Emergency traffic signal device

Details Emergency traffic signal device Emergency traffic signal device

2005-02-01

2005-02-01

Crosland, Donnie L. (Department: 2636)

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

C340S906000, C340S815470, C340S691600

Reexamination Certificate

active

06850169

ABSTRACT:
An emergency traffic signal device comprising a plurality of elongated display units that are affixed to the traffic signal around the three traffic lights thereon and comprise arrays of LEDs capable of displaying graphic directional instructions in the form of moving chevrons or arrows that indicate the need to move laterally to the side of the road in response to preemptive signals detected by a controller. The display units are mounted on channel-shaped bodies to be retrofitted to the signal, or are installed as original equipment on new signals, preferably in a continuous band around the traffic lights. Alternatively, message display panels, also responsive to the controller, are applied to one or both of the upper and lower sides of the traffic signal, and additional arrays of LEDs are provided in the positions of two of the traffic lights to emit standard color lights during normal operation and to display graphic directional symbols in response to emergency signals.

REFERENCES:
patent: 3257641 (1966-06-01), Campana et al.
patent: 5014052 (1991-05-01), Obeck
patent: 6072407 (2000-06-01), Shin

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