Transport for London (TfL) and Siemens Mobility have unveiled the design of the new generation Tube trains for the Piccadilly line last week. 94 of these new trains will soon be in production to replace the current 1970s fleet. They will enter service on the London Underground’s (LU’s) line from 2025. Built in an energy-efficient way, the trains are said to consume 20 percent less energy than the existing fleet.