over the past decades, a vast amount of scientific and practical experience has been gathered on the development, installation and operation of wim systems. however, these experiences often come in the form of technical scientific reports, which are typically not accessible or understandable to a novice user of wim systems or data. the international society for weigh-in-motion (www.is-wim) has developed a wim user guide providing basic, yet a comprehensive introduction to wim.