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ROUTE GUIDANCE POINTS THE WAY

AN EXPERIMENTAL ROUTE GUIDANCE SYSTEM IS NOW BEING TESTED BY THE BUREAU OF PUBLIC ROADS. A PART OF THIS SYSTEM IS THE HEAD-UP DISPLAY, WHICH PROJECTS ANY OF 16 DIRECTIONAL SYMBOLS ONTO THE CAR WINDSHILD. THE DISPLAY SYSTEM IS COMPRISED OF OPTICAL ELEMENTS, A SYMBOL SELECTION SUB-SYSTEM AND A LIGHT SOURCE MOUNTED INTEGRALLY WITH THE DASHBOARD, WHICH CAUSES THE DIRECTIONAL SYMBOL TO APPEAR AND SUPERIMPOSES IT ON THE ROAD SCENE. THIS DISPLAY IS FOCUSED AT INFINITY SO THAT THE DRIVER CAN OBSERVE BOTH THE ROAD SCENE AND THE SYMBOL SIMULTANEOUSLY WITHOUT REFOCUSING HIS EYES ON THE WINDSHIELD. A NATIONWIDE ROADSIDE COMPUTER NETWORK, AN IN-VEHICLE COMPUTER-DECODER AND THE WINDSHIELD DISPLAY SYSTEM WOULD CONSTITUTE THE EXPERIMENTAL ROUTE GUIDANCE. A DRIVER USING THE PROPOSED SYSTEM WOULD SELECT FROM A DIRECTORY A CODE SYMBOL FOR HIS DESTINATION. THE SYMBOL WOULD BE ENTERED INTO THE IN-VEHICLE COMPUTER-DECODER. AS THE VEHICLE APPROACHES AN EQUIPPED INTERSECTION, A CODED SIGNAL FROM THE COMPUTER-DECODER WILL BE PICKED-UP BY A LOOP ANTENNA BURIED IN THE ROADWAY AND FED INTO A ROADSIDE COMPUTER. THE COMPUTER THEN DECODES THE VEHICLE DESTINATION CODE AND TRANSMITS DIRECTIONAL INSTRUCTIONS BACK TO THE VEHICLE TO ACTIVATE THE WINDSHIELD DISPLAY. AN AUDIBLE "BEEP" WARNS THE DRIVER THAT INSTRUCTIONS ARE ABOUT TO BE GIVEN. SHOULD THE KOLLSMAN SYSTEM BE APPROVED BY THE BUREAU OF PUBLIC ROADS, INSTALLATION OF THE COMPUTER-DECODER IN THE CAR WOULD BE COST COMPARABLE TO THAT OF AUTOMOBILE AIR CONDITIONING OR A STEREO TAPE SYSTEM.

  • Supplemental Notes:
    • Vol 34, No 5, P 14, PHOT
  • Publication Date: 0

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  • Accession Number: 00227942
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 6 1970 12:00AM