23.52.008

A. Applicability. The requirements of this Subchapter II apply to proposed new development as described in Table A for 23.52.008. This type of impact analysis is not required for development located within a regional center, or major transit service area, or that is subject to SEPA environmental review per Chapter 25.05 . Table A for 23.52.008 Development location and size that requires a transportation impact analysis in a SEPA-exempt development Development location Gross square feet of non-residential non-retail uses in a stand-alone non-residential use development 1 Gross square feet of non-residential non-retail uses 1 in a mixed-use development 2 Within regional centers and major transit service areas 3 Exempt Exempt Within portions of urban centers that exclude major transit service areas 3 40,001 to 65,000 40,001 and greater Outside regional centers, urban centers, and major transit service areas 3 40,001 to 65,000 40,001 and greater Footnotes to Table A for 23.52.008 1 Not including gross floor area dedicated to accessory parking. 2 The mixed-use development must contain at least one dwelling unit, not including caretaker's quarters or live-work units. 3 Major transit service areas are locations within 2,640 feet walking distance of a stop served by a major transit service, as shown on a map adopted by Director's Rule. B. Transportation impact analysis required. Applicants for proposed development shall submit with the development permit application an analysis of potential transportation impacts that may result from the proposed development, including but not limited to impacts on the roadway system, transit system, and bicycle and pedestrian networks. The transportation impact analysis must contain the following: 1. Number of additional daily and peak hour vehicular trips; 2. Likely distribution of project traffic and effects on traffic operations; 3. Availability and expected usage of transit; 4. Existing vehicular, pedestrian, and bicycle conditions, including access and connections to transit and bicycle facilities; and 5. Collision history. C. Impact mitigation 1. Based upon the results of the transportation impact analysis, the Director may condition permit approval, as a Type I decision, to mitigate or prevent transportation impacts. 2. Required mitigation may include, but is not limited to: a. Changes in access; b. Changes in the location, number, and size of curb cuts and driveways; c. Provision of transit incentives, including transit pass subsidies; d. Bicycle parking, and shower facilities for bicycle commuters; e. Signage, including wayfinding; f. Improvements to vehicular, pedestrian, and bicycle facilities or operations including signalization, turn channelization, right-of-way dedication, street widening, pedestrian and bicycle facilities improvements, and lighting; g. Transportation management programs; h. Parking management strategies including, but not limited to, unbundling parking from building-space leases, reserved parking spaces for vanpools, and reduction in the amount of parking to be provided; i. Participation in a transportation mitigation payment program or transportation management association, where available; and j. Support for enhanced public transportation service, ride-sharing programs, demand management, transportation systems management strategies, or other similar strategies, either as part of or separately from a transportation management program or transportation mitigation payment program. (Ord. 127392 , § 9, 2026; Ord. 127375 , § 85, 2025; Ord. 126157 , § 41, 2020; Ord. 125757 , § 4, 2019; Ord. 125291 , § 36, 2017; Ord. 124378 , § 53, 2013; Ord. 123939, § 13, 2012)