The Transportation Research Board's Transit Cooperative Research Program (TCRP) Report 175, "Guidebook on Pedestrian Crossings of Public Transit Rail Services," presents an array of engineering treatments designed to help improve pedestrian safety at crossings of light rail, commuter rail, and streetcar lines.

In addition to addressing key pedestrian safety issues associated with public transit rail services, the Guidebook reviews pedestrian crossing issues associated with the National Environmental Policy Act of 1969 (NEPA) and the Americans with Disabilities Act (ADA).  The report reviews commonly used decision flowcharts for determining pedestrian treatments at rail crossings and presents information on 34 such treatments, grouped into eight appropriate categories.  The report also includes four case studies that examine specific decisions with respect to pedestrian safety at public transit rail crossings.

The Guidebook is supplemented by a final research report, "TCRP Web-Only Document 63: Treatments Used at Pedestrian Crossings of Public Transit Rail Services," which describes the methods and research activities that informed the development of TCRP Report 175