Citation

Bleyl RL. Highw. Res. Rec. 1972; 414: 6-15.

Copyright

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

DOI

unavailable

PMID

unavailable

Abstract

A full-scale working model of a communications system was developed and employed in an empirical study to determine whether an in-vehicle driver aid could assist automobile drivers in making a smoother and safer approach to a traffic signal installation. The driver aid informed drivers that they were approaching a signalized location and gave them information about the signal indication that they would encounter on their arrivals at the traffic signal. It was determined from this analysis that the smoothness and safety of travel approaching a traffic signal installation could be improved by the use of a personal, dynamic, in-vehicle display. Even though drivers knew 1/3 mile in advance when they would be stopped by the traffic signal, they adjusted their speeds gradually and generally refused to travel at speeds that seemed to be unnaturally slow. A combination auditory and light display, activated approximately 500 ft in advance of the signal and having a personal, binary message (prepare to stop or plan to proceed), was recommended for further development.

Language: en

Keywords

TRAFFIC SIGNS, SIGNALS AND MARKINGS; AUTOMOBILE DRIVERS; TRANSPORTATION - Communication Systems