Council approves permanent 'speed lumps' at Berkeley roundabouts after data and safety debate
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Summary
After staff presented 18 months of speed data showing the Berkeley/Chandler northbound approach as an outlier with higher approach and entry speeds and a localized crash pattern, council approved a contract to install permanent speed lumps designed to allow emergency access while calming traffic; risk staff supported the move citing pedestrian safety and liability concerns.
Staff presented speed and crash analyses for the Berkeley roundabout corridor showing that five of six roundabout approaches behaved similarly but the northbound approach at Berkeley & Chandler recorded higher approach and entry speeds (approach speeds about 25% higher and entry speeds about 12% higher than other intersections). Temporary speed cushions had reduced speeds briefly but driver behavior returned to prior levels after acclimation and removal of the temporary bumps.
Staff recommended permanent 'speed lumps' (a wider, segmented device designed to maintain emergency access and minimize noise) and a public‑works contract award. Public commenters split: some opposed additional traffic calming for noise and process reasons and urged neighborhood input; others said something must be done to reduce crashes. Risk management and staff cited liability concerns and the potential for catastrophic pedestrian injuries.
Council voted 4‑0 to award the contract and proceed with the permanent speed lumps; staff said the project is intended as a targeted, permanent safety improvement and will be managed to minimize noise and maintain emergency access.
