Grand Rapids car-bicycle crashes at 10-year low (November 19th, 2018)

A record 83 percent of drivers complied with the rule, an ordinance passed in 2015. The data was collected using radar devices attached to bicycles, which volunteer cyclists tested over six months.

The ultrasonic device calculates the distance between a vehicle and bike during a passing situation, said Mark Schlutt, a Grand Rapids cyclist who rode for the National Highway Transportation Safety Administration research team.

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