Abstract: A measuring system for testing the position of a vehicle (1) includes a number of optical beacons (6 and 7), a sensing device (10) which is mounted on the vehicle (1) and which generates a position signal when sensing light reflected from a beacon (65 or 7), and a computer processing unit (14) for calculating, starting from the information received from the sensing device (10), the deviation of the vehicle relative to the desired position and driving direction of the vehicle. The sensing device (10) includes two cameras which are mounted on the vehicle, namely, a first camera which is directed approximately along the driving direction, and a second camera which is directed along a direction vertically upward or downward relative to the plane including the path of travel of the vehicle. At least one of the beacons (6) is placed in such a way that, during the motion of the vehicle approximately along the desires path, the beacon can be seen by the sensing device (10) along the driving direction of the vehicle.