Traffic-actuated control systems providing an advance signal to

Details Traffic-actuated control systems providing an advance signal to Traffic-actuated control systems providing an advance signal to

1979-10-22

1983-02-01

Groody, James J.

Communications: electrical

Selective

Having indication or alarm

340 37, 340 41R, G08G 1096, G08G 107

Patent

active

043718639

ABSTRACT:
An equipment is provided in connection with a traffic actuated controller to cut off the traffic actuation to shift the controller to a fixed time basis at a predetermined interval before the direction of traffic will change, and at the same time provide an advance signal for motorists to enable them to gauge their driving to save gasoline and to achieve greater safety. The green signal is continued during the first portion of this fixed interval until the yellow clearance interval begins. A specific feature resides in the provision of a circuit adjunct including an adjustable timer, which can be connected externally to existing controllers to cut off the traffic actuation and feed out the advance signal at the setting of one adjustable control and to terminate the green signal and start the yellow signal at the setting of another adjustable control.

REFERENCES:
patent: 2016220 (1935-10-01), Anderson
patent: 2057186 (1936-10-01), Freeberg
patent: 3150349 (1964-09-01), Wilcox

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