The SMART Project - speed measurement validation in real traffic condition

In this paper an automatic validation system for speed measurement devices is described. The system was specifically designed to test speed within the SMART Project, an experimental survey on traffic monitoring devices led by ANAS, the Italian Road Agency. A matrix of infrared sensors was used to implement the system and allow accurate speed measurements under real traffic condition, without road restraints. Special reflecting devices were developed in order to separate single lane measurements and reveal vehicles crossing among them. A GPS in-vehicle speed measurement device with high accuracy was used to test and validate the system.