31 Mar '12, 7pm
[INTERESTING] Drivers generate #electricity with speed bumps #cars
Motorists in Roanoke, Virginia got the chance to test a novel kinetic energy recovery device just by driving over a big speed bump. As part of a real-world test of its MotionPower Express system, New Energy Technology installed an energy-recovering speed bump at the entrance to the busy Roanoke Civic Center during the weekend Roanoke hosted a gun show and circus. As cars crossed the speed bump, their tires depressed treadles that captured kinetic energy , which was converted into electricity. The company calls it a “rumble strip,” since it’s not as tall as the bright yellow behemoths dotting subdivisions and school zones. Whatever you call it, drivers who traversed the devices generated enough energy to power an electronic sign. Without the rumble strip, that energy would’ve been wasted as brake heat. MotionPower estimates an event like that held in Roanoke, where 580 cars...