Portable traffic light

Details Portable traffic light Portable traffic light

2007-02-21

2009-12-15

Swarthout, Brent (Department: 2612)

Communications: electrical

Traffic control indicator

Portable

C340S907000, C340S916000

Reexamination Certificate

active

07633408

ABSTRACT:
The Invention is a center-of-intersection portable traffic light for emergency use. The portable traffic light features a cart with wheels, a telescoping light standard and one or more light assemblies. A preemption signal detector and traffic detector detect emergency vehicles and traffic, respectively. A control system controls the operation of the portable traffic light. A radio transceiver allows the portable traffic light to communicate with the other portable traffic lights. One of the portable traffic lights in a group acts as a master and controls operation of slave portable traffic lights. Any of the portable traffic lights in a group may act as master and any may act as slave.

REFERENCES:
patent: 4992788 (1991-02-01), Arndt
patent: 5001475 (1991-03-01), Scovin
patent: 5252969 (1993-10-01), Kishi
patent: 5805081 (1998-09-01), Fikacek
patent: 5986576 (1999-11-01), Armstrong
patent: 6118388 (2000-09-01), Morrison
patent: 7333029 (2008-02-01), Hammett
patent: 2001/0054970 (2001-12-01), Jones
patent: 2004/0178928 (2004-09-01), Butzer et al.
patent: 2005/0110660 (2005-05-01), Jacobs
patent: 2006/0012487 (2006-01-01), Gibson et al.

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