Incursion Collision Avoidance System For Vehicle Traffic Control

Abstract

A system to identify junctions of restricted areas to approaching vehicles, including at least one warning signal generator adapted to transmit the warning signal into areas traversed by the vehicles approaching the restricted areas, a receiver in each of the vehicles receiving the transmitted warning signals when the vehicle approaches one of the restricted areas, and an alarm responsive to the warning signal, which produces an alarm signal detectable by a vehicle operator.

What is claimed is: 
     
         1 . A system to identify restricted areas to approaching vehicles, comprising
 a warning signal generator adapted to transmit said warning signal into areas traversed by said vehicles approaching said restricted area,   a receiver in each of said vehicles to receive said transmitted warning signals when said vehicle approaches one of said restricted areas, and   an alarm responsive to said warning signal to produce an alarm signal detectable by a vehicle operator.   
     
     
         2 . The warning system of  claim 1  wherein said warning signal is an RF signal. 
     
     
         3 . The warning system of  claim 1  wherein said receiver includes a data voice recorder for recording events occurring in the receiver. 
     
     
         4 . The warning system of  claim 1  wherein said restricted area includes a junction and said antenna is located adjacent to said junction. 
     
     
         5 . The warning system of  claim 1  wherein said warning signal generator is battery powered. 
     
     
         6 . The warning system of  claim 1  wherein said restricted area is part of a construction site, military training area, or airport. 
     
     
         7 . The warning system of  claim 1  wherein said warning signal receiver is powered by an electrical system of said vehicle. 
     
     
         8 . The warning system of  claim 7  wherein said warning signal receiver is connected to said electrical system by an electrical lighter socket in the vehicle. 
     
     
         9 . The warning system of  claim 1  wherein said alarm generates an auditory warning and a visual warning when said warning signal is detected. 
     
     
         10 . A method of identifying restricted areas to approaching vehicles, comprising
 transmitting a warning signal,   receiving said warning signal by said vehicles when said vehicle approaches one of said restricted areas,   recording said warning signal in a data voice recorder in said vehicle, and   producing an alarm signal in response to said warning signal.   
     
     
         11 . The method of  claim 10  wherein said warning signal is an RF signal. 
     
     
         12 . The method of  claim 10  including transmitting said warning signal at a junction in said restricted area. 
     
     
         13 . The method of  claim 10  wherein said transmitting said warning signal is performed by a GPS transceiver. 
     
     
         14 . The method of  claim 10  including powering said warning signal generator by a battery. 
     
     
         15 . The method of  claim 10  including powering said warning signal receiver by the electrical system of said vehicle. 
     
     
         16 . The method of  claim 10  including generating an auditory warning and a visual warning when said warning signal is detected. 
     
     
         17 . The method of  claim 16  wherein said visual warning is presented on a rear-view mirror of the vehicle. 
     
     
         18 . A method of identifying restricted areas to approaching vehicles, comprising
 generating a warning signal,   transmitting said warning signal through a buried inductive cable extending around at least a portion of said restricted area, to said vehicle,   receiving said warning signal by said vehicles when said vehicle approaches one of said restricted areas,   recording said warning signal in a data voice recorder in said vehicle, and   producing an alarm signal in response to said warning signal.   
     
     
         19 . The method of  claim 18  wherein said recording in said data voice recorder is adapted to be read by a computer. 
     
     
         20 . The method of  claim 18  wherein said recording is stored in said data voice recorder for a predetermined period of time.