DETERMINATION OF LOCAL SPEEDS AND VEHICLE LENGTHS WITH INDUCTION LOOPS - THEORETICAL CONSIDERATIONS WITH RESPECT TO MEASURING ACCURACY

ERFASSUNG LOKALER GESCHWINDIGKEITEN UND FAHRZEUGLAENGEN MIT INDUKTIONSSCHLEIFEN - THEORETISCHE UEBERLEGUNGEN ZUR MESSGENAUIGKEIT

IN PRACTICE THE MEASUREMENT OF LOCAL SPEEDS OF VEHICLES IN ROAD LANES OR CARRIAGEWAYS IS CARRIED OUT BY INDUCTION LOOPS BEDDED INTO TWO SECTIONS OF THE CARRIAGEWAY. THIS ALSO PERMITS THE LENGTH OF THE VEHICLE TO BE MEASURED. THE PRESENT THEORETICAL INVESTIGATION SHOWS THAT IT IS POSSIBLE IN PRACTICE TO MAKE STATEMENTS ON THE ACCURACY OF SPEED AND LENGTH MEASUREMENTS OF INDIVIDUAL VEHICLES OR VEHICLE GROUPS, SINCE INFLUENCES FROM THE DRIVE-DYNAMIC BEHAVIOUR AND THE GEOMETRIC DISPOSITION OF VEHICLE AND MEASURING ARRANGEMENT, WHICH CAN LEAD TO NEGATIVE OR POSITIVE ERRORS, CAN SUPERIMPOSE THEMSELVES OR CANCEL EACH OTHER OUT. IT IS APPARENT THAT INACCURACIES IN THE MEASUREMENT OF SPEED ARE OF SMALL MAGNITUDE; THE PROBLEM OF GREATER INACCURACIES IN THE MEASUREMENT OF VEHICLE LENGTHS IS REDUCED BY THE FACT THAT IN TECHNOLOGICAL PROBLEMS IT IS NORMALLY ONLY NECESSARY TO DISTINGUISH BETWEEN CARS AND OTHER VEHICLES.

Language

  • German

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Filing Info

  • Accession Number: 01289424
  • Record Type: Publication
  • Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
  • Files: ITRD
  • Created Date: Nov 21 2010 1:46AM