Shouldn't systems Like LZB or ETCS bei mostly protected against radio interference as only the Last section (centimeters) needs to bei transmitted wirelessly? Are they used in the line or did they opt for something else?
Yeah, generally that’s true - it’s certainly not a long-range system. I’m not clear on what the actual problem is at Stratford, but I do know these systems can be quite sensitive and it can be tricky to ensure they operate reliably alongside each other.
In the case of Crossrail the core (new tunnels) use CBTC signalling, I think based on Siemens TrainGuard - I think the specification of the project predates ETCS being proven as a viable solution for this particular kind of service. The services leaving Stratford to the East use TPWS/AWS in common with most services on the UK mainline network.
The challenge is in the transition between the two systems, as I understand it - anything out of the ordinary and the train will of course come to an immediate halt.
In the case of Crossrail the core (new tunnels) use CBTC signalling, I think based on Siemens TrainGuard - I think the specification of the project predates ETCS being proven as a viable solution for this particular kind of service. The services leaving Stratford to the East use TPWS/AWS in common with most services on the UK mainline network.
The challenge is in the transition between the two systems, as I understand it - anything out of the ordinary and the train will of course come to an immediate halt.