I also wonder where the financial return is going to come, [capacity improvements] would have to shared with other TOCs▸ .
Indeed - from input from the
Melksham Rail User Group to last year's Swindon and Wiltshire Rail study, a mapped diagram of the flows along the Trowbridge (24)to Chippenham (22) line:
As an aside, should a passing loop go in at Melksham, would there still be space there to provide passive provision for a possible second platform in some distant future?
Should there be a second track actually at Melksham Station, I believe there would be space for a platform alongside it too. I'm not so sure, sadly, if there would be space at the rear of the platform for bridge and/or shelter, though it would get a bit easier with a staggered platform. There is also space south of the road bridge for a platform on what would be the northbound side, and level (though a bit longer than is ideal access around - using the main road bridge to cross between the platforms, with a light controlled road crossing, could save the cost of an access for all footbridge, and have the traffic calming benefit (program the lights on the brow?) to provide a protected bus stop called "Melksham Station" and providing integrated transport opportunities. Somewhat academic, as I would expect the line through Melksham itself to remain single track with most of the viable loop options, only being doubled if the whole line was.
Key for diagram
To the South West
Green 1 - passenger flows Frome, Taunton and beyond
Green 2 - passenger flows Yeovil, Dorchester and Weymouth
Green 3 - passenger flows Stonehenge, Salisbury, Southampton Central, Southampron Airporrt
Green 4 - South West to London (diversion route) flows
Blue 1 and Blue 2 - Mendip Quarries (stone)
Blue 3 - Quidhampton (spoil / landfill)
Blue 4 - Southampton Docks (containers; various goods)
Blue 5 - Westbury (Track panels)
To the North East
Green 11 - Oxford, Milands, North
Green 12 - Oxford, Milton Keynes, Bedford, beyond
Green 13 - Reading and London
Green 14 - South West to London (diversion route) flows
Blue 11 - via East / West rail to northern home counties
Blue 12 - via Banbury to Midlands and north of England
On line
Red 21 - Swindon (current stations)
Red 22 - Chippenham
Red 23 - Melksham
Red 24 - Trowbridge
Red 25 - Westbury
Grey 31 - Royal Wootton Bassett (suggested)