Traffic control devices and rail-highway grade crossings.
Contributors: National Research Council (U.S.). Transportation Research Board.
Series: Transportation research record ;; 1114
Publisher: Transportation Research Board, National Research Council
Published: 1987
Place of publication: Washington, D.C
Language: eng
Number of pages: 155
Subjects: Traffic signs and signals.; Railroads -- Crossings.
Notes: Includes bibliographies.