CBTC Faults

Question 1

Any irregularities observed must be reported to _____ immediately?

Answer 1

Train Controller

Question 2

How can a Driver become aware of a CBTC system irregularity?

Answer 2

Alerts on the HMI/TMS or DMI

Question 3

What must a Driver do when they are made aware of a CBTC irregularity?

Answer 3

• Stop the train
• Contact Train Control
• Await further instructions

Question 4

What are some examples of a CBTC irregularity?

Answer 4

• Error messages
• Abnormal working behaviour of the VATC
• Loss of CBTC communication
• TSR irregularity (permitted speed exceeds posted speed)
• TMR irregularity (restricted mode becomes available before the end of affected area)
• Heat related speed restriction irregularity (WOLO)

Question 5

What must the Signaller do when a Driver reports an irregularity?

Answer 5

• Advise the Driver of the steps required to resolve the issue
• Set the route for the movement, if required

Question 6

When can the Signaller resume normal train operations?

Answer 6

When the Driver of the train after the affected train has reported back that the CBTC system is functioning correctly

Question 7

Can a Driver transition from AM/SM to CS at a non-transition location?

Answer 7

Only with authorisation from the Signaller

Question 8

In what circumstances can the Signaller give the Driver permission to transition to CS at a non-transition location?

Answer 8

• CBTC system cannot locate the affected train
• AM/SM is unavailable due to a CBTC failure/irregularity

Question 9

When can the VATC generate a VATC EB?

Answer 9

If a safety risk occurs against the Automatic Train Protection standards

Question 10

What must a Driver do when they observe a VATC EB?

Answer 10

• STOP
• Immediately report to Train Control
• Contact Signaller. Only reset and continue movement when authorised by the Signaller

Question 11

What must the Driver do when they become aware of a movement authority issued beyond an illuminated fixed signal?

Answer 11

• Stop the train ASAP
• Inform the Signaller

Question 12

What is your authority to pass an illuminated fixed signal?

Answer 12

Verbal instructions from the Signaller to continue in accordance with the movement authority

Question 13

What will the Signaller do once they are aware of an illuminated fixed signal?

Answer 13

• Restore the fixed signal to STOP for all approaching trains
• Confirm the train is stationary, reset the route
• Verbally instruct the Driver to continue in accordance with the CBTC movement authority