Clive D. W. Feather wrote:

In article , Dave Arquati
writes

Of course what's been said about a double frequency bendy bus in place
of a tram, but with all the requisite infrastructure except for tracks,
is precisely what the East London and Greenwich Waterfront Transit
schemes are about.


Furthermore, my understanding is that the schemes are being designed so
that they can be upgraded to trams at any time.

Yes, this seems to be the case... GWT seems to have been designed very
much with trams in mind, since it has no sharp bends, and either cuts
across the centre of roundabouts or replaces them with crossroads.

The main difference with where trams are being chosen seems to be where
the predicted volumes of traffic make the environmental benefits of
fewer trams outweigh their increased costs over a very high frequency
of buses.

CRT mentioned 80 (!) trolleybuses per hour over the central section at
peak periods, as opposed to 40 trams.


Um, when I went to a presentation by a man from TfL, it was 110 (!!)
trolleybuses rather than 40 trams. That's just not workable.

I make that a trolleybus every 33 seconds? How were they supposed to
make it across the Euston Road traffic lights without bunching badly?
And that's the only non-transit-priority junction on the route...
imagine the chaos caused to other road traffic.

--
Dave Arquati
Imperial College, SW7
www.alwaystouchout.com - Transport projects in London