Traffic and grade crossing control devices.
Title:
Traffic and grade crossing control devices.
Author:
National Research Council (U.S.). Transportation Research Board. Meeting (68th : 1989 : Washington, D.C.)
ISBN:
9780309049702
Publication Information:
Washington, D.C. : Transportation Research Board, National Research Council, 1989.
Physical Description:
v, 72 p. : ill. ; 28 cm.
Series:
Transportation research record, 1244
General Note:
Papers from the 68th Annual Meeting of the Transportation Research Board, Jan. 22-26, 1989, Washington, D.C.
Holds: Copies: