Really, the only way to get a reliable impression of "speed" is to look at
the total journey. It is not good enough to compare light rail "speed"
with rail "speed." You need to understand how people get from their
origins to their destinations -- including access and egress -- using
either mode and base your conclusions on that complete analysis. You may
find my "Whole System Approach" paper (which compares rail and bus project
performance) helpful.
--Jonathan
On Mon, 27 Sep 2004, Anzir Boodoo wrote:
> Morten,
>
> (posted to UTSG for info)
>
> On Saturday, Sep 25, 2004, at 09:08 Europe/London, Morten Vesterager
> wrote:
>
> > I'm recently working on a thesis (9th semester thesis in Geography at
> > Roskilde
> > University, Denmark) about the speed of Light Rail on the so-called
> > "Nørrebro-street coridor" in North West Copenhagen, Denmark. The
> > corridor is
> > suggested to be banned for cars (except police, locals, taxi and the
> > like).
> >
> > The thesis is written in coorperation with a small society
> > (www.letbaner.dk)
> > working for Light Rail in Denmark and I wonder if any of know
> > something about
> > how to calculate speed for Public Transport,- especially Light Rail in
> > populated
> > areas.
> > Any information about litterature, formulas, research(ers) and the
> > like is
> > highly appreciated!
>
> I used to work with a light rail planning team, and we used to use end
> to end journey time to gauge average speed (eg if it takes 30 minutes
> to travel 20km, then it's 40km/h), or point to point travel times,
> which were used to compare to bus timetables or estimated drive times
> to come up with a figure for time savings.
>
> I know this might sound horribly simplistic to those used to devising
> complex models, but that's really the way it's done (in the UK at
> least)!
> --
> Anzir Boodoo MRes MILT Aff. IRO
> transcience, Leeds Innovation Centre, 103 Clarendon Road, LEEDS LS2 9DF
>
-----
Jonathan E. D. Richmond 02 524-5510 (office)
Visiting Fellow Intl.: 662 524-5510
Urban Environmental Management program,
School of Environment, Resources and Development
Room N260B 02 524-8257 (home)
Asian Institute of Technology Intl.: 662 524-8257
PO Box 4
Klong Luang, Pathumthani 12120 02 524-5509 (fax)
Thailand Intl: 662 524-5509
e-mail: [log in to unmask] Secretary: Ms. Suchitra Piempinsest
[log in to unmask] 02 524-5642
Intl: 662 524-5642
http://the-tech.mit.edu/~richmond/
|