A headlight for providing a light beam adapted to illuminate the verge of the
road.
From the rear towards the front along a horizontal reference axis are an elliptical
reflector, a light source, and a convergent lens element. The reflector and light
source are mounted for pivoting movement, to provide a movable optical axis with
respect to the longitudinal axis. The lens is fixed. A lateral portion arranged
in an angular sector is swept by the movable optical axis, and is designed to cause
the light beam to be modified as a function of the offset angle defined by the
movable optical axis with the longitudinal axis.
