Here, I'll try to address some of the tangential points raised in this thread so far.
Land Use
========
The issue of land-use and density has come up several times, and I've
been asking around local authorities as to what sort of data is
available electronically. Currently, very little, but that's changing
fast, as part of the work towards the National Land Use Database for
Britain <http://www.nlud.org.uk>. If anyone knows of other sources,
do please let me know.
Heterogenous Modelling
======================
On 10 Dec 2001 at 20:41, Alasdair Turner wrote:
> If we are going to do this properly I think (and I suspect many others
> do as well) it is time to really do some heterogenous modelling ---
> from the looks of things, Jake and Juan are starting along this route
> already --- perhaps a topological / metric graph weighted by the
> transportation network and land use --- or my own favourite of agents
> using space syntax-based decision processes weighted by land-use and
> from modal interchange surveys.
I've been contemplating this sort of development. As a disaggregate
demand modeller, I've been had a bit of confidence in the multiple-
regression models I've worked with, for the combined mode-choice/
distribution models and trip-generation models. But the assignment
and land-use models were always weak. So I've been intrigued by the
opportunities Space Syntax offers for route-choice, and I'm starting
to examine the potential that agent-based systems have to offer a
combined land-use transport model.
Modal Shift
===========
There still remains the issue of how we model those cities that have had revolutions in the amount
of walking going on in them - York (GB), Copenhagen (DK), Munich (DE) and others. All
observations, thoughts and suggestions welcome. Did they engineer seismic changes in spatial
depth? Or were other factors at play, and can we quantify them, and transfer them to a
forecasting framework for other cities?
Continuous flow data
====================
I've investigated the possibilities of using CCTV (aka webcams here), but those with the cameras
have all raised the issue of Data Protection, and we've been told fairly consistently that getting
access would be very difficult, and we may have to have a two year wait between collecting data
and us getting access to it.
Andrew Smith
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