Docklands Light Railway B90, B92, and B2K Stock
…car numbers, and a system upgrade to allow 3-digit car numbers did not take place until a few years after these cars were introduced, but before the B07 rolling stock was delivered. Following the arrival of the B2K trains, the B90/B92 trains were refurbished by Alstom at Wolverton railway works between 2004 and March…