Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning

Full Title

Devices along the route controlled by interaction with the vehicle or train (detonators B61L5/20; operation of points or signals by passage of the vehicle B61L11/00, B61L13/00; operation of gates, or gates and signals, by approaching vehicle B61L29/18) > Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning