Signals

[Stuart-h]

Someone on here is bound to know.
I was at blecthley the other day.
I noticed the signal on the up fast line (platform 1) to be flashing a double yellow signal.
Any one know the reason behind it?

A london midland train did pass by at full line speed, signal goes through it's full cycle then goes to green for the next train through.

 

[Tomnick]

This page probably explains it best!

 

[The Planner]

Isn't 1 the down fast? if so it will be for a train into Platform 5 at MK I suspect.

 

[Stuart-h]

Platform 1 is north bound to milton keynes central.
platform 2 is the southbound to London Euston.!

cheers Tomnick!

 

[A-driver]

Someone on here is bound to know.

I was at blecthley the other day.

I noticed the signal on the up fast line (platform 1) to be flashing a double yellow signal.

Any one know the reason behind it?



A london midland train did pass by at full line speed, signal goes through it's full cycle then goes to green for the next train through.

Flashing yellows are used for higher speed junctions rather than bringing a train right down to a red. They flash on approach to warn drivers that the route is set to take a diverging route with a lower speed than going straight on to put it simply.

 

[Stuart-h]

cheers for that A-driver. That wasent covered on the pts course!

 

[Alistair G.]

The flashing yellows are for a move from the down fast, into the reversible fast (platform 5 @MKC) @ knowhill junction (just South of MKC).

It's used roughly every hour between about 09 until just after four and it's for London midland 1W** trains that then have to depart MKC on to the down slow so can go via Northampton.

The move can be used for any train need dn fast - platform 5 at the Keynes but this is your main reason why

 

[transportphoto]

Platform 1 is north bound to milton keynes central.
platform 2 is the southbound to London Euston.!

cheers Tomnick!

In which case, you have your understanding of up and down wrong… up is usually towards London, down is away from.

TP

 

[Tomnick]

In which case, you have your understanding of up and down wrong… up is usually towards London, down is away from.

TP

Well spotted! Hopefully the importance of correctly identifying the line that you're referring to is covered in the PTS course, even if flashing yellows aren't .

 

[Stuart-h]

It is! Havent worked on the euston line yet!

 

[carriageline]

The "Up and Down " rule isn't just local to the 'Euston' line (West Coast mainline ), it's used all over the country (in applicable lines of course!)

 

[Tomnick]

Never assume that it's the case though - perhaps not on the main lines leading directly into London, but on secondary routes further out, Up is sometimes quite clearly 'away' from London!

 

[TDK]

cheers for that A-driver. That wasent covered on the pts course!

You don't need to know about flashing yellow signals for a PTS certificate.

 

[GB]

Never assume that it's the case though - perhaps not on the main lines leading directly into London, but on secondary routes further out, Up is sometimes quite clearly 'away' from London!

Indeed. Coming off the down main at Haughley Junction on the GEML you are then on the Up Bury and vice versa.

 

[snowball]

From Manchester Victoria all directions are down.

 

[Welshman]

From Manchester Victoria all directions are down.

On east-west routes where there is no regular direct service to London, other centres determine the up/down nomenclature.

Manchester Victoria was the headquarters of the old Lancashire & Yorkshire Railway, so all lines to Manchester were classed as "up".