If the Trans Wilts service is still 2 trains each direction per day as per document would it be possible to retime a little later on the morning and a little earlier in the evening to provide a more conveniently timed service.
Bit of backgroundUnder Wessex trains, there was an arrival into Swindon at around 08:30 and a departure at about 17:45 (it varied by a few minutes over the years), and this is within the bounds actually set for the current (First group) franchise. In our naivety from reading the specification, we assumed that we would be retaining this train and getting one other.
The initial proposal from First was (as I recall) for a Swindon arrival just after 8, and the return service to run at 18:45, fitting in to the 08:00 to 08:45 arrival and 17:30 to 19:00 return of the SLC2 section of the franchise. First consulted on the service, and clear inputs were made from the TransWilts corridor for the morning train to be a little later, and the evening one about an hour earlier. So we were
shocked to find in the final timetable that the arrival into Swindon had gone even earlier - i.e. it had been shifted in the
exact opposite direction to the inputs that had been made. We were doubly disappointed that the Department for Transport allowed a change in SLC2 to allow an arrival at Swindon as early as 07:30 ...
Conspiracy theory would suggest that this was an example of deliberate provision of an inappropriately timed service. However, it turned out to be rather more complex. Firstly, by running the train early in the morning and at the very tail end of the afternoon peak, the hiring of a train could be saved - the set used on the TransWilts, if very early, can also provide the Golden Valley (Swindon to Gloucester / Cheltenham) commuter run, and this saving was just too tempting not to take up. The Golden Valley crowd had also complained that their train was too
late for their use, and they put a strong case that schoolkids wouldn't be able to get to school, and got their
MP▸ (who held a marginal seat for the government) to press the case, and they / he "won".
Answering your question directlyYes, it would be possible to run a service that arrives in Swindon at 08:18, and also to run a returning service at 17:35 or at 18:19. Those paths were all cleared by Network Rail for passenger service operation in February this year.
ButThere are serious concerns at simply moving the service a bit, and
there are far better alternatives.
a) If you simply move the services, you are going to re-create Golden Valley problems, or leave a unit sitting at Swindon all day doing diddly-squat.
b) Even the current unlikely times have built up a clientelle, and I would hate to see them disenfranchised
c) Would people use the new service, knowing the again-recent (see (b) ) history of service being retimed out of usabiity for people?
d) Very little corridor analysis has recently been done concerning a two-trains-a-day service at the previous times - so we don't know how it would be used.
The better - MUCH better - alternative is to leave the exisiting trains as they are, and to add in the 08:18 arrival and the 17:35 departures ... but not to leave it at that - to make use of the extra rolling stock provided to provide a service to run during the day at least every 2 hours. This was actually suggested by Jacobs in the run up to the 2006 refranchise, in an otherwise very negative report across the South West, but for some reason the suggestion wasn't included in the franchise.
By running two well spaced services to Swindon in the morning, 2 well spaced returns at the end of the day, you give no fewer than
four working day opportunities. By running that 18:19 train as well, and an earlier arrival into Swindon at 07:02, you're up to
nine working day opportunities. Not only does this suit many, many more people who travel to Swindon to work, but it also gives all of them the flexibility of being able to start and finish a little earlier of later and to know there's a train they can catch. And that's made all the more powerfully the case by running service during the day with the extra stock. Working late is possible, and a line which (paradoxically) links all the major population centres of Wiltshire but is scarcely used becomes a backbone that ties the communities together. I have an inch-thick set of documents making this case. The majority of those documents are professional analyses looking at the case to industry /
DfT» standards, and it's my belief that they should be implemented at the first timetable change of the new franchise (or before would be nice).