"SLOVENIAN EXPERIENCE OF USING WIM DATA FOR ROAD PLANNING AND MAINTENANCE"

Abstract

Over the last 3 years a network of 30 WIM sites has been established to cover all major routes of the main state road network with portable bridge WIM system. The first conclusion was that everywhere the real traffic loading was higher than if calculated according to the Specifications for traffic loading. We found that overloading is a big problem and with WIM system we can select locations and time period for static control with police. Consequently, a high-speed WIM enforcement procedure is being discussed. We applied tolerances of WIM system and sum of these fees would exceed 300 million Euros per year and it is approximately 30 times more than with present static control. Unfortunately, the present legislature in Slovenia does not allow yet using weigh-in-motion data for direct enforcement of the overloaded vehicles.