Actuated digital pretimed traffic controller

Details Actuated digital pretimed traffic controller Actuated digital pretimed traffic controller

1981-12-01

1984-05-15

Brigance, Gerald L.

Communications: electrical

Traffic control indicator

Plural intersections under common central station control

340916, 364436, G08G 107

Patent

active

044491166

ABSTRACT:
In a digital pretimed traffic controller of the type used to control traffic signals at an intersection during a selected signal cycle there is provided an improvement wherein a demand signal, such as created by a detector, is directed to the controller. The demand signal is used for selecting one of a plurality of interval sequences within a fixed time cycle background. In this manner, the digital pretimed controller is compatible with electro-mechanical controllers and still retains traffic actuation versatility. The controller also is constructed to assure that the overall cycle length and the programmable individual interval times are identical before the particular timing plan can be accepted by the controller.

REFERENCES:
patent: 3763466 (1973-10-01), Howard et al.
patent: 3764973 (1973-10-01), Muramatu et al.
patent: 3886496 (1975-05-01), Spilo et al.

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