@Caaardiff @Philip @Rhydgaled
Your proposals require fleet enhancement, rather than mere fleet replacement, which is unaffordable. I'm not convinced that more than 2 tph is needed between Abergavenny and Crewe, and even that is more than current provision and much more than historical provision. Shropshire (excluding Telford) and Herefordshire have a low population density and higher frequency services for local traffic aren't warranted.
My proposal did not exceed 2tph between Crewe and Shrewsbury. It was 2tph (+ 3 per day) between Hereford and Craven Arms - the only parts of the route where I proposed more than that were south of Hereford (4tph +3 per day) and between Craven Arms and Shrewsbury (2.5tph +irregulars).
I would like to see a local service from Abergavenny to Cardiff, that would allow better use of things like the Pontypool and New Inn Car Park.
However, I am perfectly ok with Manchester trains [From at least Swansea] stopping at Cardiff Central, Newport, Cwmbran, Pontypool and New Inn*, Abergavenny, Hereford, Leominster, Ludlow, Craven Arms*, Church Stretton*, Shrewsbury, Whitchurch^, Wem^, Nantwich^, Crewe, Wilmslow, Stockport, Manchester Piccadilly
* These would be the calls of 1tp2h ^ These would be the calls in the other hours. All trains have 15 stops Cardiff to Manchester inclusive.
Where Craven Arms and Church Stretton are missed by the Manchester in a given hour, I would call that hours Cardiff-Chester there. Like others, I think the core pattern is Cardiff -Chester with some trains going to Holyhead and others to Liverpool.
One problem with having stops such as Craven Arms in the Manchester every two hours and in the Chester service in the other hours is that it disrupts the regularity of the service. Assuming that the stations served by both the Cardiff-Chester and Swansea-Manchester (eg. Ludlow) are provided with a clockface departure every 30 minutes, and that Manchester and Swansea each have roughly clockface hourly departures, Craven Arms etc. would have two trains 30 minutes apart then nothing for an hour and a half. In contrast, my proposed pattern gives Craven Arms and Church Stretton an hourly service between Cardiff and Chester, while still retaining a through train to Crewe every two hours (that's why my proposed 0.5tph semi-fast (Nantwich, Whitchurch and Wem) from Crewe extends beyond Shrewsbury). While alternating 2-hourly calls in two different hourly services can give a wider choice of through destinations (no changes), it can also have the opposite effect (eg. if Craven Arms and Church Stretton were served by different trains it would no longer be possible to travel between them by train without changing train (I note that you avoided this particular example) which is a good reason to provide some all-stations services).
Seeing these grand plans is good in a speculative section, but it only serves to make me believe that trains designed for quicker dwells can make more stops. With more stops in services, there is no need for additional "stoppers". The proposed calling pattern would be faster operated with a 197 than a Mk4 (which I believe holds even if more stops are taken out).
Yes my proposals are not "Intercity", and they are not designed for Mk4s. Sorry to Mk4 fans out there. IF the Mk4s have to be used then they would be on the Cardiff to Holyheads.
Remember this thread is supposed to be about what happens from around 2030-2033 after the mark 4s are life-expired and the 197s (hopefully) lease-expired. The only services designed specifically as an InterCity style service for something like the mark 4s in my proposal are the 3 per day (each way) expresses between Holyhead and Cardiff (although I would like to be able to use them on the Swansea-Manchester trains as well, I understand this is not possible with the class 67s as things stand due to the fuel range). I would have the Swansea-Manchester and Cardiff-Chester/Liverpool be operated by something similar to a class 175 but bi-mode, end-gangways and in longer formations (despite the latter service calling at every station between Cardiff and Crewe (excluding any that don't exist yet like 'Cardiff Parkway' and Caerleon)). Yes, a 197 can cope better with more stops but that doesn't mean a long-distance unit (like a 175) cannot be used on such services - ATW used both 158s and 175s on such services all the time.
I would be interested to see what the performance of a Class 231 would be on these routes, as I don't think they have run out to Manchester.
Assuming the FLIRT is as modular as its Stadler heritage would suggest, something along those lines could potentially combine a suitable interior with enough performance to merge a "stopper" into a long distance train without too much issue. FLIRTs also have the potent advantage of actual level boarding.
A class 755 would be closer to the mark, given that they only have 1 door per side on each coach rather than 2 on some vehicles in the case of the 231s. Even so, the coaches are a fair bit shorter than something like a 175, so the proportion of furnishable space would be impacted, and there are no unit-end gangways. Perhaps Stadler's reputation for building whatever the customer wants could save the day there however; the class 777 cab with its emergency exit door is probably not too far off providing unit-end gangways. As for the furnishable space, making each carriage significantly longer and/or reducing the door width to single-leaf (staying at one door per side in both cases) should solve that. In a previous forum discussion, I have been shown pictures of FLIRTs in mainland Europe (Poland I think it was) with single-leaf doors so that at least should be possible.
One thing you could do with the flexibility of a FLIRT is have some vehicles with a low floor and 2 doors for quick boarding/alighting and accessibility, and other vehicles with a high floor and one door for longer distance passengers.
TfW already have done some of that with the class 231s and 756s, and even these are for relatively short routes. Two double-width doors per side on such short vehicles would be a huge amount of standing room. As I said, the class 755s come much closer to being a long-distance FLIRT, and even they are not quite there.
The loco-hauled Mk4 trains are only suitable for true express services, for which there is not much need on the North-and-West line; the only service that might justify their continued use is the morning Holyhead-Cardiff and evening return.
Remember that TfW decided to prioritise the Cardiff-Manchester route over Cardiff-Holyhead for mark 4s, even going so far as to reduce the latter from three mark 4 services each-way daily to one in favour of the Manchesters. I don't agree with keeping just the one loco-hauled Cardiff-Holyhead; either there should be three premier express services each way or I don't really see the point of them at all.
I would also not serve Pontypool and New Inn only by alternate trains on an hourly service. For the SE Wales Metro, there should be a service every 30 minutes from Cardiff to Abergavenny calling at all existing stations plus a re-opened Caerleon, with 1 of these 2 tph extending to Shrewsbury and beyond.
Any service beyond Abergavenny/Hereford (I really think that Hereford is a more-logical terminus given the potential to change onto WMR and GWR services there) would in my view require long-distance rather than Metro rolling stock. Unless it is overtaken somewhere suitable, it would still be the service that passengers doing something like Cardiff to Crewe or Newport to Liverpool end up using.
the fastest and most direct link between the Welsh capital and England’s second city.
I thought Birmingham England's second city? If so, not sure why trains between there and Cardiff have been mentioned on a TfW topic, since Cardiff-Birmingham is not a route operated by TfW. I suppose it does raise the question of whether the Cardiff-Nottingham service (the Welsh capital's current direct* service to Birmingham) should be diverted to Manchester instead of Nottingham and extended to Swansea at the other end, with the current Swansea-Manchester cut back to Cardiff-Crewe.
* according to Railmiles, this is actually the shortest rail route, despite the straight line I drew on Google Maps 'as the crow flies' actually seeming to come much closer to the Hereford-Ledbury-Worcester route.
If there is a long term ambition for a faster route then the answer is upgrading to Bristol Parkway and then via Birmingham. That is the only way the sums to bring the difference in journey times between South Wales and Manchester stack up (by improving other aspects of South Wales too).
Why via Bristol Parkway and not via Chepstow? As well as being a less-direct route, the long block section through the Severn Tunnel constrains the number of trains that can be sent that way.
Either way, the pragmatic answer is just order a few more 197s and then get the Abergavenny to Cardiff local running.
That rather depends on whether you believe a net-zero carbon GB rail network to be a 'theoretical consideration'. If we serious about electrification in the timescales necessary to help with the net-zero 2050 target than ordering
any 197s in the first place was never a pragmatic answer to anything. If we are to make the business case for electrification as attractive as possible then we need to be cutting back on diesel-under-the-wires. More trains benefiting from electrification adds to the benefit side of the cost-benefit equation, meaning that everything new build needs to be a straight EMU or bi-mode or come with a clean plan already in place for conversion to such. Going back to the title of this topic (long-distance cfleet replacement), I would start by getting some brand new end-gangwayed-175-like bi-modes onto the Cambrian. The 21 ETCS-fitted class 197s ordered for the Cambrian would then become the prototypes for a major rebuild* of the 197s into bi-modes of some sort (prefrably IPEMU rather than diesel bi-modes, but I'm not sure if the batteries would have sufficient range). These ex-197 bi-modes would then be used on the new local services between
Hereford and Cardiff/EbbwValley etc. Further new bi-modes would then replace the mark 4s and release 197s from long-distance routes.
* which I expect to be not at all practical and therefore not pragmatic, but unavoidable if we are to eliminate diesel (at least under the wires) by 2050 due to the decision to order the damn things in the first place.
And then one of them could go beyond Cardiff, knowing the need to not terminate more there.
Cardiff is a very difficult position. On the one hand, it isn't really designed for large numbers of terminating services (no bay platforms, for example). On the other hand, it is where the 4-track GWML reduces to just a double track route through to Bridgend and Swansea (not counting the route via Barry), so capacity reduces so frequency has to reduce too meaning more terminating services.