Administrative Rules Adopted by Bureaus Pursuant to Rule Making Authority (ARB)
TRAFFIC CAPACITY ANALYSIS FOR LAND USE REVIEW CASES
Administrative Rule Adopted by Bureau of Transportation Engineering & Development Pursuant to Rule-Making Authority
I. Administrative Rules for Traffic Capacity Analysis in Land Use Review Cases
For traffic impact studies required in the course of land use review or development, the following standards apply:
1. For signalized intersections, adequate level of service is LOS D, based on a weighted average of vehicle delay for the intersection.
2. For stop-controlled intersections, adequate level of service is LOS E. Level of service for two-way stop-controlled intersections is based on individual vehicle movement, and all-way stop controlled intersections is based on a weighted average of vehicle delay for the intersection.
3. An amendment or other land use application that requires analysis of traffic capacity and allows development that either (1) may cause a transportation facility to perform below the standards established in sections 1 and 2, or (2) adds vehicle trips to a facility that is already performing below the standards established in sections 1 and 2 may be approved if:
a. Development resulting from the amendment or other land use application will mitigate the impacts of the amendment or other land use application in a manner that avoids further degradation to the performance of the facility by the time of development through one or more of the following:
(i) the development is limited to result in no net increase in vehicle trips over what is allowed by the existing zoning; OR
(ii) one or more combination of transportation improvements or measures are imposed to mitigate the transportation impacts of the amendment or other land use application in a manner that avoids further degradation to the performance of the facility by the time of any development.
City Code Title and Chapter 17.88.050
Pursuant to Rulemaking Authority under City Code Title and Chapter 3.12
Filed for inclusion in PPD December 16, 2003.
Amended by Director of Bureau of Transportation May 26, 2010.