Sedgwick County staff outline data-driven plan to target crash hot spots, pursue grants for smart signals and speed signage

Lynn Packer, deputy director of public works and county engineer for Sedgwick County, told commissioners at an Oct. 14 staff meeting that county roads are overwhelmingly set to the statutory default speed and that new data access from the sheriffs office will let staff identify and review more minor and emerging crash clusters earlier.

Why it matters: the presentations from Packer, traffic engineer Tia Romat and Sheriff Jeff Easter outlined how better, more frequent crash reporting plus targeted low-cost treatments could reduce crashes on county and township roads that are transitioning from rural to commuter traffic. Commissioners pressed staff about the costs and equity of deploying flashing beacons, rumble strips, larger signage and other mitigations across multiple intersections.

Packer said K.S.A. 8-15-58 sets the statutory speed limit on county and township highways at 55 mph, and that the county has local authority to conduct speed studies to set other limits where justified. "We can go as high as 65 and we can take it down to 30," he said, but noted the county typically retains 55 mph because of driver expectations and the 85th-percentile speed measured on rural roads.

Romat described the countys current traffic-analysis practices and thresholds. She said the county has 91 fully paved…