HomeMy WebLinkAbout36. Traffic Study 220314 ARB Flagship Store (720 Rainier Ave S) - Trip Generation Memo - 3-14-22 TENW
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Transportation Planning | Design | Traffic Impact & Operations
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MEMORANDUM
DATE: March 14, 2022
TO: Michael Sippo/Yong Qi
City of Renton
FROM: Chandler Waldal
TENW
SUBJECT: Trip Generation Memorandum
ARB Flagship Store (720 Rainier Ave S) – Renton, WA (PRE21-000333)
TENW Project No. 2022-074
This memorandum documents the trip generation estimate completed for the proposed ARB Flagship Store
project located at 720 Rainier Ave S project in Renton, WA.
Project Description
The ARB Flagship Store project is located on the east side of Rainier Ave S at 720 Rainier Ave S in Renton,
WA as shown in the Attachment A vicinity map. The proposed project includes the redevelopment of an
existing 9,540 square foot (SF) auto-dealership to include an up to 18,000 square feet (SF) ARB Flagship
store. Vehicular access to the site would be provided via an existing driveway curb cut off of Rainier Ave S.
The proposed ARB Flagship Store project is expected to be completed and occupied by the end of 2022.
A preliminary site plan is shown in Attachment B.
Trip Generation
Trip generation for the proposed and existing uses were determined using methodology included in the Institute
of Transportation Engineers (ITE) Trip Generation Manual, 11th Edition for Land Use Codes (LUC) 943
(Automobile Parts and Service Center) and LUC 840 (Automobile Sales (New)). The resulting net new
weekday daily, AM, and PM peak hour trips (proposed less existing) are summarized in Table 1. A detailed
trip generation estimate is included in Attachment C.
Table 1
Trip Generation Summary
Net New Trips Generated
Time Period In Out Total
Weekday Daily 28 27 55
Weekday AM Peak Hour 11 5 16
Weekday PM Peak Hour -1 0 -1
As shown in Table 1, the proposed project is estimated to generate 55 net new weekday daily trips with 16
net new trips occurring during the weekday AM peak hour and a net new reduction of 1 trip occurring during
the weekday PM peak hour.
Trip Generation Memorandum
ARB Flagship Store (720 Rainier Ave S)
TENW March 14, 2022
Page 2
Next Steps
Since the project is estimated to generate less than 20 net new weekday AM or PM peak hour project trips,
please confirm that a traffic impact analysis (TIA) will not be required for the project.
If you have any questions, please feel free to contact me at (760)-994-7376 or at chandler@tenw.com.
cc: Kevin Broderick, Broderick Architects
Chis Forster, P.E. – Principal, TENW
Attachments
Trip Generation Memorandum
ARB Flagship Store (720 Rainier Ave S)
ATTACHMENT A
Site Vicinity
Trip Generation Memorandum
ARB Flagship Store (720 Rainier Ave S)
ATTACHMENT B
Preliminary Site Plan
Trip Generation Memorandum
ARB Flagship Store (720 Rainier Ave S)
ATTACHMENT C
Trip Generation Calculations
ITE
Land Use Area Units1 LUC2 In Out In Out Total
DAILY
Proposed Uses:
Automobile Parts and Service Center 18,000 GFA 943 16.60 50%50%150 149 299
Less Existing Uses:
Automobile Sales (New)9,540 GFA 840 T = 28.65(X) - 29.45 50%50%-122 -122 -244
NET NEW DAILY TRIP GENERATION = 28 27 55
AM PEAK HOUR
Proposed Uses:
Automobile Parts and Service Center 18,000 GFA 943 1.91 72%28%24 10 34
Less Existing Uses:
Automobile Sales (New)9,540 GFA 840 1.86 73%27%-13 -5 -18
NET NEW AM PEAK HOUR TRIP GENERATION = 11 5 16
PM PEAK HOUR
ITE
Land Use Area Units1 LUC2 In Out In Out Total
Proposed Uses:
Automobile Parts and Service Center 18,000 GFA 943 2.06 39%61%14 23 37
Less Existing Uses:
Automobile Sales (New)9,540 GFA 840 T = 1.81(X) + 20.91 40%60%-15 -23 -38
NET NEW PM PEAK HOUR TRIP GENERATION = -1 0 -1
Notes:
1. GFA = Gross Floor Area.
2. Institute of Transportation Engineers, Trip Generation Manual, 11th Edition, 2021 Land Use Codes.
720 Rainier Ave S - Trip Generation
Trip Rate
or Equation2
Directional Distribution Trips Generated
Trip Rate3
Directional Split Trips Generated
3/14/2022