may be connected to the respective detection means of the vehicle 61 in particular the data collection means 90 of the on board unit 1 may be connected to the vehicle 39 s speed meter or gps module 40 or any similar satellite position system such as glonass or galileo accelerometer 41 mileage meter or odometer 42 and other sensors 44 the gps module 40 preferably receives and decodes the gps signal and outputs the current position preferably in terms of latitude and longitude on the basis of such position data and the change thereof different other parameters may be determined such as vehicle speed or travel route however such parameters like vehicle speed and traveled distance also may be determined by other means such as a speed meter or a mileage meter of the vehicle the odometer 42 reports the odometric distance driven and may be a virtual sensing means calculating the driven distance from the gps data or a physical sensor depending on the desired functions of the on board unit the data collection means 90 may by connected to other sensors 44 such as a battery sensor providing for battery voltage and or the vehicle battery connection status or an ignition sensor providing for the ignition status of the engine wherein in general such other sensors may be used to retrieve information on the status of the vehicle and parameters reflecting such status that are not reported via the vehicle bus according to fig1 such detection units or sensors may be.