Citation

Hussain T, Saadawi T, Ahmed S. ITE J. 1993; 63(9): 38-45.

Copyright

(Copyright © 1993, Institute of Transportation Engineers)

DOI

unavailable

PMID

unavailable

Abstract

This study developed the basic elements of a system using infrared lasers and computerized correlation techniques to monitor and detect road vehicles. The system was demonstrated in the laboratory and in preliminary road tests that confirmed the basic capabilities of the system. The study results show that a product based on the system technology described here will be a cost effective device. The laser system is based on the use of laser sources and photodiode detectors that can be mounted above roadways to monitor traffic passage. The system does this by distinguishing between the reflection of the infrared laser light from the road surfaces and the interruption and changess in such reflections by the passage of traffic.