Home |
Search |
Today's Posts |
![]() |
|
London Transport (uk.transport.london) Discussion of all forms of transport in London. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#61
![]() |
|||
|
|||
![]()
On 29/09/2010 06:58, Clive D. W. Feather wrote:
[Yes, I only just saw this thread.] In message , Steve Fitzgerald ] wrote: What seems to be rare on LU is three aspect signals. There used to be one at the entrance to the Southbound platform at East Putney but that might be BR practice. On LU They are generally speed controlled signals and work in a subtly different way although they are still stop signals and have a train stop. If they show green, there is a clear route set and no speed checking is in place. If they show red, speed checking is in place and the signal will show a yellow aspect and the train stop will drop when the train's speed has been proved below a set figure. I'm not sure if any still do, but they used to show red+yellow (with train stop up) to show the train had entered the timing track circuit, then change to plain yellow (with train stop down) after sufficient time to ensure the train had slowed enough (if it hadn't, it would be tripped before the signal could change). Of course where we share with BR then their signalling practices are in force. Only when it's their track. Where do tube or sub-surface trains run that is strictly NR territory? There *are* true LU three- and four-aspect signals on the Metropolitan Line north of Harrow-on-the-Hill. I thought those would be NR signals. I notice that they still have the separate stop arms for LU stock and AWS for NR stock. |
#62
![]() |
|||
|
|||
![]()
In message , "
wrote: Of course where we share with BR then their signalling practices are in force. Only when it's their track. Where do tube or sub-surface trains run that is strictly NR territory? Queen's Park Junction to Harrow and Wealdstone. Gunnersbury to Richmond. There *are* true LU three- and four-aspect signals on the Metropolitan Line north of Harrow-on-the-Hill. I thought those would be NR signals. I notice that they still have the separate stop arms for LU stock and AWS for NR stock. Nope, they're LU. It's LU track. Are you sure about AWS? I thought that all stock running on that line had to be fitted with tripcocks. -- Clive D.W. Feather | Home: Mobile: +44 7973 377646 | Web: http://www.davros.org Please reply to the Reply-To address, which is: |
#63
![]() |
|||
|
|||
![]()
On 29/09/2010 20:23, Clive D. W. Feather wrote:
In message , " wrote: Of course where we share with BR then their signalling practices are in force. Only when it's their track. Where do tube or sub-surface trains run that is strictly NR territory? Queen's Park Junction to Harrow and Wealdstone. Gunnersbury to Richmond. There *are* true LU three- and four-aspect signals on the Metropolitan Line north of Harrow-on-the-Hill. I thought those would be NR signals. I notice that they still have the separate stop arms for LU stock and AWS for NR stock. Nope, they're LU. It's LU track. Are you sure about AWS? I thought that all stock running on that line had to be fitted with tripcocks. I don't know about tripcocks, but I'm pretty certain that I have seen AWS inductors on between Amersham and Harrow-on-the-Hill. I know that North London Line's 378s are not fitted with tripcocks for the Gunnersbury-Richmond section, and I am also quite certain that I have seen AWS inductors there. Trains on the Northern City Line into Moorgate appear to be fitted with tripcocks, however -- at least the stop arms/policemen are still working as trains enter the station. Are there any plans for that line, BTW? Will it remain under FCC or will TfL eventually get its hands on it again? |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Investigation under way after Tube train collision | London Transport | |||
The case for free train travel - response to the guy who sent me the link | London Transport | |||
Are emails still being sent for auto top-up? | London Transport | |||
But of course.... | London Transport | |||
Bendy bus off course | London Transport |