Bath & North East Somerset Council partnered with AGD Systems, part of The Traffic Group (TTG), and technology partner Coeval to trial a new approach to SCOOT (Split Cycle Offset Optimisation Technique) traffic sensing.
Using AGD’s 650 radar-based detectors integrated with Coeval’s wireless data link, the project sought to prove that reliable SCOOT performance could be achieved without the need for traditional hardwired infrastructure.
Challenge
Urban traffic management systems depend on accurate, real-time data from roadside detectors. Traditional loop-based detectors are costly to install, require disruptive roadworks, and can be prone to failure over time. Bath faced the dual challenge of needing a robust replacement for aging detection infrastructure while also seeking more sustainable, cost-effective, and less disruptive alternatives for the future.
Solution
AGD deployed its AGD650 multimodal radar detectors mounted on existing street lighting columns. Each unit provided two independent detection zones for vehicle monitoring. Rather than relying on wired connections, the detectors were paired with Coeval’s Wi-Fi unit, which transmitted data directly to a Siemens ST900 traffic controller.
This wireless integration offered:
- Rapid installation with minimal disruption to road users.
- Reduced costs compared to traditional hardwired setups.
- Flexible, future-proof performance, enabling scalability across the network
Results
The system was installed on Bath’s A36 Lower Bristol Road and has been operating smoothly since February 2024. Key outcomes include:
- Consistent and reliable SCOOT performance using standard zone sizes
- Seamless real-time data transmission via wireless links
- Positive operational feedback from maintenance engineers already familiar with AGD technology
- Zero significant technical challenges, proving the robustness of the approach
“Using a wireless link to relay real-time inputs from the sensors to the traffic controller showcases the flexibility and reliability of our AGD 650 units. We’re proud to be enabling smarter, more connected systems with minimal on-site disruption.”
Greg Baker, Technical Sales Manager, AGD Systems
“This technology provides us with a viable repair option and robust performance. As further loop-based detection fails across our network, we will continue to deploy this technology where suitable.”
Jackie Davies, Bath & North East Somerset Council
Impact
The Bath trial demonstrates that radar detection combined with wireless data transfer can deliver reliable SCOOT traffic sensing while significantly reducing installation complexity and long-term maintenance challenges.
With its success, the project sets a benchmark for future smart city deployments, showing how wireless, low-maintenance solutions can improve traffic management while minimising disruption and supporting more sustainable urban infrastructure.