Content deleted Content added
Sam Hocevar (talk | contribs) m spelling |
m Cowan rail crash |
||
Line 34:
The track relay itself has to be made as fail safe as possible, so for example a surge of current does not weld any contact of the relay with the relay in the up or green position.
Ideally, all track circuits should be indicated to a signal box, so that if they fail, there is some chance that the signalmen will notice sooner of later. The track circuits on [[Cowan rail crash|Cowan bank]] affected by sand on the rails were NOT indicated to any signalbox.
== Electrified Railways ==
| |||