Traffic signal control method

Details Traffic signal control method Traffic signal control method

2005-08-30

2005-08-30

Trieu, Van T. (Department: 2636)

Communications: electrical

Traffic control indicator

Intersection normally under local controller

C340S916000, C340S918000, C340S919000, C340S921000

Reexamination Certificate

active

06937161

ABSTRACT:
In traffic signal control for setting a green light time to a value between the lower limit time and the upper limit time in real time depending on a traffic volume sensed by vehicle sensors Sa, Sb, and so forth, the upper limit time Gmaxis set longer with an increase of a traffic volume on an access road corresponding to a phase in question (Steps T8and T9). This arrangement is effective for use at an intersection where a traffic volume in one direction is far heavier than in any other direction, and thereby makes it possible to forestall the occurrence of traffic jam (FIG.6).

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