In order to identify the driving condition so as to accordingly actuate the reflectors in the headlamp, several electronic components and sensors are necessary. The rotary angle sensor and gyroscopic angular acceleration sensor serve for the determination of the radius of the curve. The identification of the vehicle velocity and location plays an important role in the regulation of the headlamps. GPS can be used to determine the location of the vehicle. An electronic control unit takes over the actuation of the reflectors in the headlamp.
A system developed by Honda uses horizontally adjustable reflectors. The regulation of the reflectors takes place based on information involving the steering angle, vehicle velocity, switching- on the indicator lamps and the navigation system. This way, the reflectors of both headlamps can be turned 50° outwards and 20° inwards. The headlamp located inside the curve is hence turned over a larger angle. On a curved stretch of road, the steering angle and vehicle velocity are considered as input values. The reflectors react in advance to curves over the navigation system and turn in the direction of the curve.