Traffic light timer

Details Traffic light timer Traffic light timer

1995-02-02

1996-05-21

Swarthout, Brent A.

Communications: electrical

Traffic control indicator

Indication of time remaining before change of phase

340925, 340944, G08G 1096

Patent

active

055193900

ABSTRACT:
A traffic light timer is provided that provides a visible and accurate warning that a traffic light signal is about to change. The time remaining before the change is displayed in numeric form on a display and visibly counts down the seconds remaining. In one configuration of the invention, the display is alphanumeric. In another configuration the display is graphical allowing for the display of free form icons. The icon library is contained on an easily replaced icon memory module.

REFERENCES:
patent: 3076178 (1963-01-01), Hastings
patent: 3234506 (1966-02-01), Hines
patent: 3320585 (1967-05-01), Hines
patent: 3408623 (1968-10-01), Wagner et al.
patent: 4200860 (1980-04-01), Fritzinger
patent: 4827258 (1989-05-01), Evans
patent: 4914435 (1990-04-01), Gould et al.
patent: 5136287 (1992-08-01), Borenstein
patent: 5150116 (1992-09-01), West
patent: 5241307 (1993-08-01), Bidault et al.

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