HomeMy WebLinkAbout004 TRIP GENERATION MEMO03/05/2025
Allied Engineering Services, Inc. Memo Page 2
(per 1,000-ft2) of general office space. Table 3 provides a summary of trips generated based on gross
floor area (per 1,000-ft2) of bread/donut/bagel shop without drive-through window. Table 4 provides a
summary of total trips generated by the proposed development conservatively assuming there are no
internal trips between the residential and commercial spaces.
According to the ITE manual, the weekday A.M. & P.M. peak hours of the Residential
Condo/Townhouse and General Office typically coincide with the peak hour of the adjacent street
traffic; therefore, only one A.M. & P.M. peak hour, which represents both the peak hour of the
generator and the peak hour of the adjacent street traffic, is displayed. The Bread/Donut/Bagel Shop
without a Drive Thru weekday A.M. & P.M. peak hour of the generator rates were unavailable.
Therefore, peak hour of adjacent street traffic rates were used when calculating trips generated by the
Bread/Donut/Bagel Shop without a Drive Thru.
Please contact Wyatt Alt, Cole Oshiro-Leavitt and/or Rory Romey at 406-582-0221 or
walt@alliedengineering.com; coshiro-leavitt@alliedengineering.com; rromey@alliedengineering.com
with any questions or if additional information is required.
Table 1 – Residential Condo/Townhouse (ITE 230) Trip Generation Based on Number of Dwelling Units
Description Method Units Rate Total
Trips
%
Entering
%
Exiting
Trips
Entering
Trips
Exiting
Weekday,
A.M. Peak
Hour
Dwelling
Units 13 Ln(T)=0.80*L
n(X)+0.26 7.9 17 83 1.3 6.6
Weekday,
P.M. Peak
Hour
Dwelling
Units 13 Ln(T)=0.82*L
n(X)+0.32 11.3 67 33 7.6 3.7
1: T = Trips, X = Units
Table 2 – General Office (ITE 710) Trip Generation Based on 1,000 Square Feet Gross Floor Area
Description Method Units Rate Total
Trips
%
Entering
%
Exiting
Trips
Entering
Trips
Exiting
Weekday,
A.M. Peak
Hour
1000-FT2
Gross
Floor Area
1.38 Ln(T)=0.80*
Ln(X)+1.57 6.2 88 12 5.5 0.7
Weekday,
P.M. Peak
Hour
1000-FT2
Gross
Floor Area
1.38 1.49 2.0 17 83 0.3 1.7
1: T = Trips, X = Units
03/05/2025
Allied Engineering Services, Inc. Memo Page 3
Table 3 – Bread/Donut/Bagel Shope w/o Drive-Thru (ITE 939) Trip Generation Based on 1,000 Square Feet
Gross Floor Area
Description Method Units Rate Total
Trips
%
Entering
%
Exiting
Trips
Entering
Trips
Exiting
Weekday,
A.M. Peak
Hour
1000-FT2
Gross
Floor Area
0.55 70.22 39 47 53 18.1 20.4
Weekday,
P.M. Peak
Hour
1000-FT2
Gross
Floor Area
0.55 28 15 50 50 7.7 7.7
Table 4 – Total Trips Generated by the Proposed Development
Description Total
Trips
Weighted Average
% Entering
Weighted Average
% Exiting
Total Trips
Entering
Total Trips
Exiting
Weekday, A.M.
Peak Hour 52.7 47.3 52.7 24.9 27.7
Weekday, P.M.
Peak Hour 28.7 54.3 45.7 15.6 13.1
