Project: Sustainable Urban Extension in South Woodham Ferrers
Location: South Woodham Ferrers, Chelmsford
Client: Mayer Brown
Key Outputs:
Microsimulation model (TAG compliant)
Network & junction performance comparisons
Journey time impact assessment
Video preparation
Innovation:
This project showcased our innovative approach to transport planning. We used lane change distributions and custom driver behaviours to achieve representative driver behaviour in our model.
This case study exemplifies our approach at Modelling Group: combining our technical expertise with innovative solutions to tackle complex challenges in transport planning. It highlights our ability to work closely with clients and regulatory bodies, ensuring our models meet the highest standards and contribute to effective urban planning.
The Challenge:
The proposed sustainable urban extension (SUE) to the north of South Woodham Ferrers, allocated in Chelmsford’s Local Plan, presented a significant challenge. The SUE was set to provide around 1,000 homes, a neighbourhood centre, an 88-bed care home, a primary school, extensive open space, and other associated infrastructure. The challenge was to assess the impact of this development on the local traffic network.
Our Approach:
At Modelling Group, we were commissioned to develop the traffic modelling required for this project. We developed a microsimulation model using PTV VISSIM, which allowed for the interaction of vehicles along the network. The model covered the Burnham Road link that runs north of the town and included the junctions with Willow Grove/Ferrers Road, the B1418, Hullbridge Road, and Woodham Road/Ferrers Road.
We developed a 2020 baseline model, which was suitably calibrated and validated against DfT TAG criteria for traffic flows, queue lengths, and journey times. From this, we developed 2026 baseline scenarios based on growth factors provided by Mayer Brown. We then tested development scenarios in 2026, which included a range of mitigation measures along Burnham Road.
The Outcome:
Through close collaboration between Modelling Group, Mayer Brown, the Local Highway Authority, and their term consultants, the modelling was approved and a resolution to grant planning permission was achieved in February 2023.
