Hi,
I'm reviewing the strengths and weaknesses of the traditional 4-step
sequential transport model and I'm looking for practical examples of some
of its failings (or some of the underlying assumptions that are
sometimes/typically violated). I'm not worried (at this stage) about
failure to get some of the input variables correct as I'm dealing with
those separately. I'm more interested in the 'internal workings' of the 4-
stage model itself.
So, for example, one issue would be the fixed trip matrix assumption. I'd
be very interested to hear of any other weaknesses that modelling
practitioners have faced which perhaps have limited the use of the model
or have caused you to place caveats on modelling results.
Many thanks in advance.
Rob Bain
ITS Leeds
|