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CalBike Insider: Design Guidance on Class IV Bikeways

Summary by calbike.org
Caltrans issues Design Information Bulletins (DIBs) that set the parameters for specific types of facilities on the state highway network. DIB-89 provides guidance on how to build Class IV bikeways. Class IV lanes are on-street bikeways separated from car traffic by some type of physical barrier. CalBike’s analysis of Caltrans data found that, although protected bikeways have been legal in California since 2015, Caltrans added almost no Class IV…
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calbike.org broke the news in on Monday, June 9, 2025.
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