The American Association of State Highway and Transportation Officials (AASHTO) has released the fourth edition of its Guide for the Development of Bicycle Facilities, last published in 1999.

According to AASHTO, the guide “provides information on how to accommodate bicycle travel and operations in most riding environments. It is intended to present sound guidelines that result in facilities that meet the needs of bicyclists and other highway users. Sufficient flexibility is permitted to encourage designs that are sensitive to local context and incorporate the needs of bicyclists, pedestrians, and motorists.”

The guide is currently available for pre-order through AASHTO and is expected to ship in early June. The new edition of guide will also be available as a download.