A short video showing mechanical signalling, panles and RRI, IECC and SSI:
http://www.youtube.com/watch?v=b4q3i5aw6...re=related
Another on switch and crossings:
http://www.youtube.com/watch?v=ZuR5QTlfO...watch-vrec
A driver training cab video:
http://www.youtube.com/watch?v=bSloSN86n...re=related
Level crossing challenge:
http://www.youtube.com/watch?v=FgjYFtsCD...ure=relmfu
and a film of how things used to be (but probably not a good idea to describe this methodology in an IRSE Exam question)
http://www.youtube.com/watch?v=hsuHUYKfBmE
http://www.youtube.com/watch?v=b4q3i5aw6...re=related
Another on switch and crossings:
http://www.youtube.com/watch?v=ZuR5QTlfO...watch-vrec
A driver training cab video:
http://www.youtube.com/watch?v=bSloSN86n...re=related
Level crossing challenge:
http://www.youtube.com/watch?v=FgjYFtsCD...ure=relmfu
and a film of how things used to be (but probably not a good idea to describe this methodology in an IRSE Exam question)
http://www.youtube.com/watch?v=hsuHUYKfBmE
PJW

