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Colin Rosenstiel · December 30th 05, 09:42 AM posted to uk.transport.london

In article , (Peter Masson) wrote:

The report also highlights the weakness of the Airtrack proposals as
far as access to Heathrow is concerned - fine to T5, but passengers
will have to change to get to T123, and change twice, or get a bus, to
T4. But through running from HEx, Heathrow Connect or Crossrail would
involve dual voltage, not a big problem with stock, but the T5
platform lines would have to be dual voltage, instead of keeping 3rd
rail DC and OHLE AC tracks separate.

Why? Dual voltage and system platforms don't seem to be a big problem at Drayton Park and Farringdon.

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Colin Rosenstiel