One of the most distraction of a driver during night driving in main roads are the heavy intensity of the head lamp of the opposite vehicle.
It may cause heavy casuality if the get distracted with the lamp of the vehicle coming from the opposite direction.
If a light proximity sensor is installed in front of the car, the senses the proximity of incoming light which increases the intensity of light while the car reaches to our vehicle, there is a rheostat connected to the ecu/ecm of the will diminish the driver side light, at the same time, ecm increases the intensity head lamp of the other side of our vehicle.
In effect, the head lamp of the driver side decreases and head of the side increases accordingly while the opposite approaches.
So that driver can easily look the bright light and can drive without any distraction.
When the opposite car pass by, the lights to normal position.