D.W. Harwood, et al., Safety Effectiveness of Intersection Left- and Right-Turn Lanes, Federal Highway Administration Office of Safety Research and Development, 2002, [1]Archived 2010-03-26 at the Wayback Machine
D.W. Harwood, et al., Safety Effectiveness of Intersection Left- and Right-Turn Lanes, Federal Highway Administration Office of Safety Research and Development, 2002, [1]Archived 2010-03-26 at the Wayback Machine