We are told by a Transport for London (TfL) press release that 'state-of-the-art technology' will increase the lifespan of the Elizabeth line with a rail milling train and two multi-purpose engineering trains, with delivery to London later this year. TfL says:
'The 48 metre long rail milling train is the first of its kind to be used in the UK rail industry. It is able to scan the rails using electromagnetic crack detection, looking for any defects. If it identifies any issues with the track, it can mill the surface of the rail to remove defects and cracks, reducing wear on the new Elizabeth line train wheels and the tracks'.
If this can be done for the Elizabeth Line, why cannot such a machine be purchased for the Northern Line, to reduce the noise from corrugated rails that is causing such misery to so many people living near the Northern Line: should they not have priority over a track that has not even been used yet?