yellow metal type killer with high quality

One way speed hump allow access in one direction only, thereby detering wrong way traffic or unauthorised entry or exit. Each 1 meter module has nine independent retracting teech. When a vehicle approaches from the correc direction the teeth simply retract into the hump allowing fee passage. When approached from the unauthorised direction the teeth are locked in the up position thereby denying access. Each one meter module comes complete with all fixings ready to install.