Lane keeping systems

Available literature was mostly found on Lane Departure Warning (LDW) systems while no relevant study was identified on the effect of Lane Keeping Assistants (LKA).
The available literature mostly describes the benefit of LDW systems by identifying the target population (share of crashes that could have been addressed by a LDW system). Little is known however about the number of cases where LDW would have been effective. It is questionable if LDW can restore the attention of a driver that has fallen asleep in time to avoid an unintentional lane departure.