Central London 'PoSA' signalling

[John Hinson]

Is this line DOO operated? If so no guard to have a ding ding and away SPAD.

I suspect the rules do not differ whether or not DOO. "Ding ding and away" is just a name that means much the same in either circumstance. It is just as easy for a driver to be focussed on closing doors and then just drive away as it is with receiving a bell. Maybe even easier.

John

[Fast Line Floyd]

Definitely DOO indeed part of the route was the first mainline DOO passenger route (Bedford - St Pancras and Moorgate).

[John Webb]

I sometimes wonder if modern electric trains taking power are unable to control their starting speed below a certain level - leaving Crewe it often appears that a quick start is followed by the train slowing down.

Mike - minor deviation - was your train starting from Crewe? If so, could it be a running brake test? We are very aware at St Albans South of trains which have just come out of the turn-back siding as they do such a test as they pass the box.

[Fast Line Floyd]

I sometimes wonder if modern electric trains taking power are unable to control their starting speed below a certain level - leaving Crewe it often appears that a quick start is followed by the train slowing down.

Mike - minor deviation - was your train starting from Crewe? If so, could it be a running brake test? We are very aware at St Albans South of trains which have just come out of the turn-back siding as they do such a test as they pass the box.

Good thought and probably correct.