Trainwire

Some articles on trainwires, trainwire:

Electro-pneumatic Brake System On British Railway Trains - The Next Generation
... Positions on the brake handle are Release - Trainwires 10,11 and 12 energised Step 1 - Trainwire 10 de-energised, 11 energised, 12 energised Step 2 - Trainwire 10 energised, 11 de-energised, 12 energised ... Emergency - All three Trainwires de-energised and earthed ...