Bicycle infrastructure improvements have varied greatly across the country however many elements including separated cycle tracks, bike boxes and intersection marking improvements have become standardized. However these elements have not been formally adopted into the Manual for Uniform Traffic Control Devices (MUTCD) which serves as the universally accepted design book for traffic engineers. Last month a crucial committee gave approval paving the way for bicycle road standards to be included in the manual. More from Streetsblog:
Late last month, the National Committee on Uniform Traffic Control Devices gave its approval to 11 treatments, including these two bike lane configurations. Committee members also, as anticipated, approved bike boxes and bike signals, which had been considered “experimental,” as well as bike lane markings that continue through intersections.