To slow motor-vehicle traffic with a speed bump or speed hump is one of the most effective approaches to improve the safety conditions of a parking lot, driveway or private lane. The traffic calming device can communicate to drivers to keep their speed to a minimum and thereby ensure the maximum safety. At Yuanda, we supply road safety accessories to various industries and events across the world. We boast a wide range of premium quality and affordably cheap speed bumps manufactured in different sizes and materials for sale.