Clearing ballast away
To remind you of the exact location cleared for the short circuit bar
To prevent contact with the thrid rail
Push down swiftly and firmly
To avoid arc eye and burns from sparks
When instructed by the signaller
Red
Emergency Telephone
When someone is in danger of contact with the conductor rail
When there is excessive arcing or fire on a train
During an emergency evacuation
In any other circumstances shown in company instructions
Where there is a guard board around the conductor rail
Where there is a yellow plastic shroud below the conductor rail
On fourth rail electrified lines (except East Putney)
Where flammable/hazardous goods are involved