Evaluation of accuracy of weigh-in-motion systems in Alberta

Weigh-In-Motion (WIM) systems can collect a variety of traffic data for moving vehicles. The accuracy of six piezoelectric WIM systems installed in Asphalt Concrete (AC) pavements at six highway locations in Alberta was investigated in a five-year verification experiment, which compared the WIM measurements to predetermined axle weights of a test truck. While the WIM systems accurately characterized the speed and dimensions of the test truck, 56, 43, 37, and 34 percent of their weight measurements for single steering, tandem drive and load axles, and Gross Vehicle Weight (GVW), respectively did not comply with the American Society for Testing and Materials (ASTM) E1318 requirements. Outlier analysis revealed that an error limit of 50 percent can be considered as the threshold for the WIM random errors. Mechanistic Empirical Pavement Deign Guide (MEPDG) was used to investigate the effect of the WIM errors in measuring the test truck's axle weights on flexible pavement design for a typical section in Alberta. While WIM errors in the range of ±20 and ±30 (corresponding to the majority of WIM errors in Alberta) did not affect the AC design, error magnitudes of ±50 and ±100 percent affected the AC thickness by more than 100 percent.

• Record URL:
  https://doi.org/10.6135/ijprt.org.tw/2014.7(3).169
• Record URL:
  http://www.ijprt.org.tw/reader/pdf.php?id=404
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Supplemental Notes:
  • Abstract used by permission of publisher.
• Authors:
  • Farkhideh, Naser
  • Nassiri, Somayeh
  • Bayat, Alireza
• Publication Date: 2014-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Maps; References; Tables;
• Pagination: pp 169-177
• Serial:
  • International Journal of Pavement Research and Technology
  • Volume: 7
  • Issue Number: 3
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Accuracy; Asphalt concrete pavements; Error analysis; Mechanistic-empirical pavement design; Vehicle weight; Weigh in motion; Weight measurement
• Geographic Terms: Alberta (Canada)
• Subject Areas: Data and Information Technology; Highways; Motor Carriers; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01528362
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 17 2014 9:03AM