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Staff to accept HSIP funding for citywide speed study; plan to evaluate arterial speeds and local 25→20 mph implementation
Summary
Public works staff said the city secured HSIP grant funding for a citywide speed study that will collect data on arterial and collector streets and develop an implementation plan for reducing local-street speed limits from 25 to 20 mph where appropriate; study expected to complete in 2025.
Public works staff briefed the committee on an HSIP-funded, citywide speed study. Staff said the project has two main components: data collection and analysis for arterial and collector streets (including where speed reductions could be effective, or where additional design changes are needed), and a local-streets implementation plan to reduce posted limits from 25 to 20 miles per hour where appropriate.
Staff said the speed study is identified in the local road safety plan and that the city previously budgeted $200,000 for related work; the HSIP funding would support the citywide study. The study will focus data collection on arterials and collectors (for example, 140th Avenue NE) and will not collect raw data for every local street; instead, staff will prepare a plan and implementation approach for local street speed reductions.
Staff estimated the study’s original target completion year as 2025, although timing could shift due to staffing and other priorities. Council members asked whether the study could ever recommend raising speeds in some locations where engineering suggests posted limits are inconsistent with design; staff replied that design and posted speeds should align and the study could prompt design changes to achieve target speeds.
