Enhanced visibility traffic signal

  • US 6,943,698 B2
  • Filed: 08/26/2003
  • Issued: 09/13/2005
  • Est. Priority Date: 07/13/1998
  • Status: Expired due to Term
First Claim
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1. A traffic control signal comprising:

  • a structure having traffic control indicia formed thereon;

    two or more LEDs mounted on the structure, each LED having an output light intensity of at least 6,000 millicandella, wherein each such LED is disconnectable without interrupting the operation of any other such LED, and wherein each such LED is individually mounted on approximately the same plane and separate from one another to provide discrete points of light as viewed by oncoming traffic when approaching said structure;

    a power source for providing direct current to the two or more LEDs mounted on the structure; and

    a control circuit for regulating a duty cycle of the two or more LEDs to operate at some desired blink frequency.

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