Emergency brake (train)

emergency brakecommunication cordemergency brakeshand brakeemergency brake applicationemergency brakinghandbrakeemergency braking systemcommunication cordsbrakes
On trains, the expression emergency brake has several meanings: * The maximum brake force available to the engine driver from the conventional braking system, usually operated by taking the brake handle to its furthest position, through a gate mechanism, or by pushing a separate plunger in the cab.wikipedia
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Flat spot

flat-spottedflat-spottingflat-spot
The engine driver or motorman will only use the emergency brake as a last resort, since it may cause damage; even with modern wheel slide protection, a train may develop wheel-flats, and the rails themselves can suffer profile damage.
Flat spots are usually caused by use of the emergency brake, or slip and slide conditions that causes wheels to lock up while the train is still moving.

Railway air brake

Airair brakeair brakes
The alarm chain in a passenger coach is designed to create a break in the continuity of the brake pipes (whether vacuum or air brakes), immediately resulting in a loss of brake pressure (or vacuum) and thereby causing the train brakes to be applied.
If it does fall to zero, (e.g., because of a broken brake hose) an emergency brake application will be made.

Pulled tail

open the emergency brake pipe tappull the air
Pulled tail is the colloquialism referring to the act of a guard or conductor of a railway to apply the emergency brakes when something unexpected has been noticed.

Dead man's switch

dead man's handlevigilance controldead man switch
Also, a red button and/or an emergency brake setting on the levers are provided in the driver's cab so the driver can manually activate the emergency brake; these can also be activated (like a dead man's handle) when the driver feels unwell or is incapacitated in trains without the EB reset switch.
If the driver is taken ill and releases this, the power will be shut off and an emergency brake application will be initiated to stop the train.

Wheel slide protection

Wheel Slip/Slide Protectionanti wheel-slip controlslide
The engine driver or motorman will only use the emergency brake as a last resort, since it may cause damage; even with modern wheel slide protection, a train may develop wheel-flats, and the rails themselves can suffer profile damage.

Third rail

3rd railthird-railelectrified
It is dangerous to stop in a tunnel if a fire develops; an emergency exit could lead to electrocution by the third rail (typically energized with 825 volts DC).

Fine (penalty)

finefinesfined
Because of possible serious problems, severe fines and/or imprisonment penalties are in place to deter people from activating the brake without good reason.

Chain

chainslink chainsteel chain
The alarm chain in a passenger coach is designed to create a break in the continuity of the brake pipes (whether vacuum or air brakes), immediately resulting in a loss of brake pressure (or vacuum) and thereby causing the train brakes to be applied.

Vacuum brake

Vacuumvacuum brakesvacuum braking
The alarm chain in a passenger coach is designed to create a break in the continuity of the brake pipes (whether vacuum or air brakes), immediately resulting in a loss of brake pressure (or vacuum) and thereby causing the train brakes to be applied.

Locomotive

locomotivesmixed trafficrailway locomotive
In most locomotives (in addition to a warning lamp or buzzer being sounded) the master controller undergoes auto-regression, with the notches falling to zero rapidly as the locomotive's motive power is switched off.

Conductor (rail)

conductorguardconductors
The guard may also notice the loss of brake pressure (although they may not know it is due to the pulling of the alarm chain) and is expected to apply their brakes immediately as well.

Finite-state machine

finite state machinestate machinefinite automata
The Regelung B009 NBÜ Rev 3.1 defines a set of nested statemachines in the chapter “Anlage 1: Phasen einer Zugfahrt“, reflecting a very wide range of usecases, including platforms, tunnels, etc. and is applicable for subways, trams, metros(S-Bahn), as it implements appropriate actions for all usecases occurring in rail transportation.

State of the art

state-of-the-artcutting edgecutting-edge
These statemachines represents the state of the art in Germany, it is highly recommended to be implemented or retrofitted to avoid the problems experienced at the S-Bahn Rhine-Neckar. The implementation of the S-Bahn's emergencybrake however does currently not reflect the state of the art in Germany, it has failed in practical use at least in one instance 2015, as a driver lost consciousness completely, but still accidentally triggered the vigilance device.

Rhine-Neckar S-Bahn

RheinNeckar S-BahnS-Bahn RheinNeckarRhein-Neckar S-Bahn
These statemachines represents the state of the art in Germany, it is highly recommended to be implemented or retrofitted to avoid the problems experienced at the S-Bahn Rhine-Neckar.

S-train

S-BahnS-trainsCopenhagen
It is allowed that the emergency brake can be reset, on S-Bahn vehicles (i.e. Classes 420, 423, 425, 480 or 481) it's allowed to only result in a display when used outside of platforms.

Dead-man's vigilance device

vigilance controlvigilance devicesalertness system
The implementation of the S-Bahn's emergencybrake however does currently not reflect the state of the art in Germany, it has failed in practical use at least in one instance 2015, as a driver lost consciousness completely, but still accidentally triggered the vigilance device.

DB Regio

DB Regio NordostDB Regio NRWDB Regio Südost
For DB Regio, the rules for the staff are given in Ril 494.

Indian Railways

Indian RailwayIndian Railway StationRailways
Chain-pulling is the act of pulling a cord that activates the train's emergency brakes to stop a train, whether for a genuine emergency or (often) illegally for someone to get on or off the train on the Indian Railway network.

Indian rupee

INRRs.
Penalties for misuse of this facility include a fine of Rs. 1,000 and/or imprisonment up to one year.

President of India

PresidentPresidentialIndian President
In an effort to improve the service, former President of India Dr. A. P. J. Abdul Kalam proposed an alternate method wherein a passenger in an emergency communicates with the guard and driver of the train.