Bell codes, buzzer codes or Communication Signal Appliance codes entail a series of bells or buzzers used on
passenger trains
In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often know ...
for communication between the
driver and
guard
Guard or guards may refer to:
Professional occupations
* Bodyguard, who protects an individual from personal assault
* Crossing guard, who stops traffic so pedestrians can cross the street
* Lifeguard, who rescues people from drowning
* Prison ...
.
Great Britain and India
All codes, except 3—2—1, must be acknowledged by repeating the code received.
United States
In the United States, these are known as Communication Signal Appliance codes.
{, class=wikitable
!Signal
!Meaning
[{{cite web , url=http://www.amtrakengineer.net/NORAC90408.pdf , archive-url=https://web.archive.org/web/20110723013320/http://www.amtrakengineer.net/NORAC90408.pdf , url-status=dead , archive-date=23 July 2011 , format=PDF , title=Communicating Signal Appliance , year=2008 , publisher=Northeast Operating Rules Advisory Committee , page=29 , accessdate=9 April 2011 ]
, -
, _, , When running, stop at once.
, -
, _, , When standing, apply or release brakes.
, -
, o o, , When standing, start.
, -
, o o o, , When standing or running backward, back up two car lengths.
, -
, o o o, , When running forward, stop at next passenger station.
, -
, o o o o, , When standing, brakes have applied and released on rear car. Brake test completed.
, -
, o, , When spotting, switching, or making up trains, prepare to stop.
See also
*
Whistle code
A train whistle or air whistle (originally referred to as a steam trumpet) is an audible signaling device on a steam locomotive, used to warn that the train is approaching, and to communicate with rail workers. Modern diesel and electric locomot ...
s - used by locomotives to communicate with signal boxes
References
Passenger rail transportation in the United States
Passenger rail transport in the United Kingdom
Passenger rail transport in India
Rail transport operations