| Topic: | Re:Re:Re:Re:Reply | |
| Posted by: | Al Webber | |
| Date/Time: | 21/02/20 08:53:00 |
| Paul, it's hard to know where to start on that one. The best thing to do is to give the example of Crossrail. They are trying to integrate different signalling systems together, and that's the biggest reason it's years late. Signals aren't just like traffic lights. It's much more complex than that. On LU, a train will automatically get stopped if it goes through a red signal. Even if the driver has some kind of knowledge of the location and speed of the train ahead, he will still be confronted by a red signal from the ancient signalling system that will not be able to interact with his GPS. Removing the trainstops and letting drivers go through red signals is a total non-starter on safety grounds. One of the big issues with the Paddington train crash in 1999 (that killed 31 people) was that Railtrack (as it was then) didn't have a system to automatically stop the train when it went through a red signal. No-one is going to sign off on turning off safety systems like that. |