Presumably these stats all relate to surface sections. It would be
interesting to learn what the highest/average speeds are in the tunnelled
sections.

Obvious constraints are the frequency of station stops, gradients and
curves - I would have thought the average speed was probably around 30 mph
or less.

Also in the case of 'tube' lines there must also be issues relating to air
pressure and resistance, the train is after all acting rather like the
piston in a bicycle pump. As a child I recall rather uncomfortable 'ear
popping' on the Northern Line section between Kennington and Waterloo.


"Andrew P Smith" wrote in message
news
In article , "Roger the
cabin boy (Lappy)" writes
Met is 50


I thought the Central went at up to 100kph?
--
Andrew
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