The internationally recognized Trajectography Test and Reference Vehicle (VERT) is an instrumented vehicle dedicated to Intelligent Transport Systems (ITS). As such, it enables GNSS, inertial, video and digital signals to be acquired and replayed, for scientific research, expertise and geolocation demonstration purposes. As standard, it is equipped with a Trajectory Reference Measurement (TRM) system to measure the error committed by the systems studied, and to qualify the innovative algorithms developed by the Gustave Eiffel University. The reference trajectories produced have an accuracy ranging from centimetres in open environments, to decimetres in difficult conditions such as city centers and tunnels.