Institute of Transport Studies, University of Leeds
Abstract
This working paper describes the initial stages of a tlfollow-uptl
study of the control of highly saturated signalised junctions in
Bangkok. The previous study has been reported in WP 220, WP 221
and WP 222.
This paper describes why particular junctions were chosen for
this second study and reports on the results of a survey designed
to produce the data input requirements for TRRL1s TRANSYT
program. TRANSYT is a method of finding the "bestt1 fixed-time
plans with which to co-ordinate the traffic signals in any
network of roads for which the average traffic flows are known.
While this paper deals with the data input requirements, such as
average flows, the results of an experiment comparing TRANSYT
recommended signal timings with Traffic Police control will be
described in a subsequent paper (WP 251)
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