Citation

Roberts AW. Highw. Res. Board bull. 1972; 414: 42-49.

Copyright

(Copyright © 1972, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

Diagrammatic signs offer inherent improvements in road sign communication. Motorists are provided with more complete information on exits without additional words. The findings of this study show an improvement in exiting maneuvers after diagrammatic signs were installed and after lane lines were added to the diagrams on northbound i-287 at the left exit to westbound us-22. It is recommended that further evaluation of diagrammatic signing be carried out for a variety of exit configurations and for a whole series of interchanges. Serious consideration should be given to including the diagrammatic concept in new standards.

Language: en