Speed limits are set by drivers “voting with their feet.” That’s a problem for everyone else on the street.
Sources:
NACTO | City Limits
Los Angeles City Council | 2008 Speed Limit Report
Los Angeles Department of Transportation | 2018 Speed Limit Report
Brian Taylor and Yu Hong Hwang | Eighty-Five Percent Solution: Historical Look at Crowdsourcing Speed Limits and the Question of Safety
ITE | Speed Zoning Information A Case of “Majority Rule”
Hammond, et al. | Traffic Engineering and the Police
US Bureau of Public Roads | Accidents on Main Rural Highways, 1964
Research Triangle Institute | Speed and Accidents, Volume II
AAA Foundation for Traffic Safety | Impact Speed and a Pedestrian’s Risk of Severe Injury or Death
US FHWA | Methods and Practices for Setting Speed Limits
Learn more:
Controlled case study on speed limits in Seattle
Background on California’s speed limit laws
“Right of Way: Race, Class, and the Silent Epidemic of Pedestrian Deaths in America” by Angie Schmitt
Strong Towns explainer on the 85th Percentile Rule on roads