Week 9 - AHBC Crossings

Question 1

What circumstances would require an AHBC to be taken under local control?

Answer 1

SWETFFS

• SLW needed.
• Wrong direction move needed (and no wrong direction controls)
• Engineering work affecting the crossing.
• Traffic flow.
• Failed train within crossing controls.
• Failure of crossing equipment.
• Stop (train needs to stop within crossing controls)

Question 2

If an AHBC fails, what should your immediate actions be?

Answer 2

• Place or maintain signals to danger to protect the crossing and apply reminders
• Advise other signallers if necessary
• Report the failure to control
• Arrange for the crossing to be taken under local control
• Arrange for Civil Police to be told

Question 3

Road traffic lights are working at an AHBC when no train is approaching. What instructions must you give someone who calls requesting permission to cross? (TS9, 3.5.1)

Answer 3

• Inform them to wait for an attendant to arrive, or

- Take an alternative route

Question 4

If road traffic signals are not working and the barriers have failed in the raised position at an AHBC, how will you deal with trains?

Answer 4

Not authorise them to pass over the crossing until an attendant arrives

Question 5

You have received reports of an alleged failure of barriers at an AHBC. What must you instruct the attendant before local control is taken? (TS9, 3.9.2)

Answer 5

Observe the passage of trains and tell you about any irregularities in the operation of the crossing

Question 6

You have received reports of an alleged failure of barriers at an AHBC. When can you allow the attendant to take local control? (TS9, 3.9.2)

Answer 6

Only when the S&T give you permission to do so, unless it is certain the crossing equipment has failed.

Question 7

An AHBC has suffered a power failure. What are your actions? (TS9, 3.5.2)

Answer 7

• Tell S&T
• Signal trains normally over the crossing for 6 hours

After that, until power is restored, you must:
-Advise each driver to approach the crossing at caution and not pass over it until the driver has made sure that it is safe to do so

Question 8

If the phones have failed at an AHBC, but the barriers and road traffic lights are working, how would you signal trains?

Answer 8

• Caution trains over the crossing
• Instruct to cross only if safe to do so
• Clear the signal

Question 9

If the road traffic lights have failed at an AHBC, until an attendant arrives, how would you signal trains?

Answer 9

• Caution trains over the crossing
• Instruct to cross only if safe to do so
• Clear the signal

Question 10

If the Barriers have failed at an AHBC, until an attendant arrives, how would you signal trains?

Answer 10

• Caution trains over the crossing
• Instruct to cross only if safe to do so
• Clear the signal