A device for driving assistance including an output unit for outputting driving instructions to a driver, in particular for parking into a parking space in which the driving instructions provide the driver with a driving zone situated between two trajectories inside which the driver may freely select a path into the parking space. Aqueous dispersions of these polypoly complexes are useful for forming transparent electrically conductive organic layers comprised of such complexes. A handle region defined by an elongated shape is adapted for gripping. The stop tab is disabled when the fork bolt is moved to the latch position. Such fluid rotary injection valve systems can be useful in connection with rotational equipment and particularly for high speed rotational equipment operating with differential internal and external process pressures. The apparatus eliminates the need for a keyboard and a mouse to operate a computer.