American Association of State Highway and Transportation Officials (AASHTO), "Guide for the Development of Bicycle Facilities," 3rd Edition, 1999
American Association of State Highway and Transportation Officials (AASHTO), "Guide for the Planning, Design, and Operation of Pedestrian Facilities, 1st Edition," 2004
Commonwealth of Massachusetts, "Driver's Manual," Chapter 4, "Rules of the Road," April 2008
Dodge-Jayne, "Building Better Bicycling - A Manual for Improving Community Bicycling Conditions," MA Highway Department, 1994
