Ideally some 'low light camera' should warn you that in darkness far ahead there's 'something' unusual on the road and you will have time to react. Recently there was accident where truck with palm oil overturned on highway and first cars crashed into the truck because they were travelling too fast and only with low beam lights : https://www.youtube.com/watch?v=igX765Vw1fY

For example this camera module will be used soon in cars and it's really more sensitive than driver's eye : http://www.camera-module.com/download/sony-imx390-sensor-sel...