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Traffic Capacity and Performance Analysis for Alawoona Avenue Roundabout, Mitchell Park

Client

City of Marion

Location

Alawoona Avenue and Bradley Grove Roundabout, Mitchell Park, South Australia

Sector

Traffic Engineering and Performance Analysis

The City of Marion is committed to ensuring its transport infrastructure can meet current demands while accommodating future growth. To evaluate the operational performance of the Alawoona Avenue/Bradley Grove roundabout in Mitchell Park, BE Engineering Solutions (BEES) was engaged to conduct a traffic capacity analysis and develop a comprehensive SIDRA model to provide actionable insights into the roundabout’s performance.

The Challenge

The Alawoona Avenue roundabout is a key intersection in Mitchell Park, serving residential, commercial, and local traffic.

Several challenges required detailed assessment and innovative solutions:

  • Increasing traffic volumes due to anticipated population growth and new land developments in the surrounding area.
  • Assessing the roundabout’s current operational performance to identify potential bottlenecks and inefficiencies.
  • Forecasting future performance under various growth scenarios to support long-term planning.
  • Ensuring that the roundabout provides a high level of service for all users, including vehicles, cyclists, and pedestrians.

Our Approach

BE Engineering Solutions employed a data-driven and forward-thinking approach to address the project’s objectives:

  • Conducted detailed traffic counts and flow analysis to understand the current usage of the roundabout.
  • Evaluated operational performance under existing conditions, focusing on key indicators such as congestion, delays, and flow efficiency.

Created a comprehensive SIDRA model (Signalised and Unsignalised Intersection Design and Research Aid) to simulate traffic flow and operational performance.

  • Degree of saturation to measure how well the roundabout handles current and projected traffic volumes.
  • Average delay experienced by vehicles navigating the roundabout.
  • Level of service (LOS) to determine the efficiency of the intersection for all road users.
  • Impact of population growth and nearby land developments on future traffic patterns.
  • Modelled multiple growth scenarios to predict how the roundabout would perform under increased traffic demands over time.
  • Provided recommendations for potential upgrades or modifications to ensure the intersection remains functional and efficient in the long term.

Delivered a detailed report to the City of Marion, summarising findings and offering clear, actionable recommendations.

Outcome

The insights provided by BE Engineering Solutions supported the City of Marion in optimising the Alawoona Avenue roundabout’s performance.

Key outcomes included:

  • A thorough understanding of the roundabout’s current and projected operational performance, enabling data-driven decision-making.
  • Identification of potential future challenges, allowing the council to plan proactive infrastructure upgrades.
  • A robust and scalable SIDRA model that serves as a valuable tool for ongoing traffic management and planning efforts.
  • Recommendations that balance efficiency, safety, and accessibility for all road users, ensuring the roundabout supports the community’s growth and development.

Why choose BE Engineering Solutions?

BE Engineering Solutions specialises in delivering traffic analysis and modelling solutions that help councils and developers plan for the future. From in-depth operational assessments to forecasting growth impacts, our expertise ensures transport infrastructure remains efficient, safe, and sustainable.

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