Glossary Flashcards
(255 cards)
Absolute Signal
A fixed signal that must not be passed at STOP without the authority of the Signaller
Absolute Signal Blocking (ASB)
A method used by Qualified Workers to carry out work on track using controlled absolute signals set and kept at STOP
Access
A designated safe way into, along, across or out of a Rail Corridor
Access Provider
An organisation that provides and manages a rail Network and safe method of entry to that Network for Access Users
Active control (level crossing equipment)
A road or pedestrian level crossing where warning equipment warns road users and pedestrians about approaching rail traffic by devices such as flashing lights or barriers
Adjacent
Next to, near to, close to
Adjoining
In contact with, connected to
Advice
To give written or electronic notice, usually in advance, of planned activities
Affected signal
A signal not available for normal use
Airbrake
A braking system activated by change in air pressure
Aspect
The displayed pattern or position of lights or arms used to give a signal indication
Attended Location
A signalling location or block location that is controlled by a Qualified Worker either on-site or at a remote location
Audible Warming Device (AWD)
A device, such as a whistle, siren, horn or hooter, used to give warning
Automatic Signal
A signal that is normally controlled exclusively by the operation of track-circuits
Automatic Train Protection (ATP)
A safety system fitted to trains and to the track that warns of or enforces speed limits and stopping at some limits of authority
Authorise
To give formal written, spoken or signalled authority for an action
Authority
A generic term for permission. Formal authority name
Axle counter
Equipment used in Rail Vehicle Detection Territory to detect the presence of rail vehicles by counting the number of axles entering or leaving a location. They may be used to operate signalling or other infrastructure equipment
Axle counter territory
the portions of line where axle counters are used for the Rail Vehicle Detection system of Safeworking
Balloon loop
A portion of line that allows rail traffic to change direction of travel without change to the leading end
Bank locomotive
A locomotive provided at the rear of a train to assist it up a steep grade (bank)
Basic Block Working
A form of manual block working which does not require the issue of a Condition Affecting the Network (CAN) form
Bidirectional
Allowing for signalled movements of rail traffic in either direction between yard limits
Block
A portion of line with defined limits between which only one rail traffic movement is permitted at any one time