Calibration and quality management of WIM data

Abstract

Robust and effective tools for the accuracy and quality assessment of WIM data are essential to continuously prove the relevance and maintain the reliability of in-service WIM systems. The American ASTM Standard Specification for Weigh-in-Motion (WIM) Systems was initially used as the basis for the implementation and testing of WIMs in South Africa, followed by the European COST 323 Specification from approximately 2006. Since 2010 there has been a shift towards using a data-based method for retrospective calibration and for assessing the quality of WIM data in South Africa