Citation

Campbell EW, Keefer LE, Adams RW. Highw. Res. Board bull. 1959; 230: 112-125.

Copyright

(Copyright © 1959, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

A method of relating traffic speed to volume was developed based on the idea that speed on urban route sections was controlled largely by the ability to move through signalized intersections. A further hypothesis was that if traffic were random on urban route sections, and thus described by a poisson type distribution, then the arrivals in any given time interval could be determined by any given hourly rate of flow. The results of the research work following the hypothesis described are presented. It is shown how the randomness of traffic was tested, and the estimations of average speed are described.