With polyellipsoid headlamps the emitted light beams have a farther focus. Positioning a lens near it results in an exact light/dark boundary. The remaining light can then be uniformly distributed a little farther ahead on the roadway through an appropriate lens. Already shortly after exiting the ellipsoid, the bundled light beams are considerably smaller than with a paraboloid or free-form reflector. Only beyond the final lens (with a small effective reflex surface) does it grow.
For various load conditions of the vehicle, the headlamp level control should prevent blinding of oncoming traffic. The reflectors can be tilted vertically and adjusted by electric motors. If manually adjusted, these are set by a locator operated by the driver. With automatic headlamp level control, the assembly's position is detected by level sensors, and the control unit sends the corresponding signals to the electric motors.
The conventional turn signal control does not need to dispense with the comfort functions of modern vehicles. For example, the highway flashing is a useful extension in the retrofit area. Press the turn signal lever once and the turn signal flashes three times, for example to change the lane. This function can be easily retrofitted didactically with a module in this system.
Comfortable and intelligent control of the interior lighting is now included in all cars. So the interior lights e.g. directly turns off when the vehicle is started - whereas they are turned off slowly dimmed after some time when the door is closed without engine start. In this equipment all components including a boot lighting are included on a practice-oriented level.