The Wellington Transport Analytics Unit own and operate a range of transport models on behalf of partners. These models can be split into two types – strategic, regional transport models and local operational transport models.
The models provide the evidence base to design and evaluate policy interventions and support the development and assessment of transport projects
The strategic transport models operate using the EMME software platform
EMME is a multi-modal transport planning software that is used worldwide. The Wellington Transport Analytics Unit have two models that have been developed in EMME – Wellington Transport Strategy Model (WTSM) and Wellington Public Transport Model (WPTM)
The software combines “off the shelf” functionality with the ability to develop a bespoke 4-stage strategic transport models (trip generation, trip distribution, mode split, assignment) to fit local data sources and analytical requirements.
INRO | Emme (inrosoftware.com)
What’s New in Emme 4.6 (inrosoftware.com)
The strategic modelling tools provide a regional representation of travel patterns, and are used for design and evaluate policy interventions and to support the assessment of transport improvement options.
The models are as follows:
These models were last updated over the period 2020 to 2023 with the purpose being improve and add functionality, refresh behaviour assumptions and identify known weaknesses to develop a set of tools that can be used for the strategic assessment of transport investment and policy.
These local operational models run using the AIMSUN Software Platform
AIMSUN Next is a multi-resolution modelling platform that simulates mobility in networks of all sizes. The Wellington Transport Analytics Unit operate and maintain AIMSUN models of Wellington City and Hutt City and are about to develop a new model covering Porirua City.
These models focus on representing traffic demand, using the AIMSUN Hybrid structure whereby large areas can be modelled with mesoscopic simulation, together with added levels of detail within areas such as Wellington CBD where microscopic simulation is required.
The Operational Transport Models are developed using the AIMSUN software platform. These micro-simulation models are used for detailed scheme design, signal and network optimisation and management of the highway network.
The models that the Wellington Transport Analytics Unit own and operate are as follows:
A number of visualisation tools have been developed in order to share model outputs with clients. Below are some examples of the kind of outputs that can be produced from the AIMSUN models
Please note that the scenarios are indicative, and any numbers should not be reported for project specific purposes.
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We provide documentation relating to all model updates so that interested parties can understand how the models have evolved through time. Let's have a look!