Remote controlled portable traffic signals

Details Remote controlled portable traffic signals Remote controlled portable traffic signals

1996-11-27

1999-05-04

Hofsass, Jeffrey A.

Communications: electrical

Traffic control indicator

Portable

3409081, 340917, 340539, 116 63P, G08G 1095

Patent

active

059008261

ABSTRACT:
A portable traffic control comprising two display units, each responsive to a transmitter's radio signals, each display unit comprising a "stop" and a "go" lamp, the light from all lamps viewable by a person positioned between the display units. The system is optionally equipped with an audio warning means for detecting vehicles that ignore a display unit stop light, the display units each preferably employing a simplified circuit with a servo motor mechanism.

REFERENCES:
patent: 2401940 (1946-06-01), Lange
patent: 2829362 (1958-04-01), Terrill
patent: 2941185 (1960-06-01), Mullikin
patent: 3046521 (1962-07-01), Cantwell et al.
patent: 3729706 (1973-04-01), Hein
patent: 3867718 (1975-02-01), Moe
patent: 4032883 (1977-06-01), Gibson
patent: 5437318 (1995-08-01), Martel

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