THE EFFECT OF SELECTED OPERATING PARAMETERS OF VEHICLE HEAD LAMPS ON SIGHT DISTANCE AND GLARE

The size and shape of vehicle headlamps for night driving have an influence on the sight distance and glare. Manufacturing tolerances cause brightness outside the bright - dark boundaries. Changes in the dipping of these limits as a result of various loading conditions of a vehicle and its influence on the sight distance and glare are discussed as well as principles of the light adjustment of headlamps. In the case of manual adjustments, a compromise between adjustment accuracy and operation is necessary. For cars with a higher variation in the type of loading, only automatic systems are of use in practice. (TRRL)