ACQUIRING TRAFFIC DATA BY IN-MOTION WEIGHING

An electronic weighing system referred to as weigh-in-motion (WIM) has been developed which obtains wheel weights, axle spacing, and speed of vehicles operating in a normal traffic stream. The accuracy of the WIM system has been evaluated in a statistically designed field experiment which consisted of comparing wheel weights measured by wheel-load weighers, platform scales, and the in-motion weighing system. The experiment utilized a variety of vehicles representing several different vehicular classes and a number of different vehicular loads. The possible effects of vehicular speed and pavement profile were also examined. The study indicates that the in-motion weighing technique can provide adequate static weight, speed, andd classification data for traffic survey purposed without the need for specially constructed weighing sites. All hazards to traffic and survey personnel would be eliminated without any delay and expense to the road user. /ASCE/

  • Availability:
  • Supplemental Notes:
    • Presented at the July 15-19, 1974, ASCE-EIC/RTAC Joint Transportation Engineering Meeting, Montreal, Quebec, Canada.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  USA  10017-2398
  • Authors:
    • Machemehl, R B
    • Lee, C E
    • Walton, C M
  • Publication Date: 1975-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00128743
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11716 Proceeding
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM