Acton West Bridge: Tests on proposed arrangement of anti-flashover screen (RR-SAM-157)

At Acton West, Overbridge No. 29 carries the London Underground Limited (LUL) District and Piccadilly Lines over the Central Line and Railtrack lines. The latter include lines being electrified for the Heathrow Express system. In order to avoid the expense of immunising the LUL signalling against 50Hz traction current...