Method and apparatus for signalling motorists and pedestrians wh

Communications: electrical – Selective – Having indication or alarm

Patent

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Details

116 63R, 340 41R, G08G 1096, G08G 1095

Patent

active

042008603

ABSTRACT:
An apparatus of electromechanical or solid-state character is provided for intermittently blinking the traffic control signals at street and road intersections to inform motorists and pedestrians at intervals during each period the lights are red or green as to the time remaining before the lights are changed to green or red to indicate a change in direction of traffic. The apparatus includes an interrupter switch in the power line of the traffic lights and a timer for the interrupter switch cycled by a pulse from the controller of the traffic lights each time the lights are changed. During each cycle of the timer the interrupter switch is operated at intervals to provide distinguishing signals each differing by one blink from the other. For example, the traffic lights may be blinked once when 30 seconds remain before the lights will change and twice at a rate of 3 to 6 per second when 15 seconds remain. By this signalling, motorists are enabled to gauge their speed as they approach street and road intersections to save gasoline and to drive with maximum safety, and pedestrians can know in advance when they have sufficient time to walk across at an intersection with safety.

REFERENCES:
patent: 2016220 (1935-10-01), Anderson
patent: 2057186 (1936-10-01), Freeberg
patent: 2817724 (1957-12-01), Skidgel

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