Permissive Working

Question 1

What’s the 6 types of permissive working?

Answer 1

PP = Full Permissive
PPA = Attaching/Detaching
PPC = Permissive Contingency
PPS = Platform Sharing
PF = Permissive Freight
EP = Emergency Permissive

Question 2

What are the different classes for PP/PPA/PPC/PPS?

Answer 2

1,2,3,5,9,0

Question 3

What are the classes for PF?

Answer 3

3,4,5,6,7,8,0

Question 4

What’s the purpose of permissive working?

Answer 4

More than 1 train at a time can be signalled into a block section, signal section or dead-end line.

Question 5

How would you usually be signalled for permissive working?

Answer 5

Associated position light or semaphore subsidiary signal.

Question 6

What’s the distance you must stop before a train when permissive working?

Answer 6

6ft 6in

Question 7

What must you do before proceeding after being signalled into a platform?

Answer 7

Call the signaller, confirm you are authorised for permissive working and make sure you can fit on the platform.

Question 8

What are risks to consider when permissive working?

Answer 8

Gradient, Track condition, Low adhesion, Stopping at the incorrect location on platform (stopping short or proceeding too far), Rear of the train not along platform edge, Having to set back/draw forward to the correct position, Not knowing which movement applies to you, Moving without authority or not moving when authority is given,
Conflicting movements.