Device Shows Bus Location
LONDON Transport plans to try an experiment never before attempted anywhere in the world, and if successful for regular use, will give the main office of a bus transportation company a “picture” of the city’s moving buses.
Each bus will carry on its roof a coil of wire through which will pass an alternating current. At certain fixed points a wire will be suspended across the road where the bus will pass. As it passes, it induces a current in the wire which in turn records the passing on the “clock.”