Abstract
We propose a new type variable hump system that can control its height in order to improve characteristic of conventional rigid humps and to realize characteristic of an ideal hump. There is a problem that the controlling effect of the speed of the vehicle is controlled by the specification of the passed vehicles, because conventional humps are a rigid body. The height of this hump is varied by adjusting the resisting force of a semi-active hydraulic shock absorber according to the kind of vehicles and their passing speeds. Using a simple dynamic model of the hump system, we evaluated effectiveness of this hump system with a semi-active hydraulic shock absorber.
