Measures of effectiveness, railroad-highway grade crossings, and visibility
Subtitle: 9 reports prepared for the 54th annual meeting of the Transportation Research Board.
Series: Transportation research record ;; 562
Publisher: TRB
Published: 1976
Place of publication: Washington
Language: eng
Number of pages: 106
Subjects: Railroads -- Crossings.; Traffic signs and signals.; Roads -- Visibility.; Highway-railroad grade crossings.
Notes: Includes bibliographical references.