HomeMy WebLinkAbout008 North Wallace Residences TRAFFIC STUDY
MEMO
32 Discovery Drive ♦ Bozeman, MT 59718 ♦ (406) 582-0221 ♦ Fax (406) 582-5770
From: Allied Engineering Services, Inc.
Project Name: North Wallace Apartments
Project Number: AESI 22-058
Date: July 21, 2022
Re: Trip Generation
MEMO DETAILS: The purpose of this memo is to outline the estimated peak trip generation for the residential site development of Babcock and Davis Addition to Bozeman Subdivision, W2 Lot 3 (428 North Wallace). Trip generation estimates for the proposed residential development are based on Trip Generation 9th Edition – Institute of Transportation Engineers (ITE).
The approximately 0.3-acre site currently consists of a single-family home with a detached garage. The proposed site improvements will involve demolition the existing home and the construction of four (4)
residential units. A duplex with 3-bedroom units, a 4-bedroom single family home, and a 1-bedroom ADU above the existing garage is proposed.
Each unit within the duplex will be provided parking with an attached 2-car garage and an additional space in the parking lot to the east. The main home will use the existing 2-car garage and the two spaces in front of the garage. The ADU will have a designated parking space between the residence and the condos. Access for all
structures is provided off North Wallace Ave. The land use for the proposed project is assumed to be a combination of Single-Family Detached Housing
(Section 210 of ITE manual) for the main home and Residential Condominium/Townhouse (Section 230 of ITE manual) for the duplex and ADU. Table 1 provides a summary of trips generated for the single-family home based on one dwelling unit. Table 2 provides a summary of trips generated for the duplex and ADU based on 3 dwelling units. According to the ITE manual, the weekday A.M. and P.M. peak hour of the generator typically coincides 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.
July 22, 2022
Allied Engineering Services, Inc. Memo Page 2
Table 1 – Single Family Home Trip Generation Based on 1 Dwelling Unit
Description Method Average Rate Total Trips % Entering % Exiting Trips Entering Trips Exiting
Weekday, A.M. Peak Hour Dwelling Units 0.77 0.77 26 74 0.20 0.57
Weekday, P.M. Peak Hour Dwelling Units 1.02 1.02 64 36 0.65 0.37
Weekday Dwelling
Units 9.52 9.52 50 50 4.76 4.76
Table 2 – Residential Condominium/Townhouse Trip Generation Based on 3 Dwelling Units
Description Method Average
Rate
Total
Trips
%
Entering
%
Exiting
Trips
Entering
Trips
Exiting
Weekday, A.M. Peak Hour
Dwelling Units 0.44 1.32 19 81 0.25 1.07
Weekday, P.M. Peak Hour
Dwelling Units 0.52 1.56 64 36 1.00 0.56
Weekday Dwelling Units 5.81 17.43 50 50 8.72 8.72
Table 3 – Trip Summary
Description Total Trips
Total Trips Entering
Total Trips Exiting
Weekday, A.M.
Peak Hour 2.09 0.45 1.64
Weekday, P.M. Peak Hour 2.58 1.65 0.93
Weekday 26.95 13.48 13.48