HomeMy WebLinkAboutTrip Generation Memo
MEMO
32 Discovery Drive Bozeman, MT 59718 (406) 582‐0221 Fax (406) 582‐5770
From: Allied Engineering Services, Inc.
Project Name: Gallatin County Regional Park Maintenance Building
Project Number: AESI 22-002
Date: September 1, 2022
Re: Trip Generation
MEMO DETAILS:
The subject property is known as the Gallatin County Regional Park and is defined as Tract 3A-1 of
COS 2202B. The proposed improvements involve construction of a park maintenance and storage
building with an associated parking lot, located west of the existing Dinosaur Park parking lot. The
area proposed for improvement currently consists of a gravel parking/storage area and is accessed
from an existing driveway approach off Vaquero Parkway. The existing driveway approach is the
proposed access location for the maintenance building. Trip generation estimates for the proposed
development are based on Trip Generation 9th Edition – Institute of Transportation Engineers (ITE).
The land use closest to the proposed project is for warehousing (Section 150 of ITE manual). The ITE
manual provides the following description for warehousing land use, “Warehouses are primarily
devoted to the storage of materials, but they may also include office and maintenance areas.” The
proposed maintenance building is 1,281 square feet. Table 1 provides a summary of trips generated
based on gross floor area of the proposed maintenance building. It should be noted that the proposed
gross floor area is at the lower end of the range provided in the ITE Manual for trip estimates.
According to the analysis, the proposed development will generate 4 trips on an average weekday.
Table 1. Warehousing Trip Generation Based on Gross Floor Area
Description Method Average
Rate
Total
Trips
%
Entering
%
Exiting
Trips
Entering
Trips
Exiting
Weekday, A.M. Peak
Hour of Generator
Gross Floor Area
per 1,000 SF
(1.281)
0.42 1 65 35 1 0
Weekday, P.M. Peak
Hour of Generator
Gross Floor Area
per 1,000 SF
(1.281)
0.45 1 19 81 0 1
Weekday
Gross Floor Area
per 1,000 SF
(1.281)
3.56 4 50 50 2 2