... . Extruded or co-extrud traffic barrier 1. One time forming, cold resistant, hot resistant, anti-impact, durable, With the water in it ,the ... , the crossing of the roads, railway, driveway, bridge in the traffic and toll station to warn the drivers, and reduce the ... film3.with the water in it, the buffer elasticity will be better, without the water, it can be moved easily. supply traffic barrier