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Quantum Traffic offers specialist microsimulation modelling, for projects where detailed traffic analysis is required.

Microsimulation modelling undertakes analysis on a vehicle by vehicle basis, modelling the interaction between individual vehicles on the road network. This allows for comprehensive analysis of road operation and traffic impacts.


Quantum Traffic utilises the Aimsun microsimulation software package that is recommended by many road authorities around Australia.

Given the detailed nature of the analysis, Microsimulation modelling generally incorporates
the following stages: 

  • Existing Conditions Data – A high level of existing conditions traffic data is required to support these detailed models.  Typically, this includes turning movement counts, origin-destination surveys, queue length surveys and travel time surveys.

  • Calibration & Validation of Existing Conditions Model – A critical stage of the modelling process, where the model outputs (travel time, queue lengths, etc.) are assessed against the existing conditions data to confirm the model appropriately reflects the existing road network.  This process is documented in a high quality report, which is submitted to the road authority for approval.

  • Development / Test Scenario Modelling – The final stage of the microsimulation modelling process is to run the test / development scenario.  These typically include the traffic volumes associated with the proposed development, background growth on the road network and any anticipated road network upgrades.  These scenarios allow for the impacts of the proposed development to be quantified and assessment of any road network upgrades that are required.  The results of this process are incorporated into a report to documents the modelling process.

The key benefits of the microsimulation modelling include

  • Able to model large areas including multiple roads / intersections.

  • Better analysis of the interaction between multiple intersections.

  • Allows for detailed traffic signal modelling, including demand based signal phasing / timing.

  • Incorporates public transport services including buses and tram / light rail.

  • Accurate results due to the rigorous Calibration & Validation process.

  • Visual simulation outputs allow for better articulation of issues / solutions to stakeholders.


Case Study:

Quantum Traffic has recently completed a microsimulation model for a new school in suburban Canberra. The model covered a large area including 3 key arterial roads and 18 intersection.  Critically, a section of the arterial road network included the recently completed Canberra light rail.


A key element of the Calibration & Validation stage was the assessment of the model against traffic data collected during the COVID-19 pandemic.  A range of data sources were utilised to ensure that the model was not impacted by lower traffic volumes associated with various government implemented lockdown. 

The development modelling included allowance for surrounding development, including a large residential subdivision with 1,500 dwellings.  Growth on the broader road network was established from the Canberra Strategic Transport Model (CSTM).

Models scenarios were developed for 2023 and 2031 to assess the impacts into the future and recommend road upgrades to support the development of the school.


Hamish McDonald - Senior Transport Engineer

(02) 6243 3672


Keep your process in motion and minimise setbacks at VCAT. Expert report delivery by an experienced traffic engineer is available through Quantum Traffic.


For a free, no-obligation quote, call us now on (04) 3836 5681, or fill in our simple contact form.


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