@book{529618,
	author = {Witheford, David K. and Cunagin, Wiley D. and American Association of State Highway and Transportation Officials.},
	title = {Truck escape ramps /},
	publisher = {Transportation Research Board, National Research Council,},
	year = {[1992]},
	series = {National Cooperative Highway Research Program Synthesis of highway practice,},
	address = {Washington, DC :},
	note = {"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."}
}