MS-WIM systems optimisation method

The application of WIM data is wide. Indeed, a statistical analysis of those data allows us to calculate traffic aggressivity and monitoring the traffic evolution year after year. WIM data can also be used for overloaded vehicle screening, which makes the enforcement much more effective. Finally, with accurate estimation of static axle loads, MS-WIM could meet automatic enforcement purposes. Using a powerful truck/road dynamic interaction simulation software allowed to generate a large impact forces database. The choice of the influencing parameters for the achievement of this database aimed to be representative of the real in situ environment (pavement, mechanical, and driving characteristics). This paper investigates an optimised MS-WIM array design, and particularly in term of sensor spacing specification.