No. HT-808 HT-808-1 Size 500*600*30mm 500*600*50mm End Size 200*600*30mm 250*600*50mm Weight 17.5kg/m 25kg/m End Weight 3.75kg The Rubber Speed Hump can lower vehicle's speed when the car pass by, but at the same time the driver have no feeling of being hit. In the daytime, its warning color which is yellow and black is eye-catching. Besides, the bump is installed with a light reflection that can reflect the bright light in the evening, which can attract drivers' attention and to enhance the security.