Wokingham resignalling

[whole diary]

[stuving]

I don't think this crossing was, in fact, ever likely to become am object detection one. The guide (Level crossings: a guide for managers, designers and operators) says of CB-ODs:

This type of crossing may be suitable at sites where road traffic flows freely, road lay-out is simple and there is no significant history of misuse. Risk assessment should, in particular, consider how the risks from blocking-back of road traffic and high or problematic pedestrian usage will be controlled.

The station crossing was never going to meet that description; even the Star Lane one, which might, has gone to MCB^▸ (Miniature Circuit Breaker) (CCTV^▸ (Closed Circuit Tele Vision)) as well.

However, that guide has been withdrawn by ORR^» (Office of Rail and Road formerly Office of Rail Regulation - about), and "replaced" by Principles for managing level crossing safety, which is guidance for doing risk assessments. I don't see that as a replacement, and I'm not convinced it's helpful (a topic to return to, probably.)

[stuving]

Here's how to paint, or rather repaint, a level crossing - not exactly a modern automated process.

First you mark out the lines with a chalky string (p1). I didn't see any careful measuring, so I think they had a plan or image of the crossing, with the pattern drawn onto it. They did some of the white lines and the yellow lines at the ends with hot gloop while I was away. I was told by one of the main contractor's guys that the yellow gloop does not stick to the Strail plastic panels in the centre, but not why the white stuff does.

Putting gloop down obviously involves a degree of skill, using what I gather is called a drawbox (p2). Those Strail panels were done with roll-on paint, following masking with sticky tape (p3). Supposedly that does adhere - but in the final view, from Monday, it's already wearing off (p4).

On Sunday, they were installing new trespass guards after all; they are some kind of rigid plastic and are screwed down. And I was told, about that fencing, that they now had to make all the 1.4s into 1.6s. I take it that means the standard they work to now says six-foot high fencing is needed all round it.

[CyclingSid]

Yellow and white line painting seems to wear very quickly. Is that because of economy and they put down the thinnest layer. I know ones in London which have survived for ages, but I can also feel them when I go over them on the bike.

[stuving]

Yellow and white line painting seems to wear very quickly. Is that because of economy and they put down the thinnest layer. I know ones in London which have survived for ages, but I can also feel them when I go over them on the bike.

The main factor is, I'm sure, that there are three main ways of applying these markings (that I've seen used here - and many more I've not). Paint is obviously likely to wear off, and most notably so on plastic surfaces like the level crossing boards (have you tried painting drainpipes?).

Then there's the gloop - officially it's a thermoplastic resin - which forms a thick solid layer. This will eventually break up like the road itself, but does seem more durable.  I see cold gloop is now available, and lasts even better.

When the Wokingham crossing and junction were rearranged in 2015, some of the white lines at the junction were applied as sticky shapes. The process involved preheating the road with as gas torch, then rolling them down. It did not work, and they got lifted up, and stuck down on other markings - which looked really bad, and pretty confusing.

[stuving]

When I went to have a look on Monday (19th) afternoon, there was a guy with a video camera on a tripod. He turned out to be one of the Basingstoke signallers who does the level crossings! He was promising shorter barrier-down times, suggesting there was a new block, or least a distant signal, on the approach from Crowthorne (though I'm not convinced of that).

I would expect the ROC^▸ (Rail Operating Centre - a centralised location for railway signalling and train control operations for a specific route or region) to be quicker than a local signaller, resetting the route for the next train using the lever frame before crossing the box to press the button, especially with ARS^▸ (Automatic Route Setting). Crossings now have their own signaller, and I was surprised to see that they use a box with lights and switches per crossing, not a patch of a screen.

I didn't gather whether this video was for familiarisation and briefing purposes, or whether he was being a railway enthusiast (which he obviously was). I've now found the video on YouTube, where he calls himself M-Train. So if you like watching level crossings operating, he has more like this ...
https://youtu.be/7sCDrGmJ5Yw

He said the emergency number goes to the relevant signaller, and they get a lot of non-emergency stuff: complaints and insults mainly. I'm surprised there isn't an operator to screen calls in this sort of urban area.

We both thought one of the zigzags (the far one in the video) was rather low - perhaps to improve the sighting for drivers? Well, a driver's eye view doesn't support that, what it really shows is how dense the thicket of signs and posts is there.

[stuving]

“Can anyone explain the relevance of the first photo to a resignalling project?”

The pic of what looks like bank stabilization works does seem irrelevant; probably another example of Network Rail’s Media Contractors’ Reputation Management efforts or should it be mismanagement efforts ?!

True, if that is slope stabilisation work, it does not seem to fit even the track replacement work in the project. But then apart from the two staff recorded at Wokingham Station, the other scenes in the video are not related to the recent work. The level crossing being renewed is Mays crossing in Datchet, and the overhead view is of Wood Lane crossing at Isleworth - done ages ago.

For a resignalling project, it did seem a bit odd for 1 km of track replacement to be included. But replacing Wokingham Junction did make sense as resignalling, not just using the blockade for another job. It would not make sense to replace it and to do the motorisation as separate steps.

And while it's not obvious how to measure the single track length of a junction, that one is likely to come out as is over 800m. Then there are the two crossovers worked by ground frames, at Bracknell and Blackwater, which have been motorised - and may have been replaced in the process.

[CyclingSid]

When are they going to complete the new bridge? Or is that the purpose of the latest planned closure?

[stuving]

When are they going to complete the new bridge? Or is that the purpose of the latest planned closure?

It'll now be late summer!

Explanation on the bridge/foot crossing thread with previous pictures etc.

[stuving]

Wokingham had the only mechanical signal box for miles around, which is now disused. And if you were wondering what was planned for it, this is the answer (text from the letter of notification):

Notice of intention to demolish redundant railway signal box located to the south side of Barkham Road, Wokingham, Berkshire (X:480601 Y:168594) known as ‘Wokingham Signal Box’, as well as the operational equipment building situated behind (X:480605 Y:168581).

As set out above, I am writing to notify you of Network Rail Infrastructure Limited’s (Network Rail) intention to undertake works to demolish a redundant signal box at the above location. The adjacent operational equipment building will also be removed as part of the demolition works and the area of ground will be cleared and made safe afterwards. Both buildings are shown edged in red on the photograph included in Figure 1 below.

The signal box and adjacent building are situated alongside the railway line and south-west of the Level Crossing on Barkham Road, as denoted with a red outline on the Site Location Plan enclosed within this letter. The demolition is required as both buildings area now redundant as they are no longer operational following the conclusion of the Feltham re-signalling programme.

The footbridge immediately south of Wokingham Station, on the opposite side of the Level Crossing and Barkham Road, is Grade II listed, however the signal box and adjacent building do not fall within its curtilage. The site is also not located within a Conservation Area.....

They do not actually say why they need to remove it. I presume it's just that any disused building incurs maintenance and security charges, as well as a risk of liability for injury to intruders, so they routinely plan for removal. If someone comes up with a compelling reason for retention, then maybe ...

Incidentally, since when were OS^▸ (Ordnance Survey) grid coordinates called X and Y?

[Chris from Nailsea]

Incidentally, since when were OS^▸ (Ordnance Survey) grid coordinates called X and Y?

My excellent geography teacher, Mr Stoyle at Plymstock School over 50 years ago, would have a fit if he could see that! 

CfN. 

[CyclingSid]

Incidentally, since when were OS^▸ (Ordnance Survey) grid coordinates called X and Y?[/i]

Presumably when the GIS user reads what is on their screen. Thankfully it is not Lat and Long to six digit accuracy. I assume they reference the centre (centroid) of the structures.