Transport Scotland [TS] has known for more than 5 years that "new" rolling stock was needed for East Kilbride /Barrhead services mostly due to the demise of the class 156 fleet, which was built in 1986. Either EMUs or BEMUs were required to replace c156s, and these could have been secured from a variety of sources, but once again TS went straight to the "answer" of putting up wires rather than a rolling stock solution. Therefore the procurement of the required rolling stock has been overlooked, until it is too late, given the need for staff training and potential infrastructure support works before December 2025.
The blind faith in funding the installation of wires on the EK branch, rather than already securing modern non-diesel rolling stock, better suited for the commuter/ suburban line is another example of where TS & Scot Government are not prioritising passengers needs. In addition by relying on sloth-like infrastructure delivery they are also failing to follow the principles of the Rail Decarbonisation Action Plan, & the linked Fleet Strategy, which should drive this overall aspiration to move forward quickly and efficiently with the removal of diesel units ahead of the "dream" pf full scale electrification.
The funds for wiring the 22kms of the EK branch [c£80M] should have been re-focussed on the line south of Barrhead towards Kilmarnock and to accelerate Dalmeny /Fife wiring. This better use of scarce resource should then have enabled a larger battery electric fleet/s to be procured and introduce partial electrification across these routes freeing up DMUs long before full scale electrification would ever be achieved. TS should have instructed ScotRail, in 2020/21 to secure either a new BEMU fleet or re-purposed EMU fleet with batteries fitted eg-[c321s/ c350-2s / c380s / c385s] which would have also helped free up class 158s in the east to then allow all class 156s to be fully withdrawn in 2025.
Thankfully passengers will see, long needed, significant improvements to facilities and accessibility along the route but due to this lack of forward thinking on the rolling stock side it should be noted that once all the works are completed in late 2025, as it stands, there will be no seating capacity increases, no journey time reductions, no drivers opening doors to reduce dwell times and some EK services will still be operated by diesel trains. Given this underwhelming outcome it may be hard to convince rail users that the 5 months of closures and the total investment in new wires will all be worth it.