ON THE USE OF TEST-DRIVER DATA TO REPLACE SPOT SPEED STUDIES

THE PURPOSE IS TO INDICATE THE VALIDITY OF A VEHICLE-BASED MEASUREMENT SYSTEM EMPLOYING CONTINUOUS TEST DRIVER SPEED HISTORIES TO EVALUATE USER AVERAGE AND DIFFERENTIAL SPEEDS OVER SECTIONS OF HIGHWAY. THE TEST-DRIVER DATA IS CORRELATED WITH ACTUAL USER AVERAGE SPEEDS AT MANY SITES, AND WITH DIFFERENTIAL EFFECTS OF USERS BASED ON PAST STUDIES REPORTED IN THE LITERATURE. THE RESULTS INDICATE HIGH CORRELATION, BOTH IN PREDICTING ABSOLUTE USER SPEEDS AND SPEED-HORIZONTAL CURVATURE RELATIONS DEVELOPED IN 1957. THE EFFICIENCY OF TEST-DRIVER DATA OVER SPOT SPEED CHECKS BECOMES GREAT ONLY WHEN A LARGE NUMBER OF HIGHWAY SECTIONS ARE TO BE ANALYZED. TYPICALLY, THE TEST-DRIVER APPROACH COULD BE USED IN MAINTAINING A CONTROL OVER CONDITIONS INVOLVING LONG MILEAGE SECTIONS, WHILE SPOT SPEED CHECKS WOULD STILL BE MOST EFFICIENT IN EXAMINING ISOLATED TROUBLE SPOTS.

  • Authors:
    • Herrin, G D
    • Neuhardt, J B
  • Publication Date: 1972-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00228181
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 28 1972 12:00AM