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in reply to theslash,
i too hold full AC and DC PTS, and regularly drive over / under both systems.
3rd rail is distinctly 'lo-tech'. the main day to day operational difference between the systems is that one slip can more easily be fatal in 3rd rail areas, ohle is out of the way. and ohle...
4 of that lot could have been the same ones which found their way through manchester victoria this dinnertime. i can't remember the numbers, 66200 might have been one of them though. the driver 'gave it some' through the station as a run-up to attack miles platting bank.
edit - yesterday...
waste of money.
What's wrong with the current train service? it's practically a self-contained high-frequency light rail system as it is.
i can think of 300 million better ways to spend £300m.
If it ain't broke, don't try to fix it.
There are more pressing needs for transport money...
Signed it.
Don't let cheap nasty contraptions like this start creeping onto corners of the network and taking jobs.
Heavy rail means quality transport.
Train horns are louder partly because newer trains themselves are quieter.
If you don't want to hear them, don't live near the railway line, similarly if you don't like being flooded, don't live on a flood plain.
not necessarily - all it takes is one broken traction return current bond and you'd be toast before you knew it.
i have to say third rail is a primitive, dangerous thing, not at all eco-friendly and it seems every week stories are in the paper about kids being electrocuted by live rails, not...
manchester metrolink has connections at victoria east junction (this can only be used under possession arrangements, the points are clipped, scotched and padlocked in the normal position), and also at altrincham. I've no idea when either were last used.
Metrolink does run on network rail...
actually, that's not quite right. the welding on the top of the railhead is for improving the reliability of track circuits - it's important that the signalling system doesn't 'lose' units or other vehicles on occupied bay platform lines for obvious reasons - the welding gives a smaller, raised...
You're mostly barking up the right trees here - 'Idiot Boards' as they're sometimes affectionately known are usually put in place as spad mitigation attempts for multispad-ed signals, which of course can be for a variety of reasons. they're usually on open running lines where visibility is...
wherever resignalling projects are carried out these days the standard seems to be LED ground signals and searchlight Main Aspect signals - ie Carlisle & Wigan Wallgate areas most recently