I beleive four or five class 150 units were transfered to ATW for service strenthening that never happened. ATW then leased these out, but they have since returned leaving ATW with a surplus of 150s. One of these I think is now required to enable the Fishguard services, another I'd guess is indirectly covering for the 175 lost to WAG2 and another was probably covering (again indirectly) for 175002 while it was undergoing repairs. Anyway, I think ATW still have a surplus of one or two 150s, they haven't enough of anything else but 150s aren't in particularly short supply. In that respect, improvments to HOWL, as long as they require no more than 1 extra unit (and that unit has to be a 150, though perhaps on Pembroke Dock services to release a 153), might be possible.Not wishing to burst your bubble, but where is the rolling stock going to come from to allow a more frequent service to operate? I'm not familiar with the setup for south wales, but I'd be suprised if there were any units currently spare, especially now Fishguard gets a better service.
Anyway, my opinion on the Heart Of Wales line is that additional trips should not be based on the current services. I just doubt the current all-stops trains can be competitive, and alot of the stations serve very little population. I wouldn't cut the service at the minor halts to less than the current 4trains per day, but I wouldn't say most of them should have a more frequent service either.
My idea is:
- Two units stabled at Llandrindod Wells (or Shrewsbury if stabling anywhere else is such a no-no)
- These two would run to Llanwrtyd Wells in the morning where they would split.
- One unit would continue to Swansea, the other reverse to Shrewsbury
- The result being Builth Road, roughly halfway, retaining a morning service in both directions.
- These would be the first of the four all-stops services in each direction, and reach Swansea and Shrewsbury in time for 9am work/college
- The last of the four all-stops runs would be the reverse of this (ie. a Shrewsbury - Llanwrtyd service and a Swansea - Llandrindod service, with the former running back to Llandrindod in multiple with the unit from Swansea)
- In addition to the four all-stops trains each-way would be services calling at:
- Swansea
- Gowerton
- Llanelli
- Ammanford
- Llandeilo
- Llandovery
- Llanwrtyd Wells
- Builth Road
- Llandrindod Wells
- Knighton
- Craven Arms
- Shrewsbury
- That's 10 intermediate stops, versus 30 on the all-stops services, which I expect could give a drastic reduction in journey time.
I've assumed a linespeed of 50mph and a distance of 120miles. I reckon that'd be 2hrs 30mins non-stop. Obviously it won't be 50mph linespeed right through, there will be slower sections. Through sheer guesswork, I'll add 15 minutes to allow for the lower linespeeds on parts of the route, so a 2hr 45min journey time. Add two minutes (a 30secs dwell plus slow down / start up time, again guesswork) for each of my ten intermeidate stops and I come up with a Swansea - Shrewsbury journey time of 3hrs 5mins. You will probably need to add more dwell time at the passing loops, but it's only 10-15 minutes slower than via Cardiff, unlike HOWL being an hour slower at the moment. It's not enough to divert Swansea - Shrewsbury passengers to HOWL, but should make rail a heck of a lot more competetive for travel to/from destonations on the HOWL itself.