In New York, smart street design helped the city have its safety and its speed, too. 

A great article on Mother Jones about “level of service” and how California is a state that is leading the charge against it. “Level of Service” is the argument against implementing bike lanes for fear that less road space for cars will cause more traffic and delays. Mother Jones explains a new report by the New York City Department of Transportation which shows car traffic can be maintained while increasing rider safety.

http://www.motherjones.com/environment/2014/09/adding-bike-lanes-reduces-traffic-delays-new-york-city