Citation

Cronje WB. Transp. Res. Rec. 1983; 905: 80-83.

Copyright

(Copyright © 1983, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The existing methods for the optimization of isolated fixed-time signalized traffic intersections are applicable either to undersaturated stationary conditions or to oversaturated conditions. As far as is known, no model exists that is applicable to all conditions. A model is developed for the optimization of fixed-time signalized intersections that is applicable to undersaturated as well as to oversaturated conditions. In the model, the macroscopic approach to traffic flow is used. Although it is not so accurate as the microscopic approach, values are obtained for delay and number of stops that are accurate enough for practical purposes and that use much less computer time. Macroscopic simulation is then approximated by the geometric probability distribution. In this case also, values for delay and number of stops are obtained that are accurate enough for practical purposes and that use much less computer time. Consequently, the geometric probability distribution model is recommended for the optimization of fixed-time signalized traffic intersections.

Language: en

Keywords

ROADS AND STREETS - Intersections; TRAFFIC SURVEYS; OPTIMIZATION