU0LT56TH0RT10 4 820 0 U LT TH RT INTERSECTION TURNING MOVEMENT COUNT SUMMARY General Information Counted By: Kole Ketterling S 19th Ave & Arnold St Agency/Company:Sanbell Date Performed:Tuesday, February 24, 2026 City of Bozeman Count Time Period:AM Peak Hour (7:45 AM - 8:45 AM) Project Number: 260140 19th & Arnold Signal Warrant Study North/South Street:S 19th Ave East/West Street:Arnold St Arnold StOut12Vehicle Volumes and Adjustments Arnold St S 19th Ave S 19th Ave Eastbound Westbound Northbound Southbound In570OutS 19th Ave In Out 397 876 S 19th Ave 0InTotal Entering 1,278 390 824 Out In 1300 North Transtech Way | Billings, Montana 59102 | Phone 406.656.5255 | Fax 406.656.0967 | www.sanbell.com Intersection: Jurisdiction: Project Description: Int. Start Time U-Turn Left Thru Right Total U-Turn Left Thru Right Total U-Turn Left Thru Right Total U-Turn Left Thru Right Total Total Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.03 1.03 1.03 1.03 1.03 1.03 1.03 1.03 5:00 PM 0 4 0 3 7 0 0 0 0 0 0 1 114 0 115 0 0 163 14 177 299 5:15 PM 0 9 0 1 10 0 0 0 0 0 0 0 143 0 143 0 0 162 16 178 331 5:30 PM 0 11 0 1 12 0 0 0 0 0 0 0 115 0 115 0 0 147 13 160 287 5:45 PM 0 7 0 0 7 0 0 0 0 0 0 0 91 0 91 0 0 187 20 207 305 Grand Total 0 31 0 5 36 0 0 0 0 0 0 1 463 0 464 0 0 659 63 722 1,222 Med Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.4 0.0 0.0 0.2 0.0 0.1 Heavy Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total Truck %0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.4 0.0 0.0 0.2 0.0 0.1 Total %0.0 2.5 0.0 0.4 2.9 0.0 0.0 0.0 0.0 0.0 0.0 0.1 37.9 0.0 38.0 0.0 0.0 53.9 5.2 59.1 100.0 PHF 0.75 0.00 0.81 0.88 0.92 RT TH LT U 63 659 0 0 0RT0TH0LT0UU0LT31TH0RT50 1 463 0 U LT TH RT INTERSECTION TURNING MOVEMENT COUNT SUMMARY General Information Counted By: Kole Ketterling S 19th Ave & Arnold St Agency/Company:Sanbell Date Performed:Tuesday, February 24, 2026 City of Bozeman Count Time Period:PM Peak Hour (5:00 PM - 6:00 PM) Project Number: 260140 19th & Arnold Signal Warrant Study North/South Street:S 19th Ave East/West Street:Arnold St Arnold StOut64Vehicle Volumes and Adjustments Arnold St S 19th Ave S 19th Ave Eastbound Westbound Northbound Southbound In360OutS 19th Ave In Out 722 494 S 19th Ave 0InTotal Entering 1,222 664 464 Out In 1300 North Transtech Way | Billings, Montana 59102 | Phone 406.656.5255 | Fax 406.656.0967 | www.sanbell.com 1.000HourBeginEBWBEBWBEBWBEBWBEBWBEBWBEBWBEBWBADTEBWBADT0:004646100.7%1.1%0.9%1:00000000.0%0.0%0.0%2:00121230.2%0.4%0.3%3:00101010.2%0.0%0.1%4:00232350.4%0.6%0.5%5:009292111.6%0.4%1.0%6:00274274314.9%0.8%2.9%7:006186186911.0%1.5%6.3%8:0054115411659.7%2.1%6.0%9:0038153815536.8%2.8%4.9%10:0025192519444.5%3.6%4.0%11:0026262626524.7%4.9%4.8%12:0036323632686.5%6.0%6.3%13:0036323632686.5%6.0%6.3%14:0032233223555.8%4.3%5.1%15:0030413041715.4%7.7%6.5%16:0027492749764.9%9.2%7.0%17:0036633663996.5%11.9%9.1%18:0035513551866.3%9.6%7.9%19:0024492449734.3%9.2%6.7%20:0018351835533.2%6.6%4.9%21:0017321732493.1%6.0%4.5%22:0011141114252.0%2.6%2.3%23:00614614201.1%2.6%1.8%TOTAL0000556531000000005565311,087100.0%100.0%100.0%VOLUME COUNT SUMMARYGeneral InformationCounted By:Kole KetterlingCount Location:Arnold Street - W of South 19th AvenueAgency/Company:SanbellDates Performed:2/24/2026Jurisdiction:City of BozemanProject Number:260140Street Classification:LocalProject Description:19th & Arnold Signal Warrant StudySeasonal Count Factor:2/22/20262/23/20262/24/20262/25/20262/26/20262/27/20262/28/2026Annual Average Daily TrafficHourly Percentage of TotalSundayMondayTuesdayWednesdayThursdayFridaySaturday(AADT)(%)020406080100120Hourly AADTTime of DayPercentage of Daily Traffic Volume Per Hour 1.031HourBeginNBSBNBSBNBSBNBSBNBSBNBSBNBSBNBSBADTNBSBADT0:0012221222340.2%0.3%0.3%1:00161670.0%0.1%0.1%2:00511511160.1%0.2%0.1%3:008282100.1%0.0%0.1%4:00418418490.6%0.1%0.4%5:0011119111191301.7%0.3%1.0%6:0022874228743023.5%1.1%2.3%7:005732655732658388.8%4.0%6.4%8:00803361803361116412.3%5.5%8.9%9:004392654392657046.7%4.0%5.4%10:003352853352856205.1%4.3%4.7%11:004343344343347686.7%5.1%5.9%12:003584403584407985.5%6.7%6.1%13:004014534014538546.1%6.9%6.5%14:003974993974998966.1%7.6%6.8%15:0051066951066911797.8%10.1%9.0%16:0043563143563110666.7%9.6%8.1%17:0049672349672312197.6%11.0%9.3%18:003435163435168595.3%7.8%6.5%19:002353662353666013.6%5.5%4.6%20:001673331673335002.6%5.0%3.8%21:0095160951602551.5%2.4%1.9%22:00769876981741.2%1.5%1.3%23:0021602160810.3%0.9%0.6%TOTAL00006,5246,600000000006,5246,60013,124100.0%100.0%100.0%VOLUME COUNT SUMMARYGeneral InformationCounted By:Kole KetterlingCount Location:South 19th Avenue - N of Arnold StreetAgency/Company:SanbellDates Performed:2/24/2026Jurisdiction:City of BozemanProject Number:260140Street Classification:Principal ArterialProject Description:19th & Arnold Signal Warrant StudySeasonal Count Factor:2/22/20262/23/20262/24/20262/25/20262/26/20262/27/20262/28/2026Annual Average Daily TrafficHourly Percentage of TotalSundayMondayTuesdayWednesdayThursdayFridaySaturday(AADT)(%)0200400600800100012001400Hourly AADTTime of DayPercentage of Daily Traffic Volume Per Hour 1.031HourBeginNBSBNBSBNBSBNBSBNBSBNBSBNBSBNBSBADTNBSBADT0:0010181018280.2%0.3%0.2%1:00161670.0%0.1%0.1%2:004949130.1%0.1%0.1%3:00727290.1%0.0%0.1%4:00395395440.7%0.1%0.4%5:0010216102161181.7%0.3%1.0%6:0020070200702703.3%1.1%2.2%7:005142615142617758.6%4.3%6.4%8:00752354752354110612.5%5.8%9.1%9:004012514012516526.7%4.1%5.4%10:003122683122685805.2%4.4%4.8%11:004103104103107206.8%5.1%6.0%12:003264123264127385.4%6.8%6.1%13:003664223664227886.1%6.9%6.5%14:003674783674788456.1%7.8%7.0%15:0048062848062811088.0%10.3%9.2%16:004125864125869986.9%9.6%8.3%17:0046566446566411297.8%10.9%9.3%18:003074633074637705.1%7.6%6.4%19:002123182123185303.5%5.2%4.4%20:001523001523004522.5%4.9%3.7%21:0077127771272041.3%2.1%1.7%22:00658465841491.1%1.4%1.2%23:0016471647630.3%0.8%0.5%TOTAL00005,9976,099000000005,9976,09912,096100.0%100.0%100.0%VOLUME COUNT SUMMARYGeneral InformationCounted By:Kole KetterlingCount Location:South 19th Avenue - S of Arnold StreetAgency/Company:SanbellDates Performed:2/24/2026Jurisdiction:City of BozemanProject Number:260140Street Classification:Principal ArterialProject Description:19th & Arnold Signal Warrant StudySeasonal Count Factor:2/22/20262/23/20262/24/20262/25/20262/26/20262/27/20262/28/2026Annual Average Daily TrafficHourly Percentage of TotalSundayMondayTuesdayWednesdayThursdayFridaySaturday(AADT)(%)020040060080010001200Hourly AADTTime of DayPercentage of Daily Traffic Volume Per Hour CAPACITY CALCULATIONS – EXISTING CONDITIONS (2026) ATTACHMENT B Avg Delay (s/veh) LOS 95th % Queue (veh) Avg Delay (s/veh) LOS 95th % Queue (veh) NB 0.0 A 1 0.0 A 0 SB 0.0 A 0 0.0 A 0 EB 25.6 D 2 21.1 C 1 Intersection 1.2 A --0.6 A -- One-Way Stop-Control (EB)Intersection Control S 19th Ave & Arnold St Intersection Approach Existing (2026) AM Peak PM Peak 0.285Volume to Capacity (v/c): DLevel Of Service: 25.7Delay (sec / veh): 15 minutesAnalysis Period: HCM 7th EditionAnalysis Method: Two-way stopControl Type: Intersection 1: S 19th Ave & Arnold St Intersection Level Of Service Report NoNoNoCrosswalk 0.000.000.00Grade [%] 25.0040.0040.00Speed [mph] 0.000.000.000.000.000.00Exit Pocket Length [ft] 000000No. of Lanes in Exit Pocket 100.00100.00100.00100.00100.00400.00Entry Pocket Length [ft] 000001No. of Lanes in Entry Pocket 12.0012.0012.0012.0012.0012.00Lane Width [ft] RightLeftRightThruThruLeftTurning Movement Lane Configuration EastboundSouthboundNorthboundApproach Arnold StreetSouth 19th AvenueSouth 19th AvenueName Intersection Setup 000Pedestrian Volume [ped/h] 1691048010125Total Analysis Volume [veh/h] 01721202531Total 15-Minute Volume [veh/h] 1.00001.00001.00001.00001.00001.0000Other Adjustment Factor 0.81000.81000.81000.81000.81000.8100Peak Hour Factor 15683898204Total Hourly Volume [veh/h] 000000Other Volume [veh/h] 000000Existing Site Adjustment Volume [veh/h] 000000Pass-by Trips [veh/h] 000000Diverted Trips [veh/h] 000000Site-Generated Trips [veh/h] 000000In-Process Volume [veh/h] 1.00001.00001.00001.00001.00001.0000Growth Factor 0.000.000.002.601.100.00Heavy Vehicles Percentage [%] 1.00001.00001.00001.00001.00001.0000Base Volume Adjustment Factor 15683898204Base Volume Input [veh/h] Arnold StreetSouth 19th AvenueSouth 19th AvenueName Volumes 3/4/20261Scenario 1: 1 Existing (2026) AM Peak Version 2023 (SP 0-10) Generated with DIntersection LOS 1.16d_I, Intersection Delay [s/veh] DAAApproach LOS 25.570.000.04d_A, Approach Delay [s/veh] 28.6428.640.000.000.000.3595th-Percentile Queue Length [ft/ln] 1.151.150.000.000.000.0195th-Percentile Queue Length [veh/ln] CDAAAAMovement LOS 15.5525.710.000.000.008.34d_M, Delay for Movement [s/veh] 0.000.290.000.000.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 000Number of Storage Spaces in Median NoTwo-Stage Gap Acceptance 000Storage Area [veh] NoFlared Lane StopFreeFreePriority Scheme Intersection Settings 3/4/20262Scenario 1: 1 Existing (2026) AM Peak Version 2023 (SP 0-10) Generated with 0.141Volume to Capacity (v/c): CLevel Of Service: 22.3Delay (sec / veh): 15 minutesAnalysis Period: HCM 7th EditionAnalysis Method: Two-way stopControl Type: Intersection 1: S 19th Ave & Arnold St Intersection Level Of Service Report NoNoNoCrosswalk 0.000.000.00Grade [%] 25.0040.0040.00Speed [mph] 0.000.000.000.000.000.00Exit Pocket Length [ft] 000000No. of Lanes in Exit Pocket 100.00100.00100.00100.00100.00400.00Entry Pocket Length [ft] 000001No. of Lanes in Entry Pocket 12.0012.0012.0012.0012.0012.00Lane Width [ft] RightLeftRightThruThruLeftTurning Movement Lane Configuration EastboundSouthboundNorthboundApproach Arnold StreetSouth 19th AvenueSouth 19th AvenueName Intersection Setup 000Pedestrian Volume [ped/h] 534687165031Total Analysis Volume [veh/h] 18171791260Total 15-Minute Volume [veh/h] 1.00001.00001.00001.00001.00001.0000Other Adjustment Factor 0.92000.92000.92000.92000.92000.9200Peak Hour Factor 531636594631Total Hourly Volume [veh/h] 000000Other Volume [veh/h] 000000Existing Site Adjustment Volume [veh/h] 000000Pass-by Trips [veh/h] 000000Diverted Trips [veh/h] 000000Site-Generated Trips [veh/h] 000000In-Process Volume [veh/h] 1.00001.00001.00001.00001.00001.0000Growth Factor 0.000.000.000.200.400.00Heavy Vehicles Percentage [%] 1.00001.00001.00001.00001.00001.0000Base Volume Adjustment Factor 531636594631Base Volume Input [veh/h] Arnold StreetSouth 19th AvenueSouth 19th AvenueName Volumes 3/4/20261Scenario 2: 2 Existing (2026) PM Peak Version 2023 (SP 0-10) Generated with CIntersection LOS 0.63d_I, Intersection Delay [s/veh] CAAApproach LOS 21.130.000.02d_A, Approach Delay [s/veh] 12.8812.880.000.000.000.0995th-Percentile Queue Length [ft/ln] 0.520.520.000.000.000.0095th-Percentile Queue Length [veh/ln] BCAAAAMovement LOS 13.2622.280.000.000.009.27d_M, Delay for Movement [s/veh] 0.010.140.000.010.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 000Number of Storage Spaces in Median NoTwo-Stage Gap Acceptance 000Storage Area [veh] NoFlared Lane StopFreeFreePriority Scheme Intersection Settings 3/4/20262Scenario 2: 2 Existing (2026) PM Peak Version 2023 (SP 0-10) Generated with CAPACITY CALCULATIONS – FUTURE (2031) ATTACHMENT C Avg Delay (s/veh) LOS 95th % Queue (veh) Avg Delay (s/veh) LOS 95th % Queue (veh) NB 0.0 A 1 0.0 A 0 SB 0.4 A 1 0.6 A 1 EB 38.8 E 2 45.3 E 2 WB 18.7 C 1 14.8 B 1 Intersection 2.6 A --2.0 A -- S 19th Ave & Arnold St Intersection Control Two-Way Stop-Control (EB/WB) Intersection Approach Future (2031) AM Peak PM Peak 0.385Volume to Capacity (v/c): ELevel Of Service: 39.0Delay (sec / veh): 15 minutesAnalysis Period: HCM 7th EditionAnalysis Method: Two-way stopControl Type: Intersection 1: S 19th Ave & Arnold St Intersection Level Of Service Report NoNoNoNoCrosswalk 0.000.000.000.00Grade [%] 25.0025.0040.0040.00Speed [mph] 0.000.000.000.000.000.000.000.000.000.000.000.00Exit Pocket Length [ft] 000000000000No. of Lanes in Exit Pocket 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00400.00Entry Pocket Length [ft] 000000000001No. of Lanes in Entry Pocket 12.0012.0012.0012.0012.0012.0012.0012.0012.0012.0012.0012.00Lane Width [ft] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName Intersection Setup 0000Pedestrian Volume [ped/h] 580131065104702159704Total Analysis Volume [veh/h] 140300162117512421Total 15-Minute Volume [veh/h] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Other Adjustment Factor 0.92000.92000.92000.92000.92000.92000.92000.92000.92000.92000.92000.9200Peak Hour Factor 53012106094321958924Total Hourly Volume [veh/h] 000000000000Other Volume [veh/h] 000000000000Existing Site Adjustment Volume [veh/h] 000000000000Pass-by Trips [veh/h] 000000000000Diverted Trips [veh/h] 000000000000Site-Generated Trips [veh/h] 000000000000In-Process Volume [veh/h] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Growth Factor 0.000.000.000.000.000.000.002.600.000.001.100.00Heavy Vehicles Percentage [%] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Base Volume Adjustment Factor 53012106094321958924Base Volume Input [veh/h] Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName Volumes 3/4/20261Scenario 3: 3 Future (2031) AM Peak Version 2023 (SP 0-10) Generated with EIntersection LOS 2.55d_I, Intersection Delay [s/veh] CEAAApproach LOS 18.7338.750.420.03d_A, Approach Delay [s/veh] 19.8619.8619.8641.8641.8641.860.000.440.890.000.000.2895th-Percentile Queue Length [ft/ln] 0.790.790.791.671.671.670.000.020.040.000.000.0195th-Percentile Queue Length [veh/ln] BEECEEAABAAAMovement LOS 14.6838.3636.7722.3748.0339.000.000.0010.060.000.008.31d_M, Delay for Movement [s/veh] 0.110.000.100.000.000.380.000.000.030.000.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 0000Number of Storage Spaces in Median NoNoTwo-Stage Gap Acceptance 0000Storage Area [veh] NoNoFlared Lane StopStopFreeFreePriority Scheme Intersection Settings 3/4/20262Scenario 3: 3 Future (2031) AM Peak Version 2023 (SP 0-10) Generated with 0.309Volume to Capacity (v/c): ELevel Of Service: 48.3Delay (sec / veh): 15 minutesAnalysis Period: HCM 7th EditionAnalysis Method: Two-way stopControl Type: Intersection 1: S 19th Ave & Arnold St Intersection Level Of Service Report NoNoNoNoCrosswalk 0.000.000.000.00Grade [%] 25.0025.0040.0040.00Speed [mph] 0.000.000.000.000.000.000.000.000.000.000.000.00Exit Pocket Length [ft] 000000000000No. of Lanes in Exit Pocket 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00400.00Entry Pocket Length [ft] 000000000001No. of Lanes in Entry Pocket 12.0012.0012.0012.0012.0012.0012.0012.0012.0012.0012.0012.00Lane Width [ft] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName Intersection Setup 0000Pedestrian Volume [ped/h] 4001050367478764155571Total Analysis Volume [veh/h] 1002109181971641390Total 15-Minute Volume [veh/h] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Other Adjustment Factor 0.92000.92000.92000.92000.92000.92000.92000.92000.92000.92000.92000.9200Peak Hour Factor 370950336872459145121Total Hourly Volume [veh/h] 000000000000Other Volume [veh/h] 000000000000Existing Site Adjustment Volume [veh/h] 000000000000Pass-by Trips [veh/h] 000000000000Diverted Trips [veh/h] 000000000000Site-Generated Trips [veh/h] 000000000000In-Process Volume [veh/h] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Growth Factor 0.000.000.000.000.000.000.000.200.000.000.400.00Heavy Vehicles Percentage [%] 1.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.00001.0000Base Volume Adjustment Factor 370950336872459145121Base Volume Input [veh/h] Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName Volumes 3/4/20261Scenario 4: 4 Future (2031) PM Peak Version 2023 (SP 0-10) Generated with EIntersection LOS 1.99d_I, Intersection Delay [s/veh] BEAAApproach LOS 14.8045.300.600.02d_A, Approach Delay [s/veh] 10.1210.1210.1231.3031.3031.300.001.382.760.000.000.1095th-Percentile Queue Length [ft/ln] 0.400.400.401.251.251.250.000.060.110.000.000.0095th-Percentile Queue Length [veh/ln] BEDCFEAAAAAAMovement LOS 11.1940.7729.2123.6750.6448.310.000.008.640.000.009.57d_M, Delay for Movement [s/veh] 0.060.000.060.010.000.310.000.010.060.000.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 0000Number of Storage Spaces in Median NoNoTwo-Stage Gap Acceptance 0000Storage Area [veh] NoNoFlared Lane StopStopFreeFreePriority Scheme Intersection Settings 3/4/20262Scenario 4: 4 Future (2031) PM Peak Version 2023 (SP 0-10) Generated with SIGNAL WARRANT WORKSHEETS ATTACHMENT D Existing Volumes (2026)Future Volumes (2031) x x x x x x x x ---- x x x x x x ---- Yes No x x TRAFFIC SIGNAL WARRANTS 8. Roadway Network South 19th Avenue & Arnold Street South 19th Avenue & Arnold Street Signals Warranted 1. Eight-Hour Vehicular Volume 2. Four-Hour Vehicular Volume 3. Peak Hour 4. Pedestrian Volume 5. School Crossing 6. Coordinated Signal System 7. Crash History 9. Intersection Near a Grade Crossing Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) Hour Begin NB SB EB WB 0:00 10 22 4 0 32 4 1:00 1 6 0 0 7 0 2:00 4 11 1 0 15 1 3:00 7 2 1 0 9 1 4:00 39 8 2 0 47 2 5:00 102 19 9 0 121 9 6:00 200 74 27 0 274 27 7:00 514 265 61 0 779 61 8:00 752 361 54 0 1113 54 9:00 401 265 38 0 666 38 10:00 312 285 25 0 597 25 11:00 410 334 26 0 744 26 12:00 326 440 36 0 766 36 13:00 366 453 36 0 819 36 14:00 367 499 32 0 866 32 15:00 480 669 30 0 1149 30 16:00 412 631 27 0 1043 27 17:00 465 723 36 0 1188 36 18:00 307 516 35 0 823 35 19:00 212 366 24 0 578 24 20:00 152 333 18 0 485 18 21:00 77 160 17 0 237 17 22:00 65 98 11 0 163 11 23:00 16 60 6 0 76 6 TOTAL 5997 6600 556 0 12597 556 Condition A - Minimum Vehicular Volume (100% Columns):Hrs No 0 Condition B - Interruption of Continuous Traffic (100% Columns): No 0 Combination of Conditions A & B (80% Columns): No 0 No 1 Warrant 1 Satisfied?No Warrant 1: Eight-Hour Vehicular Volume General Information Agency/Company: Date: Project Number: Major Street Total > 720 and Higher Minor Street Total > 60 for 8 hours? Higher Volume Minor Approach Major Street Total (Both Approaches) Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Avg. Entering Volume Major Street Total > 480 and Higher Minor Street Total > 120 for 8 hours? Major Street Total > 600 and Higher Minor Street Total > 150 for 8 hours? Major Street Total > 900 and Higher Minor Street Total > 75 for 8 hours? Project Description: Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) Hour Begin NB SB EB WB 0:00 11 25 4 4 36 4 1:00 1 7 0 0 8 0 2:00 4 13 1 1 17 1 3:00 8 2 1 1 10 1 4:00 42 9 2 2 51 2 5:00 110 21 10 11 131 11 6:00 215 84 29 33 299 33 7:00 553 301 65 73 854 73 8:00 808 410 57 64 1218 64 9:00 431 301 40 45 732 45 10:00 336 323 27 30 659 30 11:00 441 380 28 31 821 31 12:00 350 500 38 43 850 43 13:00 394 514 38 43 908 43 14:00 395 567 34 38 962 38 15:00 517 760 32 36 1277 36 16:00 443 717 29 33 1160 33 17:00 500 821 38 43 1321 43 18:00 330 586 37 41 916 41 19:00 228 416 26 29 644 29 20:00 163 378 19 21 541 21 21:00 83 182 18 20 265 20 22:00 70 111 12 13 181 13 23:00 18 68 6 7 86 7 TOTAL 6451 7496 591 662 13947 662 Condition A - Minimum Vehicular Volume (100% Columns):Hrs No 0 Condition B - Interruption of Continuous Traffic (100% Columns): No 0 Combination of Conditions A & B (80% Columns): No 0 No 2 Warrant 1 Satisfied?No Date: Warrant 1: Eight-Hour Vehicular Volume General Information Minor Street (Approach Lanes): Agency/Company: Higher Volume Minor Approach Project Number: Project Description: Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Major Street Total > 900 and Higher Minor Street Total > 75 for 8 hours? Major Street Total > 480 and Higher Minor Street Total > 120 for 8 hours? Major Street Total > 720 and Higher Minor Street Total > 60 for 8 hours? Avg. Entering Volume Major Street Total (Both Approaches) Major Street Total > 600 and Higher Minor Street Total > 150 for 8 hours? Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) Hour Begin NB SB EB WB 0:00 10 22 4 0 32 4 1:00 1 6 0 0 7 0 2:00 4 11 1 0 15 1 3:00 7 2 1 0 9 1 4:00 39 8 2 0 47 2 5:00 102 19 9 0 121 9 6:00 200 74 27 0 274 27 7:00 514 265 61 0 779 61 8:00 752 361 54 0 1113 54 9:00 401 265 38 0 666 38 10:00 312 285 25 0 597 25 11:00 410 334 26 0 744 26 12:00 326 440 36 0 766 36 13:00 366 453 36 0 819 36 14:00 367 499 32 0 866 32 15:00 480 669 30 0 1149 30 16:00 412 631 27 0 1043 27 17:00 465 723 36 0 1188 36 18:00 307 516 35 0 823 35 19:00 212 366 24 0 578 24 20:00 152 333 18 0 485 18 21:00 77 160 17 0 237 17 22:00 65 98 11 0 163 11 23:00 16 60 6 0 76 6 TOTAL 5997 6600 556 0 12597 556 Meets warrant criteria on graph for minimum of 4 hours (100% thresholds)?No (0 hrs) Warrant 2 Satisfied?No Project Description: Warrant 2: Four-Hour Vehicular Volume General Information Agency/Company: Date: Project Number: Higher Volume Minor Approach Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Avg. Entering Volume Major Street Total (Both Approaches) Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) Hour Begin NB SB EB WB 0:00 11 25 4 4 36 4 1:00 1 7 0 0 8 0 2:00 4 13 1 1 17 1 3:00 8 2 1 1 10 1 4:00 42 9 2 2 51 2 5:00 110 21 10 11 131 11 6:00 215 84 29 33 299 33 7:00 553 301 65 73 854 73 8:00 808 410 57 64 1218 64 9:00 431 301 40 45 732 45 10:00 336 323 27 30 659 30 11:00 441 380 28 31 821 31 12:00 350 500 38 43 850 43 13:00 394 514 38 43 908 43 14:00 395 567 34 38 962 38 15:00 517 760 32 36 1277 36 16:00 443 717 29 33 1160 33 17:00 500 821 38 43 1321 43 18:00 330 586 37 41 916 41 19:00 228 416 26 29 644 29 20:00 163 378 19 21 541 21 21:00 83 182 18 20 265 20 22:00 70 111 12 13 181 13 23:00 18 68 6 7 86 7 TOTAL 6451 7496 591 662 13947 662 Meets warrant criteria on graph for minimum of 4 hours (100% thresholds)?No (0 hrs) Warrant 2 Satisfied?No Avg. Entering Volume Higher Volume Minor Approach Project Description: Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 2: Four-Hour Vehicular Volume General Information Agency/Company: Date: Project Number: Major Street Total (Both Approaches) Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) Category A:Peak Period:AM Total stopped time delay for minor approach > 4 veh-hrs?No (0.40) High minor approach volume > 100 for peak hour?No (57) Total entering volume > 650 for peak hour?Yes (1278) Category A warrant satisfied?No Category B: Meets warrant criteria on graph for minimum of one hour (100% thresholds)?No Warrant 3 Satisfied?No High Minor Approach Volume (vehs) 36 Total Entering Volume (vehs) 1222 PM Peak Hour 5:00 - 6:00 PM 0.21 Total Volume of Major Approaches (vehs) 1186 High Minor Total Stopped Time Delay (hrs) Total Volume of Major Approaches (vehs) 1221 High Minor Approach Volume (vehs) 57 Total Entering Volume (vehs) 1278 AM Peak Hour 7:45 - 8:45 AM 0.40High Minor Total Stopped Time Delay (hrs) Project Description: Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 3: Peak Hour General Information Agency/Company: Date: Project Number: Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) Category A:Peak Period:AM Total stopped time delay for minor approach > 4 veh-hrs?No (0.66) High minor approach volume > 100 for peak hour?No (61) Total entering volume > 800 for peak hour?Yes (1487) Category A warrant satisfied?No Category B: Meets warrant criteria on graph for minimum of one hour (100% thresholds)?No Warrant 3 Satisfied?No Project Description: Warrant 3: Peak Hour General Information Agency/Company: Date: Project Number: High Minor Approach Volume (vehs) 61 Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): AM Peak Hour 7:45 - 8:45 AM High Minor Total Stopped Time Delay (hrs) 0.66 Total Volume of Major Approaches (vehs) 1361 Total Entering Volume (vehs) 1487 PM Peak Hour 5:00 - 6:00 PM High Minor Total Stopped Time Delay (hrs) 0.48 Total Volume of Major Approaches (vehs) 1378 High Minor Approach Volume (vehs) 38 Total Entering Volume (vehs) 1462 Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) This warrant is intended for application where the traffic volume on a major street is so heavy that pedestrians experience excessive delay in crossing the major street. Hour Begin 0:00 32 0 1:00 7 0 2:00 15 0 3:00 9 0 4:00 47 0 5:00 121 0 6:00 274 0 7:00 779 0 8:00 1113 0 9:00 666 0 10:00 597 0 11:00 744 0 12:00 766 0 13:00 819 0 14:00 866 0 15:00 1149 1 16:00 1043 0 17:00 1188 0 18:00 823 1 19:00 578 0 For each of any 4 hours of an average day, do the plotted points 20:00 485 0 representing the vehicles per hour on the major street and the 21:00 237 0 corresponding pedestrians per hour crossing the major street fall above the 22:00 163 0 curve in Figure 4C-5?No 23:00 76 0 TOTAL 12,597 2 For 1 hour of an average day, does the plotted point representing vehicles per hour on the major street and the corresponding pedestrians per hour crossing the major street fall above the curve in Figure 4C-6? No Warrant 4 Satisfied?No Pedestrian Volume Crossing Major Street Warrant 4: Pedestrian Volume General Information Agency/Company: Date: Project Number: Project Description: Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Major Street Total Traffic Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) This warrant is intended for application where the traffic volume on a major street is so heavy that pedestrians experience excessive delay in crossing the major street. Hour Begin 0:00 36 0 1:00 8 0 2:00 17 0 3:00 10 0 4:00 51 0 5:00 131 0 6:00 299 0 7:00 854 0 8:00 1218 0 9:00 732 0 10:00 659 0 11:00 821 0 12:00 850 0 13:00 908 0 14:00 962 0 15:00 1277 1 16:00 1160 0 17:00 1321 0 18:00 916 1 19:00 644 0 For each of any 4 hours of an average day, do the plotted points 20:00 541 0 representing the vehicles per hour on the major street and the 21:00 265 0 corresponding pedestrians per hour crossing the major street fall above the 22:00 181 0 curve in Figure 4C-5?No 23:00 86 0 TOTAL 13,947 2 For 1 hour of an average day, does the plotted point representing vehicles per hour on the major street and the corresponding pedestrians per hour crossing the major street fall above the curve in Figure 4C-6? No Warrant 4 Satisfied?No Pedestrian Volume Crossing Major Street Warrant 4: Pedestrian Volume General Information Agency/Company: Date: Project Number: Project Description: Jurisdiction: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Major Street Total Traffic Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) This warrant is intended for application where the fact that school children (elementary through high school students) cross the major street is the principle reason to consider installing a traffic signal. This warrant shall not be applied at locations where the distance to the nearest traffic control signal along the major street is less than 300 feet, unless it can be shown that the proposed traffic signal would not restrict the progressive movement of traffic. Is the number of adequate gaps in the major crossing traffic steam during the primary crossing period less than the number of minutes in that crossing period?N/A Do 20 or more students cross at this location during the highest crossing hour? No Warrant 5 Satisfied?N/A Are any adjacent traffic signals located so far away that they do not provide a necessary degree of platooning and/or progressive operation?No Warrant 6 Satisfied?No This warrant is intended for application where the severity and frequency of crashes are the principal reasons to consider installing a traffic control signal Have adequate trials of alternatives failed to reduce the crash frequency?N/A Have at least one of the following conditions apply to the reported crash history: 1. Do the number of reported angle crashes and pedestrian crashes within a 1-year period equal or exceed the threshold number in Table 4C-2 for total angle crashes and pedestrian crashes? 2. Do the number of reported fatal-and-injury angle crashes and pedestrian crashes within a 1-year period equal or exceed the threshold number in Table 4C-2 for total fatal-and-injury angle crashes and pedestrian crashes? 3. Do the number of reported angle crashes and pedestrian crashes within a 3-year period equal or exceed the threshold number in Table 4C-3 for total angle crashes and pedestrian crashes? 4. Do the number of reported fatal-and-injury angle crashes and pedestrian crashes within a 3-year period equal or exceed the threshold number in Table 4C-3 for total fatal-and-injury angle crashes and pedestrian crashes? No Is Condition A criterion met for 80% columns of Warrant 1 met?No Is Condition B criterion met for 80% columns of Warrant 1 met?No Are observed pedestrian volumes equal to or greater than 80% of what is required for Warrant 4? No Warrant 7 Satisfied?No General Information Agency/Company: Date: Project Number: Project Description: Jurisdiction: Warrant 7: Crash Experience Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 5: School Crossing Warrant 6: Coordinated Signal System This warrant is intended for application where installation of a traffic signal would help to provide proper platooning of vehicles and therefore provide progressive movement in a coordinated signal system. Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) This warrant is intended for application where the fact that school children (elementary through high school students) cross the major street is the principle reason to consider installing a traffic signal. This warrant shall not be applied at locations where the distance to the nearest traffic control signal along the major street is less than 300 feet, unless it can be shown that the proposed traffic signal would not restrict the progressive movement of traffic. Is the number of adequate gaps in the major crossing traffic steam during the primary crossing period less than the number of minutes in that crossing period?N/A Do 20 or more students cross at this location during the highest crossing hour? No Warrant 5 Satisfied?N/A Are any adjacent traffic signals located so far away that they do not provide a necessary degree of platooning and/or progressive operation?No Warrant 6 Satisfied?No This warrant is intended for application where the severity and frequency of crashes are the principal reasons to consider installing a traffic control signal Have adequate trials of alternatives failed to reduce the crash frequency?N/A Have at least one of the following conditions apply to the reported crash history: 1. Do the number of reported angle crashes and pedestrian crashes within a 1-year period equal or exceed the threshold number in Table 4C-2 for total angle crashes and pedestrian crashes? 2. Do the number of reported fatal-and-injury angle crashes and pedestrian crashes within a 1-year period equal or exceed the threshold number in Table 4C-2 for total fatal-and-injury angle crashes and pedestrian crashes? 3. Do the number of reported angle crashes and pedestrian crashes within a 3-year period equal or exceed the threshold number in Table 4C-3 for total angle crashes and pedestrian crashes? 4. Do the number of reported fatal-and-injury angle crashes and pedestrian crashes within a 3-year period equal or exceed the threshold number in Table 4C-3 for total fatal-and-injury angle crashes and pedestrian crashes? No Is Condition A criterion met for 80% columns of Warrant 1 met?No Is Condition B criterion met for 80% columns of Warrant 1 met?No Are observed pedestrian volumes equal to or greater than 80% of what is required for Warrant 4? No Warrant 7 Satisfied?No Jurisdiction: General Information Agency/Company: Date: Project Number: Project Description: Warrant 7: Crash Experience Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 5: School Crossing Warrant 6: Coordinated Signal System This warrant is intended for application where installation of a traffic signal would help to provide proper platooning of vehicles and therefore provide progressive movement in a coordinated signal system. Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Existing (2026) This warrant is intended for application where installation of a traffic signal could be justified in order to encourage concentration and organization of traffic flow on a roadway network Do two or more of the intersecting routes at this location have at least one of the following characteristics: A. It is part of the street or highway system that serves as the principal roadway network for through traffic flow; or B. It includes rural or suburban highways outside, entering, or traversing a City; or C. It appears as a major route on an official plan. No Does this intersection have an existing or immediately projected total entering volume of a least 1000 vehicles during a weekday typical peak hour and have a 5-year projected traffic volume that meets one or more of Warrants 1, 2, and 3 during an average weekday?No Does this intersection have an existing or immediately projected total entering volume of at least 1000 vph for each of any 5 hours of a Saturday or Sunday?N/A Warrant 8 Satisfied?No This warrant is intended for application where none of the conditions described in the other eight traffic signal warrants are met, but the proximity to the intersection of a grade crossing on an intersection approach controlled by a STOP or YIELD sign is the principal reason to consider installing a traffic signal. Does a grade crossing exist on an approach controlled by a STOP or YIELD sign whereby the center of the track nearest to the intersection is within 140 feet of the stop or yield line? No During the highest traffic volume hour during which the rail traffic uses the crossing, does the plotted point representing vehicles per hour on the major street and the corresponding vehicles per hour on the minor-street approach that crosses the track fall above the applicable curve in Figure 4C-9 or 4C-10 (whichever is applicable) for the existing combination of approach lanes over the track and the distance D, which is the clear storage distance?N/A Warrant 9 Satisfied?N/A Jurisdiction: General Information Agency/Company: Date: Project Number: Project Description: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 8: Roadway Network Warrant 9: Intersection Near a Grade Crossing Sanbell 3/16/2026 260140 19th & Arnold Signal Warrant Study City of Bozeman 40 mph South 19th Avenue (2 lanes) Arnold Street (1 lane) Analysis Year/Case:Future (2031) This warrant is intended for application where installation of a traffic signal could be justified in order to encourage concentration and organization of traffic flow on a roadway network Do two or more of the intersecting routes at this location have at least one of the following characteristics: A. It is part of the street or highway system that serves as the principal roadway network for through traffic flow; or B. It includes rural or suburban highways outside, entering, or traversing a City; or C. It appears as a major route on an official plan. No Does this intersection have an existing or immediately projected total entering volume of a least 1000 vehicles during a weekday typical peak hour and have a 5-year projected traffic volume that meets one or more of Warrants 1, 2, and 3 during an average weekday?No Does this intersection have an existing or immediately projected total entering volume of at least 1000 vph for each of any 5 hours of a Saturday or Sunday?N/A Warrant 8 Satisfied?No This warrant is intended for application where none of the conditions described in the other eight traffic signal warrants are met, but the proximity to the intersection of a grade crossing on an intersection approach controlled by a STOP or YIELD sign is the principal reason to consider installing a traffic signal. Does a grade crossing exist on an approach controlled by a STOP or YIELD sign whereby the center of the track nearest to the intersection is within 140 feet of the stop or yield line? No During the highest traffic volume hour during which the rail traffic uses the crossing, does the plotted point representing vehicles per hour on the major street and the corresponding vehicles per hour on the minor-street approach that crosses the track fall above the applicable curve in Figure 4C-9 or 4C-10 (whichever is applicable) for the existing combination of approach lanes over the track and the distance D, which is the clear storage distance?N/A Warrant 9 Satisfied?N/A Jurisdiction: General Information Agency/Company: Date: Project Number: Project Description: Major Street Speed Limit: Major Street (Approach Lanes): Minor Street (Approach Lanes): Warrant 8: Roadway Network Warrant 9: Intersection Near a Grade Crossing ATTACHMENT E CAPACITY CALCULATIONS – FUTURE IMPROVED (2031) Avg Delay (s/veh) LOS 95th % Queue (veh) Avg Delay (s/veh) LOS 95th % Queue (veh) NB 11.7 B 10 9.1 A 5 SB 9.0 A 5 11.9 B 9 EB 29.9 C 3 28.6 C 2 WB 29.3 C 3 28.7 C 2 Intersection 12.3 B --11.7 B -- NB 0.0 A 1 0.0 A 0 SB 0.4 A 1 0.6 A 1 EB 9.7 A 0 11.3 B 1 WB 12.6 B 1 10.3 B 1 Intersection 0.6 A --0.7 A -- Intersection Approach Future with Improvements (2031) AM Peak PM Peak S 19th Ave & Arnold St Intersection Control TWSC (EB/WB) - Egress LT Restriction S 19th Ave & Arnold St Intersection Control Signalized Option 1: Signalized CCAABBBLane Group LOS 29.2929.929.118.9311.7411.7311.09d, Delay for Lane Group [s/veh] 0.140.170.280.270.500.500.01X, volume / capacity 393392879918982984517c, Capacity [veh/h] 134312351396139615591561838s, saturation flow rate [veh/h] 3333Arrival type 1750175017501750175017501750so, Base Saturation Flow per Lane [pc/h/ln] 0.040.050.180.180.310.310.00(v / s)_i Volume / Saturation Flow Rate 0.260.260.630.630.630.630.63g / C, Green / Cycle Lane Group Calculations 0Pedestrian Clearance [s] 0Pedestrian Walk [s] 0Pedestrian Signal Group NoNoNoNoPedestrian Recall NoNoNoNoMaximum Recall NoNoNoNoMinimum Recall 0.02.00.00.02.00.00.02.00.00.02.00.0l1, Start-Up Lost Time [s] 0.00.00.00.00.00.00.00.00.00.00.00.0Delayed Vehicle Green [s] 0190019002100210Pedestrian Clearance [s] 070070070070Walk [s] 0300030007000700Split [s] 0.01.00.00.01.00.00.02.00.00.02.00.0All red [s] 0.03.00.00.03.00.00.05.00.00.05.00.0Amber [s] 0260026006300630Maximum Green [s] 05005001000100Minimum Green [s] ------------Lead / Lag Auxiliary Signal Groups 040080020060Signal Group PermissPermissPermissPermissPermissPermissPermissPermissPermissPermissPermissPermissControl Type 0.00Lost time [s] Fixed timeActuation Type Time of Day Pattern CoordinatedCoordination Type Pattern 1Active Pattern 100Cycle Length [s] Intersection Settings 43013106584702149704Total Analysis Volume [veh/h] 53012106094321958924Base Volume Input [veh/h] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName HCM 7th EditionAnalysis Method SignalizedControl Type S 19th Ave & Arnold StIntersection 1Number 3/6/20262Scenario 3: 3 Future (2031) AM Peak Version 2023 (SP 0-10) Generated with 0.366Intersection V/C BIntersection LOS 12.25d_I, Intersection Delay [s/veh] CCABApproach LOS 29.2929.929.0211.73d_A, Approach Delay [s/veh] NoNoNoNoNoYesNoNoNoNoNoNoCritical Movement CCCCCCAAABBBMovement LOS 29.2929.2929.2929.9229.9229.929.119.028.9311.7411.7411.09d_M, Delay for Movement [s/veh] Movement, Approach, & Intersection Results 50.7360.84102.23102.81230.18230.421.9395th-Percentile Queue Length [ft/ln] 2.032.434.094.119.219.220.0895th-Percentile Queue Length [veh/ln] 28.1833.8056.8057.11134.93135.111.0750th-Percentile Queue Length [ft/ln] 1.131.352.272.285.405.400.0450th-Percentile Queue Length [veh/ln] NoYesNoNoYesNoNoCritical Lane Group CCAABBBLane Group LOS Option 2: EB/WB Egress LT Restriction 000000000000c_m,x, Stage 1 [veh/h] 531118076711901000001000007161000001000001093c_m,x, Movement Capacity [veh/h] 1091534010913290001636001636c_p,x, Stage 2 [veh/h] 1353330012155370002172001888c_p,x, Stage 1 [veh/h] 5311230767123000716001093c_p,x, Potential Capacity [veh/h] 0522009830000000v_c, Stage 2 488981024051700097500480v_c, Stage 1 48815030240150000097500480v_c, Conflicting Flow Rate 230230112112Calculated Rank Capacity Analysis 0000Number of Storage Spaces in Median NoNoTwo-Stage Gap Acceptance 0000Storage Area [veh] NoNoFlared Lane StopStopFreeFreePriority Scheme Intersection Settings 5800100104702159704Total Analysis Volume [veh/h] 530010094321958924Base Volume Input [veh/h] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName HCM 7th EditionAnalysis Method Two-way stopControl Type S 19th Ave & Arnold StIntersection 1Number 3/6/20263Scenario 3: 3 Future (2031) AM Peak Version 2023 (SP 0-10) Generated with BIntersection LOS 0.64d_I, Intersection Delay [s/veh] 12.60d_I, Worst Movement Control Delay [s/veh] 0.11V/C_I, Worst Movement V/C Ratio BAAAApproach LOS 12.609.700.420.03d_A, Approach Delay [s/veh] 9.139.130.000.100.100.000.000.440.890.000.000.2895th-Percentile Queue Length [ft/ln] 0.370.370.000.000.000.000.000.020.040.000.000.0195th-Percentile Queue Length [veh/ln] YesNoNoNoNoNoNoNoCritical Movement BEAEAABAAAMovement LOS 12.6036.280.009.7035.350.000.000.0010.060.000.008.31d_M, Delay for Movement [s/veh] 0.110.000.000.000.000.000.000.000.030.000.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 531118076711901000001000007161000001000001093c_T, Total Capacity [veh/h] 000000000000c_m,x, Stage 2 [veh/h] 000000000000c_m,x, Stage 1 [veh/h] 3/6/20264Scenario 3: 3 Future (2031) AM Peak Version 2023 (SP 0-10) Generated with Option 1: Signalized CCBBAABLane Group LOS 28.7128.6212.1811.529.109.1016.01d, Delay for Lane Group [s/veh] 0.100.100.510.490.290.290.00X, volume / capacity 394406882930982989332c, Capacity [veh/h] 134113001401141115591570597s, saturation flow rate [veh/h] 3333Arrival type 1750175017501750175017501750so, Base Saturation Flow per Lane [pc/h/ln] 0.030.030.320.320.180.180.00(v / s)_i Volume / Saturation Flow Rate 0.260.260.630.630.630.630.63g / C, Green / Cycle Lane Group Calculations 0Pedestrian Clearance [s] 0Pedestrian Walk [s] 0Pedestrian Signal Group NoNoNoNoPedestrian Recall NoNoNoNoMaximum Recall NoNoNoNoMinimum Recall 0.02.00.00.02.00.00.02.00.00.02.00.0l1, Start-Up Lost Time [s] 0.00.00.00.00.00.00.00.00.00.00.00.0Delayed Vehicle Green [s] 0190019002100210Pedestrian Clearance [s] 070070070070Walk [s] 0300030007000700Split [s] 0.01.00.00.01.00.00.02.00.00.02.00.0All red [s] 0.03.00.00.03.00.00.05.00.00.05.00.0Amber [s] 0260026006300630Maximum Green [s] 05005001000100Minimum Green [s] ------------Lead / Lag Auxiliary Signal Groups 040080020060Signal Group PermissPermissPermissPermissPermissPermissPermissPermissPermissPermissPermissPermissControl Type 0.00Lost time [s] Fixed timeActuation Type Time of Day Pattern CoordinatedCoordination Type Pattern 1Active Pattern 100Cycle Length [s] Intersection Settings 3001040365578764115571Total Analysis Volume [veh/h] 370950336872459145121Base Volume Input [veh/h] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName HCM 7th EditionAnalysis Method SignalizedControl Type S 19th Ave & Arnold StIntersection 1Number 3/6/20262Scenario 4: 4 Future (2031) PM Peak Version 2023 (SP 0-10) Generated with 0.354Intersection V/C BIntersection LOS 11.71d_I, Intersection Delay [s/veh] CCBAApproach LOS 28.7128.6211.859.11d_A, Approach Delay [s/veh] YesNoNoNoNoNoNoNoNoNoNoNoCritical Movement CCCCCCBBBAABMovement LOS 28.7128.7128.7128.6228.6228.6212.1811.8511.529.109.1016.01d_M, Delay for Movement [s/veh] Movement, Approach, & Intersection Results 35.7135.57220.58214.51117.16117.730.6395th-Percentile Queue Length [ft/ln] 1.431.428.828.584.694.710.0395th-Percentile Queue Length [veh/ln] 19.8419.76127.86123.4165.0965.410.3550th-Percentile Queue Length [ft/ln] 0.790.795.114.942.602.620.0150th-Percentile Queue Length [veh/ln] NoYesNoYesNoNoNoCritical Lane Group CCBBAABLane Group LOS Option 2: EB/WB Egress LT Restriction 000000000000c_m,x, Stage 1 [veh/h] 717104057910801000001000001011100000100000789c_m,x, Movement Capacity [veh/h] 1091327010915060001636001636c_p,x, Stage 2 [veh/h] 1240510013203410001939002104c_p,x, Stage 1 [veh/h] 7171140579119000101100789c_p,x, Potential Capacity [veh/h] 0989005740000000v_c, Stage 2 286567043195200057200861v_c, Stage 1 28615560431152600057200861v_c, Conflicting Flow Rate 230230112112Calculated Rank Capacity Analysis 0000Number of Storage Spaces in Median NoNoTwo-Stage Gap Acceptance 0000Storage Area [veh] NoNoFlared Lane StopStopFreeFreePriority Scheme Intersection Settings 40005007478764155571Total Analysis Volume [veh/h] 37005006872459145121Base Volume Input [veh/h] RightThruLeftRightThruLeftRightThruLeftRightThruLeftTurning Movement Lane Configuration WestboundEastboundSouthboundNorthboundApproach Arnold StreetArnold StreetSouth 19th AvenueSouth 19th AvenueName HCM 7th EditionAnalysis Method Two-way stopControl Type S 19th Ave & Arnold StIntersection 1Number 3/6/20263Scenario 4: 4 Future (2031) PM Peak Version 2023 (SP 0-10) Generated with BIntersection LOS 0.67d_I, Intersection Delay [s/veh] 11.28d_I, Worst Movement Control Delay [s/veh] 0.01V/C_I, Worst Movement V/C Ratio BBAAApproach LOS 10.3211.280.600.02d_A, Approach Delay [s/veh] 4.424.420.000.650.650.000.001.382.760.000.000.1095th-Percentile Queue Length [ft/ln] 0.180.180.000.030.030.000.000.060.110.000.000.0095th-Percentile Queue Length [veh/ln] NoYesNoNoNoNoNoNoCritical Movement BEBEAAAAAAMovement LOS 10.3239.900.0011.2838.250.000.000.008.640.000.009.57d_M, Delay for Movement [s/veh] 0.060.000.000.010.000.000.000.010.060.000.010.00V/C, Movement V/C Ratio Movement, Approach, & Intersection Results 717104057910801000001000001011100000100000789c_T, Total Capacity [veh/h] 000000000000c_m,x, Stage 2 [veh/h] 000000000000c_m,x, Stage 1 [veh/h] 3/6/20264Scenario 4: 4 Future (2031) PM Peak Version 2023 (SP 0-10) Generated with