In modern vehicles ambient light sensors are used to automatically turn the headlights on in low light situations. Other body control lighting features can include: automatic 'dipping' headlights; delayed 'off' headlights; and headlight warning alarms.
Proximity sensors are mounted in the front or rear bumpers. The control unit determines the distance between the sensor and an obstacle by measuring the time taken for sound waves to leave and return to the sensor.
Reflective displays use a mirror embedded in the dash so the instruments appear further away than they actually are. The driver’s focal point changes less when looking from the road to the instruments and back.
