Using the instrument display and night sensitive (IR?) front positioned video camera, show the road ahead clearer and further than what is seen by the naked eye.
Some systems also help identify pedestrians and animals in the driving path by highlighting the obstruction.
Systems have been a mixed bag with manufacturers introducing systems to fanfare and later dropping them due to poor demand. Part of this may be due to early technical limitations and cost. Few vehicles offer these options. One is the 2013 Audi A6, as the primary part of a package of features for $5650.
(voting combined from a close duplicate that has been removed)