Citation

Bauer HJ. Highw. Res. Board bull. 1962; 330: 60-68.

Copyright

(Copyright © 1962, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

This report details the unusual, as well as the usual, design criteria specified for a discrete-bulb, matrix, speed command sign. Laboratory tests and various results are discussed. The interaction effects found among criteria meeting design specifications are pointed out. The speed command sign in use with the traffic pacer system in warren, mich., is the end product of the research. Specifications, sketches, and photographs, as well as research data, are included.