Citation

Fabre P, Maeder C. Proc. Int. Tech. Conf. Enhanced Safety Vehicles 1992; 1992: 429-433.

Copyright

(Copyright © 1992, In public domain, Publisher National Highway Traffic Safety Administration)

DOI

unavailable

PMID

unavailable

Abstract

This article describes the HESTIA traffic analysis station developed by the Electronique Control Company as part of the French "Weighing in Motion" research project. This provides real time information about traffic compositions, speeds, and flows. There are two piezo electric sensors and one induction traffic loop per traffic lane as well as an intelligent detector which analyses the data collected by the sensors. The following data are obtained for each vehicle: passage time; speed; classification; the weight of each axle; total weight; distance between each axle; vehicle length; and time since the preceding vehicle. Data are sent to the central control unit which can produce a range of statistical reports. These can be displayed in a number of graphical formats, including graphs and histograms. Examples provided include the distribution of number of axles by vehicle weight class; speeding by time of day (or hour) by specific classes of vehicle; and monthly distribution of heavy goods vehicles. Measurement accuracy has been found to be high, as is the repeatability.