Thread: Humps on tube lines
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Old January 3rd 06, 09:40 AM posted to uk.transport.london
Colin Rosenstiel Colin Rosenstiel is offline
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First recorded activity at LondonBanter: Jul 2003
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Default Humps on tube lines
In article , (Paul Scott) wrote:

"Bob" wrote in message
oups.com...
The Central London Railway began with Camel Backed Electric
locomotives hauling unpowered carriages. In order to improve
efficiency distinct humps (mini summits) were built into the track
profile at stations from Notting Hill to Liverpool Street - incoming
trains were slowed by the rising gradient whilst outbound trains
were hastened on their way by the falling out bound gradient. The
heavy unsprung locomotives were soon replaced by multiple units with
intermediate powered bogies. Does anybody know if humps are still
built into station tracks on new tube lines.

Howson's book on the Underground [1981] describes the Victoria line
as being built 'on a hump or sawtooth profile'; it is likely that the
Jubilee line was built with the same falling and rising gradients.

Not everywhere, presumably because of other constraints. The approach to the King's Cross St Pancras Victoria Line platform from Highbury and Islington is downhill into the platform.

--
Colin Rosenstiel
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