HomeMy WebLinkAboutRS_Jones Renton Short Plat - Trip Generation Assessment_2020_09_10_v1.pdf TENW
Transportation Engineering NorthWest
Transportation Planning | Design | Traffic Impact & Operations
11400 SE 8th Street, Suite 200, Bellevue, WA 98004| Office (425) 889-6747
MEMORANDUM
DATE: September 10, 2020
TO: Michael Sippo
Public Works Plan Reviewer, City of Renton
FROM: Curtis Chin, P.E.
TENW
SUBJECT: Trip Generation Assessment
Jones Renton Short Plat (PRE20-000139)
TENW Project No. 2020-191
This memorandum documents the trip generation assessment completed for the proposed Jones Renton Short
Plat project in Renton, WA. The study includes a project description and trip generation estimate.
Project Description
The proposed Jones Renton Short Plat project is located at 3102 Park Ave N, Renton WA 98056 (APN
334210-3215). A vicinity map showing the location of the site and the surrounding area is included in
Attachment A. The proposed project includes subdividing an existing single family residential lot into five (5)
residential lots. The existing lot currently contains one single-family residence and accessory structure that
would be removed. Vehicular access to/from the proposed lots would be provided by a proposed east leg
to the intersection of Park Ave N/N 31st St. A preliminary site plan is shown in Attachment B.
Project Trip Generation
The trip generation estimates for the proposed Jones Renton Short Plat project were based on methodology
documented in the Institute of Transportation Engineers (ITE) Trip Generation Manual, 10th Edition for Land
Use Code (LUC) 210 (Single Family Detached Housing).
The total new weekday daily, AM peak hour and PM peak hour trip generation estimates for the proposed
Jones Renton Short Plat project are summarized below in Table 1. Detailed trip generation estimates are
included in Attachment C. Trip credit for the existing single family home to removed is included in the trip
generation calculations.
Table 1
Jones Renton Short Plat – Trip Generation Summary
New Trips Generated
Time Period In Out Total
Weekday Daily 28 29 57
Weekday AM Peak Hour 2 5 7
Weekday PM Peak Hour 3 2 5
As shown in Table 1, the proposed Jones Renton Short Plat project is estimated to generate 57 new weekday
daily trips with 7 new trips occurring during the weekday AM peak hour (2 entering, 5 exiting) and 5 new
trips occurring during the weekday PM peak hour (3 entering, 2 exiting).
Trip Generation Assessment
Jones Renton Short Plat
TENW September 10, 2020
Page 2
Conclusions
Per City of Renton traffic impact analysis (TIA) guidelines, a TIA is required when the estimated vehicular traffic
generated from a proposed development exceeds 20 vehicles per hour in either the AM or PM peak periods.
Since the project is estimated to generate less than 20 net new peak hour trips, a TIA would not be required
for the proposed project.
If you have any questions, please feel free to contact me at (425) 250-5003 or chin@tenw.com.
cc: Bob Nix, Core Design Inc.
Wei Yang, Highland Advisory LLC
Attachments:
Trip Generation Assessment
Jones Renton Short Plat
ATTACHMENT A
Site Vicinity
Trip Generation Assessment
Jones Renton Short Plat
ATTACHMENT B
Preliminary Site Plan
Trip Generation Assessment
Jones Renton Short Plat
ATTACHMENT C
ITE
Land Use Size1 LUC2 In Out In Out Total
DAILY
Proposed Use:
Single-Family Home 5 DU 210 Ln(T) = 0.92Ln(X)+2.71 50% 50% 33 33 66
Less Existing Use:
Single-Family Home 1 DU 210 9.44 50% 50% -5 -4 -9
NET NEW DAILY TRIP GENERATION = 28 29 57
AM PEAK HOUR
Proposed Use:
Single-Family Home 5 DU 210 T = 0.71(X)+4.80 25% 75% 2 6 8
Less Existing Use:
Single-Family Home 1 DU 210 0.74 25% 75% 0 -1 -1
NET NEW AM PEAK HOUR TRIP GENERATION = 2 5 7
PM PEAK HOUR
Proposed Use:
Single-Family Home 5 DU 210 Ln(T) = 0.96Ln(X)+0.20 63% 37% 4 2 6
Less Existing Use:
Single-Family Home 1 DU 210 0.99 63% 37% -1 0 -1
NET NEW PM PEAK HOUR TRIP GENERATION = 3 2 5
Notes:
1. DU = Dwelling Units.
2. Land Use Code, trip rates and directional distributions based on ITE Trip Generation Manual, 10th Edition (2017).
Trip Rate or Equation
Directional Distribution2 Trips Generated