Week 6 Level Crossings and Detention of trains

Name all Automatic types of crossing (4)

AHBC
AOCL
ABCL
RG

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Name all Controlled types of crossing (5)

MCB
MCG
OD
CCTV
RC

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Name the three other types of crossing

TMO
OC
UWC(T)

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What does AHBC stand for ?
How are they controlled ?
What is the max speed over one ?
What are the 2 options for triggering them ?

Automatic Half Barrier Crossing
By the passage of trains (automatic)
100mph
Treadle or Track Circuit

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How does a treadle function ?

Train passing physically pushes an arm that triggers the treadle (usually in pairs as a fail safe) which starts the process for stopping traffic.

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What will be present if a AHBC has wrong direction controls and where would you find details of where these are fitted ?

A sign with an X and then horizontally next to it a speed.

Table A diagrams in the sectional appendix noted with a “X”

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What does AOCL stand for ? Who monitors them ?

Automatic Open Crossing Localy Monitored
You the driver !

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What does ABCL stand for ?

Automatic Barrier Crossing Locally monitored

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What occasion could you pass over an AHBC without wrong direction controls ?

When under local control and with a green hand signal

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Desrcibe the infastructure on approach to an AOCL

Level Crossing warning board (likely with AWS)
Speed Restriction board (X on top, speed below)
Level Crossing Indicator - flashing white light clear

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If linespeed is higher than crossing speed when can you start to accelerate ?

When the train nose is on the crossing

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If you fail on approach to AOCL what must you be aware of, what might be there to assist and what key might you need and what must you do ?

Works on timer system, so do not proceed if flashing white light is out - push plunger - might need BR1 Key, sound horn.

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Whats an R & G Crossing and who is responsible for crossing ? Where are these usually found ?

The person crossing
Footpaths and bridal ways

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What is an MCB and how are they checked to be clear ?

Manually Controlled Crossing with Barriers
Visually

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What is an MCG and who would move the gates ?

Manually Controlled Crossing with Gates
Powered or a Crossing attendant

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What is an OD Crossing and are they automatic or controlled ? How do they operate ?

Obstacle Detection Barrier Crossing
Although they work automatically they are considered controlled as they have a controlling signal.
Operated by Radar and LIDAR to check clear

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On an OD Crossing after after how many seconds of amber do flashing red lights start ?

3 seconds

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Who operates CCTV Crossings ? What 2 things must they have ?

The signaller (or someone at a crossing box on their behalf)

Controlled signal and Flood Lights

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How are RC Crossings checked ?

visually

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What is a TMO Crossing ? What are the 2 types and their features ?

Traincrew Operated
Stop Board with instructions (will have fixed distance board)
Stop board with plunger and level crossing indicator (wll have warning board + before)

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Whats a UWC(T) ? What might a driver see on approach that they should react to (and how)

User worked Crossing (with telephone)
Whistle Board they should sound low horn at

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What's an OC and also an alternative name for this ?

Open Crossing or Barrow Crossing

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If a level crossing fails what colour flag do you need to pass and at what speed ?

Green and caution

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When you pass over a level crossing what must you check and if there is an issue when must you report it ?

Check gates are closed
ASAP

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During what hours should you use your horn when you see someone on or near the line and what tone horn ?

24/7 high then low

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During what hours should you use your horn at a whistle board and what tone horn ?

06:00 -23.59
Low horn

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Danger on the line ! What horn are you using and how ?

High tone long blasts

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What's another time you would use low tone horn?

In a Depot or sidings

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Who can tell you when not to use your horn ?

No one !

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Under standard arrangements at a red signal when must you contact signaller and how often ? Which button on GSMR ?

Straight away unless you can see an obvious reason for the red but can only wait up to 2 minutes. Then every 5 minutes.
SG

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Name some ways of contacting signaller ?

GSMR
Lineside Phone
Signal Post telelephone (stood at or other)
Mobile phone
Going to box

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Under standard arrangements at a red what must you tell signaller ? And if you're calling from another signal post what is important (2)

Headcode and Signal number
Correct signaller & they understand what line you are on

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At a red signal - non standard where are the two places the wait time could be shown

Sectional appendix
Number on Signal Post Telephone

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What sign indicates no telephone at signal ? And when can you leave cab when stopped at this to find another phone

White Diamond
Emergency OR when told by another drive it is safe to do so

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What does the white diamond also indicate ? And how long do you have to use another telephone ?

Presence of track circuit
10 minutes

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If a SPT has a red and white checkered limited clearance sign attached what does it mean ?

Telephone can only be used when your train is held there as protection is guarenteed by the presence of your train

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Describe the 4 limited clearance telephone signs that can only be used in an emergnecy ?

White diamond with X
Yellow diamond with X
Yellow circle on usual SPT
Yellow circle over black X

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Get Revising

Week 6 Level Crossings and Detention of trains

Other cards in this set

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Card 3

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Card 4

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Card 5

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