Bridgestone will present and demonstrate its new Tyre Pressure Monitoring System (TPMS) for commercial vehicles at the eSafety Challenge 2011 near Vienna on 31st May. The patented system features a valve with a built-in radio frequency unit that simply screws onto the valve stem. Its unique ultra low power usage allows for a much smaller construction than that of conventional TPMS sensors. A passenger car version integrated to a snap-in valve will also be demonstrated.