On Tue, 2 Aug 2005 18:31:12 +0000 (UTC), Mike Bristow
wrote:

When using _your_ figure of 120 pax per minute per lane - which is
somewhat optimistic and assumes ideal conditions - you still get a
answer which says that a 3 lane motorway has the same capacity as
the central line.

The fallacy in your argument is the comparison of cars with a full
train. You ought to be comparing 80-seat coaches with a train to get
the true figure. With a 2-second interval, that is a coach every 176
feet at 60 mph or about 4 coach lengths. If you can get that density
of seating (not seated and standing) on your train, you will be doing
very well.
--
Terry Harper
Website Coordinator, The Omnibus Society
http://www.omnibussoc.org