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Oulton Broad North

Unread postPosted: Thu Oct 20, 2016 8:32 am
by colin1501
Have just read in a copy of 'Rail Express' that the up starter at Oulton Broad North is to be moved to 'prevent delays on the level crossing'. Presumably, this means replacement by a colour-light positioned further back along the platform, allowing trains to enter while the barriers are still up - can anyone confirm? With full resignalling of the line planned in the next couple of years, this seems an odd change to make now, but presumably any new signal can be incorporated into the new signalling in due course.

Colin

Re: Oulton Broad North

Unread postPosted: Thu Oct 20, 2016 4:05 pm
by ex Probationer
There is more background information on improving the road waiting times at the level crossing here:

http://www.networkrailmediacentre.co.uk/news/waiting-times-at-oulton-broad-north-level-crossing-to-be-improved

Kevin

Re: Oulton Broad North

Unread postPosted: Thu Oct 20, 2016 6:57 pm
by colin1501
Thanks Kevin - interesting. The time saving will only apply in the up direction, with the barriers remaining up until the train is in the platform. For down trains, the barriers will still need to be lowered in time for the driver to get the distant 'off'.

Colin

Re: Oulton Broad North

Unread postPosted: Fri Nov 25, 2016 8:15 am
by ex Probationer
According to the following, the new up platform signal and associated works should be completed and be in operation for Mon 28th Nov 2016.

This work should allow the barriers to be lowered much later, reducing the barrier 'down-time' and consequent delays to road traffic.

The full details are available here:

http://www.networkrailmediacentre.co.uk/news/new-signal-gives-green-light-for-reduced-waiting-times-at-oulton-broad-north-level-crossing

Kevin

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 7:28 am
by colin1501
Thanks, Kevin. I wouldn't mind a bit more information about this, if anyone has any. Presumably, where the NR article talks about moving a signal (the up starter), they mean installing a new one, and presumably a colour-light. If so, have there been any consequential changes to the signals in rear - the up junction home (facing connection to the East Suffolk line), the up outer home, and the up distant (under Lowestoft's advanced starter), all of which were wire-operated semaphores last time I looked. And presumably, there have been no changes to the down line signals, so road users still have a fair wait for down trains?

Colin

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 8:10 am
by Alistair Larter
This has been replaced by new semaphore motor worked. This is quite surprising in this day of lightweight led colour light signals.

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 9:21 am
by JRB
Power supply considerations no doubt.

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 9:59 am
by John Hinson
Alistair Larter wrote:This has been replaced by new semaphore motor worked. This is quite surprising in this day of lightweight led colour light signals.

It isn't always desirable to install colour-lights in semaphore areas. Sometimes it involves additional track-circuiting but most importantly. reading-through of semaphore signals with a colour-light ahead can be a major issue.

John

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 10:13 am
by davidwoodcock
John Hinson wrote:It isn't always desirable to install colour-lights in semaphore areas. Sometimes it involves additional track-circuiting but most importantly. reading-through of semaphore signals with a colour-light ahead can be a major issue.


And has been almost since colour light signals first appeared.

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 11:25 am
by Mike Hodgson
JRB wrote:Power supply considerations no doubt.


Why?
I think the power consumption of the modern LED type is pretty low.
A motor on a semaphore takes a fair amount of power albeit mostly whilst pulling the signal towards the off position.

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 6:40 pm
by colin1501
So the Oulton Broad North signaller now has a motor-worked starter and a wire-operated distant - interesting! Still, under the new arrangements, where the barriers are only going to be lowered and the starter cleared once the train is in the platform, he's never going to pull the distant off.

Colin

Re: Oulton Broad North

Unread postPosted: Sat Nov 26, 2016 8:23 pm
by ex Probationer
colin1501 wrote:So the Oulton Broad North signaller now has a motor-worked starter and a wire-operated distant - interesting! Still, under the new arrangements, where the barriers are only going to be lowered and the starter cleared once the train is in the platform, he's never going to pull the distant off.
Colin


The Up Distant is slotted with Lowestoft's Section signal and between 1993 and 1999 there were a number of wrong-side failures due to the Distant signal not returning to 'On' with the Distant lever 'Normal'. As a result of these failures the Up Distant lever was bolted in the 'Normal' position and signed 'out-of-use'. That was still the case when I visited in 2005 and 2010. So it has been some time since the distant has been in use, unless the situation has changed.

Kevin

Re: Oulton Broad North

Unread postPosted: Mon Nov 28, 2016 7:49 am
by ex Probationer
There is a photograph of the new signal on the Suffolk & Norfolk Travel Information Facebook website.

https://www.facebook.com/Suffolknorfolktravel/photos/a.176404965901052.1073741829.174569502751265/564939730380905/?type=3&theater

The new signal is provided with a full size arm, whereas the original signal had a shortened arm, a relic from when there was a footbridge adjacent to the signal.

Kevin

Re: Oulton Broad North

Unread postPosted: Mon Nov 28, 2016 12:42 pm
by scarpa
I wonder how easy it was to obtain a signal motor and then there is the spares motor brushes.There were several semaphore motor operated signals post Lincs recent resignalling. Were these recovered I wonder. It was far quicker to provide a motor operated signal as the design for a colour light and cost would have been prohibitive and implementation.

Re: Oulton Broad North

Unread postPosted: Tue Nov 29, 2016 12:48 am
by Pete2320
But why is the new signal motor operated? It isn't that far from the box.

Not many signal motors recovered from North Lincolnshire, in fact I can't think of any!

Pete