Bakerloo line 30 tonnes, and the trains would be 17% more energy-efficient with air-conditioning included, or 30% more energy-efficient without it. The intention is that these new trains would eventually operate on the Bakerloo, Central, Piccadilly and Waterloo & City lines. Off-peak services on Bakerloo line are: This forms a 20tph service (or a train every 3 minutes) between Queen's Park and Elephant & Castle. "Note: For the former Stanmore branch of the Bakerloo line, see the Jubilee line article." Between 1917 and 1982, Bakerloo line trains continued along the DC line past Harrow & Wealdstone to Watford Junction. These stations continue
Bakerloo line extension the project with a three-platform deep-level terminus and the need to purchase 14 further trains and build a new depot for them, meant that the project became unaffordable. After more than half a century of lying largely dormant, with only the occasional proposal to extend to Peckham in the 1970s, plans for a southern Bakerloo extension were re-awakened. In 2006 Ken Livingstone, the then Mayor of London, announced that within twenty years Camberwell could have a tube station. Transport for London has indicated that extensions, possibly to Camberwell, could play a part in the future transport strategy for South London