Hello, it is my understanding that the max speed of all Tube lines are well publicised on the internet, and would like to know if anyone has a detailed list of which sections the full line speed is achieved?
For example, I know that the max speed of the Jubilee line is 62mph and this can be achieved in the Wembley area, but not sure if the fast section between Canada Water and Canary Wharf is also that high.
For Northern Line
Technically the maximum is 100kph (so 62mph), however these is a semi-permanent 50mph overlaid because of a long-standing issue with the braking performance of the trains. It has never been possible to achieve above 50mph since the resignalling, before that the maximum permissible was 45mph but going back beyond that maximum speed was always treated somewhat liberally.
50mph is achieved
Between each pair of stations north of East Finchley, though Barnet to Totteridge SB has a long-term TSR
Between most pairs of stations north of Golders Green
Kennington to Waterloo both roads
Clapham South to Clapham Common both roads
I think that’s it, although there are a few sections where 47mph is permitted and just about attainable.
In olden days Barnet to Totteridge SB was the practical fastest section, where it was possible to reach potentially 65-70mph.
Piccadilly Line theoretical maximum attainable can be reached in a few places, Heathrow T123 to Heathrow T5 WB, Hatton Cross to Hounslow West both roads but in different places, Oakwood to Southgate WB. There’s a couple of other particularly fast sections. However a lot of this is theoretical, and maximum speed does tend to be more strictly observed nowadays than in the past.
Victoria I believe max is 50 mph which is reached on most sections.
Central is very variable. Line speed is 100kph which was attainable on a number of open sections at both ends of the line. Since the Chancery Lane mishap maximum is 85kph. Maximum speed doesn’t seem to exceed 65kph in tunnel sections.
Bakerloo is generally fairly slow. In practice the fastest sections from memory are Harrow to Kenton SB, and possibly Harlesden to Stonebridge Pk NB.