In message , Neil
Williams writes
On Fri, 04 Jun 2010 09:56:27 +0100, Bruce
wrote:
Tube lines seem to have a headway of 2 minutes and a typical Tube
train has 7 or 8 cars.

Frequencies on the Tube are often lower off-peak and the coaches are a
bit shorter.

I think you will find that the coaches don't change length off peak.

Neither are tube trains reduced in length either (well not for many a
year)
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