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TfW class 398 Stadler Citylink tram trains

AdamWW

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398030 making itself known, running a full day in service all being well!

Indeed. And if I'm reading Realtimetrains correctly, not just running a passenger service until nearly midnight unlike before but also running in passenger service between Taffs Well and Pontyridd at the start and end of service instead of doing that bit as a non passenger service as has previously been the case.
 
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positron

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How do we think the cascade will work - introduce a few units are a time or a wait until a substantial number can move over?
They have to do training still so presumably they'll take any they can for that and by the time that's done a number will probably be transferred already.
 

AdamWW

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398030 making itself known, running a full day in service all being well!

Unfortunately it seems all hasn't been well.

It appears to have got out of the depot and managed to do Taffs Well to Pontypridd in service but then failed.

== Doublepost prevention - post automatically merged: ==

Unfortunately it seems all hasn't been well.

It appears to have got out of the depot and managed to do Taffs Well to Pontypridd in service but then failed.

After some cancellations, looks as if 398 022 has just picked up the service heading south from Taffs Well.
 
Last edited:

chargesmith

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14 Nov 2023
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Great to hear that they are back in service, especially as I'm commuting tomorrow, will try and ride one if they are out.

Also looks like they ard planned to run in the evening too. Fingers crossed.
 

AdamWW

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I just had the unusual experience of travelling on a 398 after 4.

Despite the heat outside, when I got on I was met by a blast of reasonably frigid air. It seems that the air conditioning can work when it really wants to! This was at the front.

The centre of the train seemed somewhat warmer, as did the rest of the train. So it didn't just seem to be that it's cooler near the cabs.

The guard was working the doors - I don't think I've seen them with driver worked doors for a while now.

I do like the enormous windows.

And they don't half accelerate.
 

chargesmith

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Didn't get to ride 022 this morning but I did see it waiting at the red signal at the top of the Bay branch line.

From my vantage point on a train going into Central it looked to me that the front lights were very bright even in the bright sunshine.

Whatever issues they were having to make them feel the need to yellow wrap the fronts during testing look pretty much resolved to me, not that I know what the standards are for them.
 

Peter Sarf

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Croydon
Didn't get to ride 022 this morning but I did see it waiting at the red signal at the top of the Bay branch line.

From my vantage point on a train going into Central it looked to me that the front lights were very bright even in the bright sunshine.

Whatever issues they were having to make them feel the need to yellow wrap the fronts during testing look pretty much resolved to me, not that I know what the standards are for them.
My guess is the headlights were OK for rail use. But were too bright (not dipped etc etc) for road standards.

So dimmer lights and yellow paint was the compromise. It won't stop a pedestrian stepping in front either way (as seen in Croydon with buses and trams) !.

Now perhaps technology is automatically varying the brightness depending on environment (rail line vs street running).
 

chargesmith

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My guess is the headlights were OK for rail use. But were too bright (not dipped etc etc) for road standards.

So dimmer lights and yellow paint was the compromise. It won't stop a pedestrian stepping in front either way (as seen in Croydon with buses and trams) !.

Now perhaps technology is automatically varying the brightness depending on environment (rail line vs street running).
That doesn't make sense to me as while on test they were only ever on private rail infrastructure with no street running, and to my knowledge all pedestrian crossings on the TAM lines have been closed - so whatever the issue was, I can't see that it would have been anything but rail-related.
 

The exile

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That doesn't make sense to me as while on test they were only ever on private rail infrastructure with no street running, and to my knowledge all pedestrian crossings on the TAM lines have been closed - so whatever the issue was, I can't see that it would have been anything but rail-related.
The issue could have been raised and for once someone had the sense to deal with before it became a show-stopper. Dimming the lights so they could be used on the road would then make it rail-related, especially if the decision was made that you couldn’t always rely 100% on the lights being at “rail brightness” on rail.
 

tfw756rider

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Wales (sometimes in England), thanks for replying!
Didn't get to ride 022 this morning but I did see it waiting at the red signal at the top of the Bay branch line.

From my vantage point on a train going into Central it looked to me that the front lights were very bright even in the bright sunshine.

Whatever issues they were having to make them feel the need to yellow wrap the fronts during testing look pretty much resolved to me, not that I know what the standards are for them.
My guess is the headlights were OK for rail use. But were too bright (not dipped etc etc) for road standards.

So dimmer lights and yellow paint was the compromise. It won't stop a pedestrian stepping in front either way (as seen in Croydon with buses and trams) !.

Now perhaps technology is automatically varying the brightness depending on environment (rail line vs street running).
That doesn't make sense to me as while on test they were only ever on private rail infrastructure with no street running, and to my knowledge all pedestrian crossings on the TAM lines have been closed - so whatever the issue was, I can't see that it would have been anything but rail-related.
The issue could have been raised and for once someone had the sense to deal with before it became a show-stopper. Dimming the lights so they could be used on the road would then make it rail-related, especially if the decision was made that you couldn’t always rely 100% on the lights being at “rail brightness” on rail.
Another user and I posted about this in post #1,988:
Some photos from today's test runs show 398024 and 398028 without their awful yellow bumper stickers, maybe the lights are finally sorted out, they do seem closer than ever to service!
Yes - from what I understand, the software now has a brighter 'train mode' for the headlights that has allowed the units to be "de-yellowed", and can now switch to the previous, lower brightness level as the 'tram mode' for non-dazzling street running.
 

chargesmith

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The issue could have been raised and for once someone had the sense to deal with before it became a show-stopper. Dimming the lights so they could be used on the road would then make it rail-related, especially if the decision was made that you couldn’t always rely 100% on the lights being at “rail brightness” on rail.
Ah OK - that does make a bit more sense, thanks
 

Peter Sarf

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That doesn't make sense to me as while on test they were only ever on private rail infrastructure with no street running, and to my knowledge all pedestrian crossings on the TAM lines have been closed - so whatever the issue was, I can't see that it would have been anything but rail-related.
And actual street running affecting drivers of road vehicles is not yet happening even with the Cardiff Bay branch switching over to line of sight etc working. Its all still off road (as in not on highways). But the lights would likely have been set up for road compatibility before testing or even at the point of 398 construction.

But my thoughts were that for the lights to be dim enough for road sections then the 398s would be too dim for rail safety purposes so the ends were painted yellow. Yellow ends is the solution for trains with dimmer headlights - or should I say marker lights ?.
 

AdamWW

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But my thoughts were that for the lights to be dim enough for road sections then the 398s would be too dim for rail safety purposes so the ends were painted yellow. Yellow ends is the solution for trains with dimmer headlights - or should I say marker lights ?.

They were yellow (some kind of "wrap" I think, not paint) but all the ones out and about now seem to have reverted to fully grey ends.
 

positron

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That doesn't make sense to me as while on test they were only ever on private rail infrastructure with no street running, and to my knowledge all pedestrian crossings on the TAM lines have been closed - so whatever the issue was, I can't see that it would have been anything but rail-related.
Btw there's still level crossings on TAM lines, there's just less than before. Cwmbach for example still has one.

It would be interesting to know what they did do with the lights but like others said it's probably some changes to make them less of an issue for street running.

Re-street running didn't they need a different wheel profile at one point. But there's no mention of that now so I'm guessing that perhaps even Cardiff crossrail isn't an issue with standard rail profile wheels?
 

Peter Sarf

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Yes - from what I understand, the software now has a brighter 'train mode' for the headlights that has allowed the units to be "de-yellowed", and can now switch to the previous, lower brightness level as the 'tram mode' for non-dazzling street running.
I should have remembered this (only a month ago). But it means the tram-trains can/should/will adjust their headlights depending on what/who they are sharing their "road" with.
 

Zoomer

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16 Oct 2023
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S Wales
Saw these at Taffs Well station this evening, heading down to the depot. Forgive my ignorance but is this one pulling the other one? As it happens, this was my first time seeing any 398 while out and about.


IMG_7599.jpg
 

Peter Sarf

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Saw these at Taffs Well station this evening, heading down to the depot. Forgive my ignorance but is this one pulling the other one? As it happens, this was my first time seeing any 398 while out and about.


View attachment 208271
Great picture.

Symmetrical and more. Shows two units coupled (and we needed that as it seems multiple working has really started). No one can say it was on a test track somewhere in Europe as that is definitely South Wales and a normal rail line with a ("the") station name framed so beautifully. Look - no yellow ends.

Nice capture.
 

chargesmith

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14 Nov 2023
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South Wales
Also love the picture too.

I have a question though why only one external cab door ? Is this commonplace on tram-trains ?
Probably a space saving measure, haven't seen inside the cabs but am guessing the control boards for the safety switches etc are on that wall which means the cab can be smaller than if a cab door on each side was required, increasing the passenger cabin space. Unsure if this is common or not.
 

nigelsporne

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20 Dec 2012
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Coleshill
I noticed whilst watching the Depot last week, but don't know if this is just coincidence, that late evening the unit that does the following morning's run goes into the smaller shed on the right of the main buildings. No idea what this shed is for but I assume somebody does.
 

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