That’s why SRL developed Multiphase ADS traffic signal technology: an adaptive technology that responds to live traffic conditions. Unlike traditional fixed-time lights, this innovative solution reduces congestion by up to 50%, delivering smoother journeys and safer environments. It does this by learning about the behaviour of traffic on each individual site and optimising timings to suit.
Whether you’re a contractor, local authority, or event manager, deploying portable and temporary traffic signals with Multiphase ADS temporary traffic lights can significantly improve efficiency on complex junctions and high-volume roads.
1. What Is Multiphase ADS Traffic Technology?
Multiphase ADS (Adaptive Detection System) is an intelligent Vehicle Actuation system that combines advanced radar detection with dynamic signal control.
- SRL’s is the only solution on the market which supports 2-, 3-, and 4-way junctions—a first for portable temporary lights.
- UltraLight™ and REMOS™ are plug-and-play solutions where Multiphase ADS is auto-configured, while EuroLight® and SolarLight™ require simple setup.
- Multiphase ADS uses deep-learning algorithms and radar sensors to adjust green phases in real time, ensuring traffic moves efficiently.
This means queues no longer build up unnecessarily; green lights are served based on demand, not a rigid cycle.
2. How Adaptive Temporary Traffic Signals Improve Traffic Flow
Traditional portable traffic lights often rely on fixed timings, which means vehicles can be left waiting at red lights even when no opposing traffic is present. Multiphase ADS solves this problem by:
- Using FMCW and FSK radar to detect vehicles and cyclists up to 60m away.
- Tracking vehicle movement all the way to the stop line to manage platoons efficiently.
- Extending green time for heavy flows, including accounting for HGV start lag.
- Dynamically adjusting to peak and off-peak demand.
- Correcting false starts (e.g. if a vehicle stalls) by re-serving the phase to avoid long delays.
The result is a smoother flow of traffic, less idling, and safer conditions for both road users and site workers.
3. Proven Results: Queue Reduction with Multiphase ADS (Up to 50%)
Independent modelling and trials have demonstrated the impact of SRL’s queue reduction technology:
- 50% reduction in average queue length.
- 29% reduction in maximum queue length.
- 22% reduction in average journey time, with peak-time improvements up to 40%.
- Routes with the highest traffic volumes saw journey times drop by 52%.
These proven results highlight why Multiphase ADS is being adopted on busy three-way and four-way junctions across the UK and Ireland.
4. Key Benefits of Intelligent Portable Traffic Lights for Roadwork
Choosing Multiphase ADS unlocks multiple benefits:
- Reduced congestion – halving queues keeps drivers moving.
- Improved safety – shorter tailbacks reduce accident risk.
- Lower emissions – less idling means greener traffic management.
- Better performance at complex junctions – ideal for multi-phase traffic control.
- Fast deployment – especially with UltraLight and REMOS autoconfiguration.
5. Deployment: Hire or Purchase Multiphase ADS Temporary Traffic Lights
SRL makes it easy to integrate Multiphase ADS into your project. It is available for both hire and purchase, and from July 2025 can be easily distinguished by its green faceplate. It is compatible with EuroLight, SolarLight, UltraLight & REMOS. It is not compatible with RadioLight – our most simple portable traffic signal.
It is possible to upgrade old portable and temporary traffic lights to include Multiphase ADS, please get in touch for more information if this is of interest.
6. Final Thoughts: Intelligent Traffic Systems
With the ability to reduce congestion by up to 50%, improve journey times, and deliver a safer road network, Multiphase ADS is one of the most advanced smart traffic management systems available today.
By choosing SRL, you’re partnering with the UK and Ireland’s leader in temporary traffic lights hire, backed by a dedicated team and nationwide service network.
Ready to cut queues, improve safety, and deliver smoother journeys?
Contact SRL Traffic Systems today to explore Multiphase ADS hire options for your next project.
