06759948 is referenced by 68 patents.

A railroad collision avoidance system and method are disclosed that utilize impulse radio technology to effectively warn a person when there is a locomotive in their vicinity. In one embodiment, the railroad collision avoidance system includes a transmitting impulse radio unit coupled to a locomotive and a receiving impulse radio unit coupled to a vehicle. The transmitting impulse radio unit operates to transmit an impulse radio signal towards the vehicle when the locomotive is a predetermined distance from a railroad crossing. Upon receiving the impulse radio signal, the receiving impulse radio unit makes sure the person operating the vehicle is informed about the potentially dangerous situation. Several embodiments of the railroad collision avoidance system and method are disclosed all of which operate to warn a person when there is a locomotive in their vicinity.

Title
Railroad collision avoidance system and method for preventing train accidents
Application Number
9/960820
Publication Number
6759948 (B2)
Application Date
September 21, 2001
Publication Date
July 6, 2004
Inventor
Mark D Roberts
Huntsville
AL, US
William T Grisham
Huntsville
AL, US
Agent
William J Tucker
US
Assignee
Time Domain Corporation
AL, US
IPC
B60Q 1/00
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