SIDE WALL WITH ROAD SLOPE INDICATING FUNCTION

摘要

PROBLEM TO BE SOLVED: To enable a driver of a vehicle running through a long tunnel or an expressway to intuitively recognize a degree of slope or a change in slope in the wall surface of a side wall facing on the road. SOLUTION: A pattern 3 visually recognized by the driver of the vehicle corresponding to a degree of slope or a change in slope is applied to the wall surface 1a of the side wall 1.