An analysis of a measure system of weight-in-motion load vehicles

Abstract

There are bodies responsible for monitoring and controlling heavy loads of vehicles on the road system, some local reports indicate that overweight situations in those vehicles can cause damage to the roads. The purpose of this paper is to present a descriptive study of a system of weigh-in-motion for trucks in order to design a measurement protocol that conforms to the requirements of the International Recommendation OIML R-134. In order to achieve the objective some eccentricity and accuracy for static loads tests were performed using ten vehicles charging. The calculated error in these tests is within the tolerance range between -20 and +20 Kg, which determined that the protocol was adjusted to the requirements. With respect to weigh-in-motion, Repeatability (r) and Reproducibility (R) tests at three different speeds were performed. The variability was measured by applying the statistical method ANOVA, where the percentage of the ratio Repeatability (r) and reproducibility (R) was below 10%, which means that the measurement system used is acceptable.Keywords: weighting, repeatability, reproducibility, variability.