Glossary of Terms


Navigate the Glossary either via the interactive search or filter by alphabet or number.

RA
Right Away' Indicator


Disciplines:
Abbreviated term for 'right away indicator'.
Alternative
Disciplines: Operations
RAC
Railway Association of Canada


Disciplines:
Abbreviation for 'Railway Association of Canada'.
Overseas
Disciplines: ALL Disciplines
Radio Electronic Token Block (RETB)
A signalling system used mainly on single lines, where an electronic token is transmitted between the controlling signal box and train.

Obsolete
Disciplines: Train Control
Rail
The rolled steel section used to guide wheelsets of rolling stock. The most common rails are Tee head which is the Australian Standard. Rail is described by weight per unit length, i.e. kilograms/metre (kg/m) commonly reduced to kg and pounds per yard (lb/yd) commonly reduced to lb.

Preferred
Disciplines: Infrastructure
Rail Anchor
A fastening which is attached to the foot of the rail and against the sleeper to transfer longitudinal forces to the sleepers and in turn to the track structure. Rail anchors are utilised to resist rail creep and expansion and contraction in long rail.

Preferred
Disciplines: Infrastructure
Rail Base Plate
A rail support plate between the rail and bearer at crossingwork assemblies utilising resilient rail fastenings. The plate may be level or taper.

Preferred
Disciplines: Infrastructure
Rail Bond
A cable fixed across a break or joint in one rail, or between two rails to provide a path for traction return current or track-circuits.

Preferred
Disciplines: Electrical, Infrastructure
Rail Brace
A cast or fabricated component which supports the rail in a vertical position.

Preferred
Disciplines: Infrastructure
Rail Buckle
Misalignment of the rails generally caused by high rail stresses due to high temperatures.

Preferred
Disciplines: Infrastructure
Rail Cascaded
Rail which has been removed from one track and relayed on another track.

Preferred
Disciplines: Infrastructure
Rail Combined Wear
Rail wear where both side and top wear are significant. Combined wear may be calculated by determining the loss of cross-sectional area as a percentage of the original area of the head.

Preferred
Disciplines: Infrastructure
Rail Contact Stress
Stress in rail head from local deformation in the region of the contact with the wheel. The magnitude and depth of the maximum stress is dependent on the tangential and normal forces and also the curvature of the wheel and rail surfaces. High rail contact stresses will accelerate the deterioration of the rail through a mechanism termed rolling contact fatigue.

Preferred
Disciplines: Infrastructure
Rail Corridor
The land on which a railway is built; comprising all property between property fences, or from the nearest rail in each direction for the distance specified by the Rail Infrastructure Manager.

Preferred
Disciplines: ALL Disciplines
Rail Defect
A surface or internal defect in the rail which may affect the serviceable life of the rail.

Preferred
Disciplines: Infrastructure
Rail Fastenings
Devices for holding rail to sleepers or to a base plate, which is in turn held to the sleeper. Direct fixation of rail to the timber sleeper is by dog spike, lock spike, or screw spike against the edge of the rail foot, either with or without a baseplate. Indirect fixation is achieved by resilient or elastic fastenings holding rail to the baseplate and one of the spike types holding the baseplate to the sleeper. With concrete or steel sleepers elastic fastenings hold the rail directly to the sleeper through inserts or shoulders. The main elastic fastenings in use on Australian railways are 'fist', Pandrol, 'safelock and 'trak-lok'.

Preferred
Disciplines: Infrastructure
Rail Flange
The base or foot of the rail

Preferred
Disciplines: Infrastructure
Rail Gauge Corner
The section of the crown of the rail on the side towards the track centreline which has a slope of between 10 degrees and 50 degrees to the line joining the highest points on the two rails.

Preferred
Disciplines: Infrastructure
Rail Infrastructure Manager
In relation to rail infrastructure of a railway, means the person who has effective control and management of the rail infrastructure, whether or not the person-
(a) owns the rail infrastructure; or
(b) has a statutory or contractual right to use the rail infrastructure or to control, or provide, access to it.

Preferred
Disciplines: ALL Disciplines
Rail Level
The level of the top of the rail in track. On a curve the inner or low leg is used for measurements.

Preferred
Disciplines: Infrastructure
Rail Motor
Self propelled passenger rail vehicle.

Preferred
Disciplines: Rolling Stock
Rail Network
Refer to Railway Network.

Alternative
Disciplines: ALL Disciplines
Related Term: Railway Network
Rail Operator
A generic term that refers to an accredited operator of rolling stock.

Preferred
Disciplines: ALL Disciplines
Rail Pad
The bearing between the rail and the sleeper.

Preferred
Disciplines: Infrastructure
Rail Safety Regulator
The National Rail Safety Regulator or an Acting National Rail Safety Regulator

Preferred
Disciplines: ALL Disciplines
Rail Safety Work
‘Rail safety work’ is defined in section 8 of the Rail Safety National Law

refer:  http://www.onrsr.com.au/operations/legislation

 

Preferred
Disciplines: ALL Disciplines
Rail Safety Worker
A Competent Worker who has carried out, is carrying out, or is about to carry out, rail safety work.

Preferred
Disciplines: ALL Disciplines
Rail Seat
The area on top of the sleeper on which the rail sits extending between the field and gauge shoulders.

Preferred
Disciplines: Infrastructure
Rail Side Wear
Rail wear that normally occurs in the high leg of curved track and has only a minimal amount of top wear. Side wear can be measured either by determining the width of the rail 16mm below the running surface, or the loss of head area as a percentage of the original head area.

Preferred
Disciplines: Infrastructure
Rail Surface Defect
A rail surface condition, for example corrugation, checking and rust, which does not permit an adequate ultrasonic test.

Preferred
Disciplines: Infrastructure
Rail Temperature
The temperature of rail as recorded on the shade side of the rail web at the time of working.

Preferred
Disciplines: Infrastructure
Rail Top Wear
Rail wear that normally occurs on the top running surface of the rail in tangent track or the low legs of curves. Usually has a minimal side wear component.

Preferred
Disciplines: Infrastructure
Rail Traffic
Trains and track vehicle or vehicles travelling in the network.

Preferred
Disciplines: ALL Disciplines
Rail Traffic Crew
Competent Workers responsible for the operation of rail traffic.

Preferred
Disciplines: ALL Disciplines
Rail Traffic Integrity
The requirements that must be met for rail traffic to be deemed to be fit for purpose and able to enter and travel in the Network.

Preferred
Disciplines: Rolling Stock, Operations
Rail Traffic Working Advice
A form used to provide information to rail traffic crews regarding other rail traffic movements.

Preferred
Disciplines: Operations
Rail Transport Operator
An organisation that has an agreement with a Rail Infrastructure Manager (RIM) to enter and use a rail Network.
means-
(a) a rail infrastructure manager; or
(b) a rolling stock operator; or
(c) a person who is both a rail infrastructure manager and a rolling stock operator;

Preferred
Disciplines: ALL Disciplines
Rail Vehicle
Vehicle that operates on or uses a railway track for the carriage of passengers or freight and includes a train, carriage and wagon. Term Rail Vehicle generally used where the context requires, or is enhanced by, a differentiation between rail and road vehicles.

Preferred
Disciplines: ALL Disciplines
Rail Vehicle Classification
A four character group indicating the owner, type of vehicle and operating characteristics.

Preferred
Disciplines: Rolling Stock, Operations
Rail Vehicle Classification Check Letters
A letter determined by special formula, which is included in all vehicle identification numbers as a suffix.

Preferred
Disciplines: Rolling Stock, Operations
Rail Vehicle Detection Territory
The portions of line where the system of safeworking relies on track circuiting or axle counters.

Regional
Disciplines: Train Control
Rail Workplace
A place where rail safety work is carried out, and includes any place where a rail safety worker goes, or is likely to be, while doing rail safety work.

Preferred
Disciplines: ALL Disciplines
Rail-connect
To connect overhead wiring supply to the traction return rail to ensure the immediate discharge of electricity if the overhead wiring becomes live.

Preferred
Disciplines: Infrastructure, Electrical
Rail, Asymmetrical
An irregular shaped rail of low height and thick web, which is used primarily for the manufacture of switches for tangential turnout points. The short length of the switch rail permits resilient rail fastening of the gauge side of the stock rail.

Preferred
Disciplines: Infrastructure
Rail, Closure
A length of rail shorter than standard length which is used to join sections of longer rails or to join turnout components.

Preferred
Disciplines: Infrastructure
Rail, Common
A rail in third rail or dual gauge trackwork which is utilised by traffic of both gauges.

Preferred
Disciplines: Infrastructure
Rail, Control Cooled
The process of controlling the cooling rate of rolled rail to eliminate hydrogen inclusions.

Preferred
Disciplines: Infrastructure
Rail, Head Hardened
Rail which has had the head heat treated after rolling to increase the hardness. The hardness increase is generally in the order of 80 Brinell hardness points.

Preferred
Disciplines: Infrastructure
Rail, Plain Carbon
Rail typically used by railways. It contains carbon in the order of 0.6-0.8% and manganese of 0.6-1.0%.

Preferred
Disciplines: Infrastructure
Rail, Primary
Unwelded rail, comprising standard length and approved short length rails as supplied by the manufacturer.

Preferred
Disciplines: Infrastructure
Rail, Recycled
Refer to Rail.

Alternative
Disciplines: Infrastructure
Related Term: Rail
Rail, Running
A rail on which the wheel is supported and guided.

Preferred
Disciplines: Infrastructure
Rail, Serviceable
Previously used rail which is in a suitable condition for reuse in trackwork.

Preferred
Disciplines: Infrastructure
Rail, Transposed
Rail which has been removed from track and relayed, generally on the same track, but with the running edge transposed, i.e. former field side placed on gauge side.

Preferred
Disciplines: Infrastructure
Railguard
A deflector mounted in front of the leading wheels of a vehicle to deflect small objects from the rails.
Also known as 'lifeguards' or 'guard-irons'.

Preferred
Disciplines: Infrastructure
Railway
railway means a guided system, or proposed guided system, designed for the movement of rolling stock having the capability of transporting passengers or freight (or both) on a railway track with a gauge of 600 millimetres or more, together with its rail infrastructure and rolling stock.

Preferred
Disciplines: ALL Disciplines
Railway Employee
An employee or contractor of an owner or operator who performs railway safety work and includes a person who performs railway safety work on a voluntary or unpaid basis.

Alternative
Disciplines: ALL Disciplines
Refer to Rail Safety Worker
Alternative
Disciplines: ALL Disciplines
Related Term: Rail Safety Worker
Railway Infrastructure
Facilities other than rolling stock necessary for a railway to operate safely including railway track, associated track structures, over- or under-track structures, supports (including supports for railway equipment or items associated with the use of a railway), tunnels, bridges, stations, platforms, train control systems, signalling systems, communication systems, electric traction infrastructure, buildings, workshops and associated equipment.

Preferred
Disciplines: ALL Disciplines, Infrastructure
Railway Network
A railway system within Australia owned or managed by a Rail Infrastructure Manager. Some railway networks are connected to others and permit interoperability. Other railway networks are not connected to others.

Preferred
Disciplines: ALL Disciplines
Railway Operation
The construction and maintenance, or the construction or maintenance, of infrastructure of a railway;

Preferred
Disciplines: ALL Disciplines, Infrastructure
The operation or movement, or causing the operation or movement, by any means, of any rolling stock on a railway, including operating a railway service if the operator of the service operates or moves, or causes the operation or movement of, rolling stock;
Preferred
Disciplines: ALL Disciplines, Operations
The construction and maintenance, or construction or maintenance, of rolling stock.
Preferred
Disciplines: ALL Disciplines, Rolling Stock
Railway Safety Audits
A system of regular audits to verify whether railway safety activities comply with the planned arrangements and to determine the effectiveness of the railway safety system.

Preferred
Disciplines: ALL Disciplines
Railway Service
A passenger service or a freight service; or
the service of providing (or providing and operating) railway infrastructure for another industry participant.

Preferred
Disciplines: ALL Disciplines
Railway Track
Refer to Track.

Alternative
Disciplines: ALL Disciplines
Related Term: Track
Railway Track Signal
A device attached to a rail that explodes on impact, used to attract attention of rail traffic crews and workers.

Preferred
Disciplines: Operations
Railway Tramway Crossing
A crossingwork assembly at which railway and tramway tracks intersect.

Regional
Disciplines: Infrastructure
Rake
Vehicles, usually not formed as a train, moved as a unit during shunting and marshalling.

Legacy
Disciplines: Operations
Ramp (flange)
That portion within a flangeway where the wheel flange makes initial contact and is gradually elevated to the plateau.

Preferred
Disciplines: Infrastructure
RCS
Remote Controlled Signalling


Disciplines:
Re-enterable Cable Joint
A form of cable joint housing which is not permanently sealed, permitting subsequent access to the joint interior without destruction of the housing or cable.

Regional
Disciplines: Electrical
Re-enterable Cable Route
A cable route where the cables can be added or removed from the route e.g. surface troughing or underground conduit.

Regional
Disciplines: Electrical
Ready To Start Indicator
A non-preferred term for 'right away indicator'.

Non-preferred
Disciplines: Operations
Ready To Start Plunger
A non-preferred term for 'right away plunger'.

Non-preferred
Disciplines: Operations
Realignment
The process of re-establishing the track to the design horizontal and vertical alignment for tangents and curves.

Preferred
Disciplines: Infrastructure
Rear
Alternative term for Approach To.

Overseas
Disciplines: Train Control
REB
Relocatable Equipment Building


Disciplines:
Abbreviated term for 'relocatable equipment building'.
Overseas
Disciplines:
Reballasting
The process for replacing or adding additional ballast to the existing ballast.

Preferred
Disciplines: Infrastructure
Reciprocal Locking
The provision of locking between functions to ensure that conditions cannot be broken down, that is if 1 locks 2, then 2 must lock 1. This form of locking is provided automatically by mechanical interlocking.

Overseas
Disciplines: Train Control
Refer Converse Locking.
Alternative
Disciplines: Train Control
recording
Collecting data and documenting an event (rail occurrences or within the rail corridor)

Preferred
Disciplines: ALL Disciplines
Red (aspect)
Displayed by a colour light signal, indicates to the driver to stop at that signal.

Preferred
Disciplines: Train Control, Operations
Red Bond
A traction return cable which, if disconnected, could result in either the bond itself or the equipment to which it was connected rising to a dangerously high potential. The bond is identified by red colour.

Overseas
Disciplines: Electrical
Red Card
A card placed in the waybill clip of a wagon to notify all concerned that that particular vehicle is NOT fit for traffic and must be repaired prior to returning to traffic.

Alternative
Disciplines: Rolling Stock
Refer to'defect card'.
Alternative
Disciplines: Rolling Stock
Reduced Overlap
An overlap that is shorter than the minimum permitted length of a full overlap, where the permitted approach speed is below a specified level which still allows an unrestricted approach to a signal at danger.

Overseas
Disciplines: Train Control
Reefer
U.S. slang for a refrigerated wagon. A box wagon with insulated walls, roof and floor, with or without provision for the application of refrigeration equipment. Sometimes used to refer to refrigerated containers.

Overseas
Disciplines: Rolling Stock
Reflective Delineators
Reflectors or reflective decals / sheeting.

Preferred
Disciplines: Rolling Stock
Refrigerated Wagon
A box wagon with insulated walls, roof and floor, with or without provision for the application of refrigeration equipment.

Preferred
Disciplines: Rolling Stock
Refuge Loop
A running line with entry and exit ends connected to a main line, that is used to hold a train or track vehicle to allow other rail traffic to cross or pass.

Preferred
Disciplines: Train Control, Operations
Regulating
The mechanical process of forming the ballast to the standard track profile.

Preferred
Disciplines: Infrastructure
Regulator
Refer Rail Safety Regulator.

Alternative
Disciplines: ALL Disciplines
Relay
An electro-mechanical switching device used in many types of signalling systems.

Overseas
Disciplines: Electrical, Train Control
Relay Interlocking
A power interlocking area where the interlocking between lever functions is achieved electrically by interdependent relay circuits. The signaller operates the levers on a relay interlocking control unit.

Regional
Disciplines: Electrical, Train Control
Relay Interlocking Control Unit
An interlocking control unit, which is fitted with electrical switches called 'miniature levers' (either pushbutton, toggle key or rotary switch type). The miniature levers do not directly operate the points and signals. Instead, they operate interdependent electrical relays which check that there are no conflicting movements set before the required points and signals are operated.

Regional
Disciplines: Electrical, Train Control
Release
A device that allows a Competent Worker to take trackside control of points or signals by the removal of locking on a function, for example, the removal of route locking or the unlocking of a function such as a ground frame.

Preferred
Disciplines: Train Control, Operations
Release Speed
The calculated speed of a train approaching a signal at which the signal is permitted to clear to a less restrictive aspect.

Overseas
Disciplines: Train Control
Releasing Switch
An electric lock located adjacent to a ground frame which when energised enables a switch to be turned to release a key to unlock the ground frame. The releasing switch is interlocked with the signalling.

Regional
Disciplines: Train Control
Reliability
The ability of an item of equipment or a system to perform a required function under stated conditions for a stated period of time or at a given point in time.

Preferred
Disciplines: ALL Disciplines
Relief Point
A nominated crew change location.

Preferred
Disciplines: Operations
Relief Train
Is a breakdown or other train, locomotive or locomotives coupled proceeding to clear an obstruction or assist a disabled train.

Preferred
Disciplines: Operations, Rolling Stock
Remote Control Override
An alternate, simpler system provided to keep traffic moving in the event of failure of electronic remote control equipment whereby certain signal routes can be set to automatic operation.

Regional
Disciplines: Train Control
Remote Controlled
A block station where the switches and signals are controlled from a location remote from that block station.

Regional
Disciplines: Train Control
Remote Controlled Location
A location where signals and/or points are controlled by a Competent Worker at another location.

Preferred
Disciplines: ALL Disciplines
Remote Controlled Signalling (RCS)
A system of safeworking where rail traffic movements are regulated by signals usually controlled from a remote location and/or automatically by the passage of rail traffic.

Regional
Disciplines: Train Control, Operations
Removable Exit Window
A removal system where the emergency window glazing is hinged opened, or removed as a complete integral unit.

Preferred
Disciplines: Rolling Stock
Renewal
means any major substitution work on a subsystem or part subsystem which does not change the overall performance of the subsystem.

Preferred
Disciplines: ALL Disciplines
Repeater
A device conveying information as to the condition of an operated unit.
An alternative term for an Indicator (in a signal box).

Overseas
Disciplines: Train Control
Repeater Signal
A signal provided at some locations to give rail traffic crew better information about the indication of the next signal.

Regional
Disciplines: Operations
Replacement Switch
A switch or button located in the signal box that enables the signaller to replace an automatic Signal to danger. The signal is proved to be at red and alight. Also see Emergency Replacement Switch.

Overseas
Disciplines: Train Control
REPOS
Abbreviation for 'road environment percentage occurrence spectrum'.

Alternative
Disciplines: Rolling Stock
Reserve (railway)
The area of land intended for a specific purpose, e.g. pedestrian, railway.

Preferred
Disciplines: ALL Disciplines
Resetting
Placing equipment or systems (for example axle counters) into a state which is suitable for restoration to service.

Preferred
Disciplines: Train Control
Residual Risk
Risk remaining after risk treatment.

Preferred
Disciplines: ALL Disciplines
Resilient Rail Fastening
A fastening that provides a degree of elasticity between the sleeper and rail with the aim of avoiding the loosening of the fastening due to vibration, as well as enhancing the ability of the fastening system to resist longitudinal creep forces and buckling forces associated with continuously welded rail (CWR).

Preferred
Disciplines: Infrastructure
Resleepering
The process of replacing existing sleepers with new or serviceable sleepers.

Preferred
Disciplines: Infrastructure
Resonated Impedance Bond
An impedance bond provided with a secondary winding, connected to a capacitor, to increase the impedance of the bond to track circuit currents.

Preferred
Disciplines: Electrical
Restoration To Service
Accepting reset equipment or systems back into service.

Overseas
Disciplines: Train Control
Restrain
To prevent movement of rail traffic with signals, signalling equipment, blocking facilities, or the issue of a written warning.

Preferred
Disciplines: Train Control, Operations
Restraint Authority
The Restraint Authority directs rail traffic not to depart the location irrespective of any available Proceed Authority.

Preferred
Disciplines: Train Control, Operations
Restricted Speed
Restricted speed is a speed that allows rail traffic to stop short of an obstruction within half the distance of clear track that is visible ahead.
Restricted speed must not exceed 25 km/h.

Preferred
Disciplines: Operations
RETB
Radio Electronic Token Block


Disciplines:
Return Conductor
A conductor attached to the overhead traction wiring equipment structures that carries return traction current.

Regional
Disciplines: Electrical
Reverse (function)
Position of a lever (or switch) when it is pulled fully in the lever frame (or operated).

Overseas
Disciplines: Train Control
Reverse (points)
The opposite position to normal (points).

Overseas
Disciplines: Train Control
Reverse Contact
A term used to designate a current carrying contact when the operating mechanism is in the reverse position.

Regional
Disciplines: Electrical
Reverse Curve
A curve comprising successive and closely spaced curves in opposite directions. It is usual to connect reverse curves with a straight.

Preferred
Disciplines: Infrastructure
Reversible Line
Non-preferred term for a Bi-directional Line.

Non-preferred
Disciplines: ALL Disciplines
Right Angle Crossing
A crossing where rails intersect at approximately 90 degrees.

Preferred
Disciplines: Infrastructure
Right Away Hand Signal
An indication given to a train crew that passengers have left or boarded the train safely.

Regional
Disciplines: Operations
May also be referred to as Right Of Way.
Alternative
Disciplines: Operations
Right Of Way
The whole of the land contained within the boundaries of the railway reserve.

Preferred
Disciplines: ALL Disciplines, Operations
Right Running Direction
The normal direction of travel on unidirectional lines.

Preferred
Disciplines: Train Control
Right Side Failure
A failure which does not result in the protection provided by the signalling system being reduced. Also known as a negligible risk failure.

Overseas
Disciplines: Train Control
Refer to Fail-safe.
Alternative
Disciplines: Train Control
Related Term: Fail-safe
RIM
Rail Infrastructure Manager


Disciplines:
Riser Block
A block within the flangeway which incorporates ramps and a plateau for the purpose of elevating a wheel tread over a gap.

Preferred
Disciplines: Infrastructure
RISSB
Abbreviation for 'Rail Industry Safety and Standards Board'. The Rail Industry Safety and Standards Board (RISSB) is wholly owned by its funding members and is responsible for the development and management of rail industry standards, rules, codes of practice and guidelines.

Preferred
Disciplines: ALL Disciplines
Road
The term used to describe a designated rail track within the terminal area or shunting yard. The term 'to make a road' refers to the setting of points, signals etc and the clearing of derail devices so that a particular track path is clear for rail traffic.

Preferred
Disciplines: Operations, Infrastructure
Road Rail Vehicle
A road vehicle fitted with retractable rail guidance wheels.
Also see 'hi-rail vehicle'.

Preferred
Disciplines: ALL Disciplines, Infrastructure
Rockfall Detector
A detector installed to detect large objects falling from a cliff or slope above the track and operated when trip wires between fixed points are broken or stretched. Used to raise alarms and/or place protecting signals to stop.

Regional
Disciplines: Train Control
Rodding
The rods connecting a remote point operating lever and the points.

Regional
Disciplines: Train Control
Roll By Inspection
A visual inspection of moving rail traffic to identify equipment, loading security or other defects or failure.

Preferred
Disciplines: Operations
Roller Bearings
Bearings using rolling elements between the moving load-bearing surfaces (cylindrical, spherical and taper rollers).

Preferred
Disciplines: Rolling Stock
Rolling Brand (rail)
A brand rolled into the centreline of the web of the rail in raised letters and numerals. It indicates the rail manufacturer and month and year of manufacture. Australian Standard rails are also branded with the year of the Australian Standard to which the rail conforms. The rolling brand is repeated several times on a standard rail length.

Preferred
Disciplines: Infrastructure, Rolling Stock
Rolling Stock
Any vehicle that operates on, or intends to operate on, or uses a railway track, including any loading on such a vehicle, but excluding a vehicle designed for both on- and off-track use when not operating on the track. Rolling stock is a collective term for a large range of rail vehicles of various types, including locomotives, freight wagons, passenger cars, track machines and road-rail vehicles.

Preferred
Disciplines: ALL Disciplines
Rolling Stock Gauge
A generic term for the three-dimensional size of a railway vehicle including its movements that consists of three specific parts, the static outline, kinematic outline and swept outline.

Alternative
Disciplines: Rolling Stock, Rolling Stock
Refer to Rolling Stock Outline.
Alternative
Disciplines: Rolling Stock, Rolling Stock
Related Term: Rolling Stock Outline
Rolling Stock Operation
Includes provision, maintenance or movement of rolling stock.

Preferred
Disciplines: ALL Disciplines, Rolling Stock
Rolling Stock Operator
means a person who has effective control and management of the operation or movement of rolling stock on rail infrastructure for a railway, but does not include a person by reason only that the person drives the rolling stock or controls the network or the network signals;

Preferred
Disciplines: ALL Disciplines
Rolling Stock Outline
A generic term for the three-dimensional size of a railway vehicle including its movements that consists of three specific parts, the static outline, kinematic outline and swept outline.

Preferred
Disciplines: Rolling Stock, Rolling Stock
Rolling Stock Provider
A person provides rolling stock if the person, as part of an undertaking carried on by him, her or it, designs, constructs, maintains, repairs or alters the rolling stock.

Preferred
Disciplines: ALL Disciplines
Rolling Stock Standards
Rail Infrastructure Managers specified requirements for rail traffic to operate on the Network

Preferred
Disciplines: ALL Disciplines, Rolling Stock
Rollover
Type of derailment mechanism where the rolling stock rolls over onto its side, pivoting about the wheels on that side.

Preferred
Disciplines: ALL Disciplines
Rotary Contact
Contact where the moving contact piece is a conductive segment on a rotary drum which turns to bring the segment into contact with the fixed contact piece.

Preferred
Disciplines: Electrical
Route
The path from one limit of authority to the next in the direction of travel.

Preferred
Disciplines: ALL Disciplines
Route Control System Interlocking
A system whereby a route is set and the signal leading over it is cleared by the signaller operating a route setting button or buttons. Two types are in use, one being the 'Entrance-Exit' or 'Push-Push' type whereby the signaller operates one push-button at the commencement and a second at the finish of the route. The other is the 'one control switch' (OCS) type whereby a separate switch or push-button is provided for each route on a signal and the signaller operates the switch or push-button for the route required. The interlocking between routes may be relay interlocking or computer based interlocking.

Regional
Disciplines: Train Control
Route Indicator
An indicator working in conjunction with a signal indication. It is provided at the divergence of two or more lines, and indicates to the driver the route to be taken by the train.

Regional
Disciplines: Train Control
Route Lever (one Way)
Route lever (or push-button) which, once operated, returns immediately to normal and which is to be moved in the same way whether a route is to be established or released.

Regional
Disciplines: Train Control
Route Locking
A form of Interlocking which maintains the locking associated with a route in use until after the train has passed clear of the equipment being locked (for example, points or opposing signal). The release may be effective only after a time delay.

Overseas
Disciplines: Train Control
Route Setting
A system in which all points in a route are set to the required positions, and the signal at the entrance to the route cleared by the operation of one or two control functions.

Overseas
Disciplines: Train Control
Route Signalling
System of signalling in which the signals indicate the state of occupancy and conditions on the track ahead, and the route which the train is authorised to follow.

Regional
Disciplines: Train Control
Routine Test
A test conducted on every vehicle that will be registered to operate.

Preferred
Disciplines: Rolling Stock
Refer to Type Test.
Alternative
Disciplines: Rolling Stock
Related Term: Type Test
RSRP
Abbreviated term for 'Rail Safety Regulators Panel'.

Alternative
Disciplines: ALL Disciplines
RSSB
Rail Safety and Standards Board (UK)


Disciplines:
Abbreviation for 'Railway Safety and Standards Board' for the UK railways.
Alternative
Disciplines: ALL Disciplines
RTC
Rail Traffic Crew


Disciplines:
RTG
Rubber Tyred Gantry


Disciplines:

Preferred
Disciplines: ALL Disciplines
Rubber Tyred Gantry (RTG)
An overhead crane spanning one or more rail tracks and roadway to allow transfer of loading from a road vehicle, or a rail wagon.
Often referred to as a Straddle Crane.

Preferred
Disciplines: Operations, Rolling Stock
Refer to Gantry Crane.
Alternative
Disciplines: Operations, Rolling Stock
Related Term: Gantry Crane
Ruling Grade
The steepest grade on the route that limits the through load permitted to be hauled by the respective classes of locomotives.

Regional
Disciplines: Operations, Rolling Stock
Run
A sequence of trips assigned to be worked by a particular set of rollingstock

Regional
Disciplines: Operations
Run Through
A movement through trailing points set in the wrong position. Damage to the point mechanism and switch rail usually results.

Overseas
Disciplines: Train Control, Operations
Running Direction
See Right Running Direction; 'wrong running direction'.

Preferred
Disciplines: Train Control
Running Edge
The side or edge of a rail or trackwork component where the inside edge of the wheel flange makes contact.

Preferred
Disciplines: Infrastructure
Running Face
The inside face of the head of a running rail which contacts the flange of the train wheel.

Alternative
Disciplines: Infrastructure
Refer to Gauge Face.
Alternative
Disciplines: Infrastructure
Related Term: Gauge Face
Running Inspection
An inspection of a train prior to the start of its journey to ensure no faults are found.

Regional
Disciplines: Operations
Running Line
A line (other than a siding) that is used for the through movement of rail traffic.

Preferred
Disciplines: ALL Disciplines, Operations
Running Move Derailment
The derailment of rail traffic occuring in the normal forward movement which has been authorised to depart and has commenced its journey to operate on a running line.

Preferred
Disciplines: Train Control, Operations
Running Movement
Any movement on running lines authorised by a proceed authority (PA).

Preferred
Disciplines: Train Control, Rolling Stock
Running Repairs
Minor repairs carried out on Rolling Stock without removing them from service.

Preferred
Disciplines: Operations
Running Signal
A fixed signal placed near a running line to authorise and control running movements between one signal and the next.

Preferred
Disciplines: ALL Disciplines
Running Surface
The crown or top surface of a rail or trackwork component which supports the wheel tread.

Preferred
Disciplines: Infrastructure