QUALITY CONTROL OF WEIGH-IN-MOTION SYSTEMS USING STATISTICAL PROCESS CONTROL

Weigh-in-motion (WIM) data collected from continuously operating systems at test sections were reviewed. Data were processed using an extensive software quality check program, which was developed in joint effort with regions, agencies, and contractors. Data beyond specification limits are flagged as unusable, but this does not correct for system problems. One proposed methodology enhances the existing quality check program by monitoring data patterns. It corrects for calibration drift in distributions of gross vehicle weight of tractor semitrailers (loaded and unloaded). This method is labor-intensive, however. It is proposed that statistical process control be integrated with the existing quality check program. The review of WIM system data is summarized, and a statistical quality control methodology to facilitate post-processing of data flagged as unusable due to calibration drift is presented.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 72-80
  • Monograph Title: Pavement-vehicle interaction and traffic monitoring
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00715517
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 28 1996 12:00AM