Grade crossings, devices, visibility, and freeway operations
Title:
Grade crossings, devices, visibility, and freeway operations
Author:
National Research Council (U.S.). Transportation Research Board.
ISBN:
9780309031172
Publication Information:
Washington, D.C. : National Academy of Sciences, 1980.
Physical Description:
iv, 49 p. : ill. ; 28 cm.
Series:
Transportation research record ; 773
Series Title:
Transportation research record ; 773
Added Corporate Author: