newsAug 27, 2026pending

Why the 85th Percentile Speed Limit Rule Is Failing Us

About this episode

Doug Dahl traces how a 1920s guess about driver behavior became a standard for setting speed limits, and why traffic engineers are now walking it back. A quarter of Washington's traffic fatalities in 2025 were pedestrians and cyclists, and the 85th percentile never accounted for them. https://www.clarkcountytoday.com/opinion/opinion-the-problem-with-setting-speed-limits-by-how-fast-people-drive/ #TrafficSafety #SpeedLimits #WashingtonState #Pedestrians #RoadSafety #Transportation #ClarkCounty #Opinion #TheWiseDrive #DougDahl

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Why the 85th Percentile Speed Limit Rule Is Failing Us

About this episode

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