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Council discusses traffic‑calming criteria, directs staff to provide speed studies
Summary
Chandler briefed council on speed bumps, humps, tables and other traffic‑calming measures and proposed objective criteria (example threshold: average/fiftieth‑percentile speed ≥30 mph on posted 25 mph roads, excluding emergency routes and steep slopes); council asked staff to circulate recent speed‑study data for Cedar Hills Drive and to develop a standards toolbox.
Council held a discussion—no vote—on traffic‑calming devices and a proposed set of objective criteria for when the city should consider measures such as speed humps, raised crosswalks, chicanes or road diets.
Chandler summarized options and explained staff has compiled roughly 170 historic speed studies over the past decade. He recommended criteria that would exclude emergency‑vehicle routes and steep slopes, require a minimum average (fiftieth‑percentile) speed threshold (staff discussion settled on using 30 mph as an example trigger for 25‑mph posted streets), and account for traffic volume, driveway frequency and proximity to pedestrian activity. Councilmembers discussed neighborhood buy‑in, enforcement (police presence and tickets), marking and nighttime visibility for existing bumps, and concerns about impacts to snowplows and emergency response.
Council requested that staff distribute the most recent Cedar Hills Drive speed‑study data and return with a proposed formal toolbox of criteria and implementation steps for council consideration. Chandler said staff will provide the data and can place future candidate locations into the proposed criteria for council review. There was no motion or vote on policy changes at the meeting.
