Dynamic visibility of motor vehicles = La visibilité dynamique des voitures automobiles = Dynamische Sicht von Kraftfahrzeugen.

Various tests on the forward visibility of vehicles are conducted. It is desirable for safety toward pedestrians and motor cyclists to obtain wide forward visibility. On the other hand, it is desirable for drivers to set eye angular velocity, as the criterion value for the lower visibility below 2 rad-sec. To satisfy apparently mutually contradicted request, it is desirable to establish different visibilities for vehicles, particularly for coach type bus under different driving conductions.