A motor vehicle has at its front end, a pair of passing or dipped beam headlights
and a separate pair of cruising or main beam headlights. The passing headlights
and cruising headlights produce, respectively, a regulation, short range, dipped
passing beam and a regulation, long range, main or cruising beam. A control unit,
when the vehicle is negotiating a bend in passing beam mode, causes at least one
of the cruising main beam lights to emit an additional bend beam for lighting into
the bend. This bend beam increases the light intensity generally in the direction
of the bend.
