Canford Bottom Signal Operation Improvements
The A31 Canford Bottom traffic signal controlled ‘hamburger’ roundabout had a reputation of complexity, congestion and road user confusion. 4way was commissioned by National Highways to identify and implement quick-win improvements which would simplify the signal operation without necessitating changes to the local highway design.
What we did
4way undertook an initial desktop review and survey to understand how the site operated, what the problems were and develop ideas to improve the signal control. Flexibly fitting around Covid lockdowns we developed a modified style of operation, trialling it successfully on site with fixed time control. Transferring this operation into the adaptive control of MOVA (without physical upgrades) required a novel approach and for this we developed a MOVA ‘multi-node’ innovation. This enhanced the signal coordination benefits of fixed time control by varying actual green times in response to changing traffic conditions.
The changes designed and implemented by 4way have simplified the signal operation, making it more understandable and user friendly for road users. Disruptive stops and starts caused by the previous operation have been eliminated with general progression through the junction greatly improved. Road user delays have been reduced and positive feedback has been received from service providers who had previously found difficulty in maintaining the site because of its overly complex signal operation.
- Quick wins
- Traffic Signals
- Technology improvements
- Road user improvements
- Customer satisfaction
- Maintenance benefits
View our JCT Symposium Presentation for more information