EQUIPMENT FOR THE AUTOMATIC MEASUREMENT OF HEADWAY, SPEED AND WHEELBASE OF VEHICLES

AN APPARATUS HAS BEEN DESIGNED TO MONITOR AUTOMATICALLY THE SPEED AND HEADWAY OF VEHICLES IN TRAFFIC LANES AT EQUIPPED BUT UNATTENDED ROAD SITES. MEASUREMENTS CAN BE MADE DAY OR NIGHT AND IN ALMOST ALL WEATHER CONDITIONS AND LEVELS OF TRAFFIC FLOW. THE EQUIPMENT ALSO PROVIDES A MEASURE OF WHEELBASE FOR CLASSIFICATION AND VEHICLE SPACING CALCULATION PURPOSES. SIGNALS FROM VEHICLE DETECTORS AT THE REMOTE SITES ARE SENT OVER G.P.O. LINES VIA A DATA LINK TO A CENTRAL PROCESSING UNIT AND DATA, IN THE FORM OF THE ELAPSED-TIME PERIODS TOGETHER WITH THE TIME OF DAY, ARE RECORDED ON PUNCHED PAPER TAPE FOR SUBSEQUENT ANALYSIS BY COMPUTER. THE DATA TRANSMISSION EQUIPMENT USED IS BRIEFLY DESCRIBED. SOME FURTHER WAYS IN WHICH THIS INFORMATION MIGHT BE USED, ARE INDICATED. /RRL/A/

  • Supplemental Notes:
    • Rrl Rept Lr 140, 22 PP, 6 FIG, 2 TAB, 4 PHOT, 5 REF
  • Corporate Authors:

    MINISTRY OF TRANSPORT, LONDON (UK)

    ,    

    Road Research Laboratory /UK

    ,    
  • Authors:
    • Harms, P L
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00227762
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 13 1970 12:00AM