Minnerva has provided significant
support to Mouchel Essex in a project for Medway Council that aimed
to advance initial proposals for an enhanced public transport system
in the Medway area. The work relates the data survey and modelling
needs required to satisfy the UK Department for Transport's Major
Scheme Appraisal procedures.
This led to the definition of a software modelling
framework which recognised that no one modelling package could satisfy
all of the types of modelling required for the area; which went
beyond the initial objective of enhancing public transport in the
area. This meant it was necessary to consider using sets of models
that could be used independently of each other, although using a
common and consistent data.
Building such a modelling framework can be overwhelming
when considering scope, implementation and cost. To address this,
an objective was to define an approach that was largely incremental
in nature and more readily manageable than one that emphasised one
or just a few large component steps.
However, adopting an incremental approach generates
its own problems as the existing increments can be unsatisfactory
in meeting transport scheme and policy interests, which are not
necessarily incremental in nature. Also several increments can easily
lead to costly inconsistencies and discontinuities that undermine
the achievement of the objectives.
A conceptual and operational framework was defined
to deliver capabilities with relevance to meet planning needs and
in a suitable order of priority; the framework was derived from
consideration of transport policy, modelling, and management issues.
Facilities were defined that helped make the framework operational
and responsibilities were identified so that work effort could be
structured and managed to best effect.