Visibility, rail-highway grade crossings, and highway improvement evaluation.

Bibliographische Detailangaben
Körperschaft:	National Research Council (U.S.). Transportation Research Board
Format:	Buch
Sprache:	English
Veröffentlicht:	Washington, D.C. Transportation Research Board, National Research Council 1991.
Schriftenreihe:	Transportation research record 1327.
Schlagworte:	Traffic signs and signals. Railroad crossings. Roads > Visibility.