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What is the best Stopped Vehicle Detection system?

There are many benefits with a Smart Motorway network, including a strong and consistent ‘flow up, incident down’ rate. This is the destination that everyone is driving towards. 

What makes a truly reliable Stopped Vehicle Detection (SVD) solution?
ClearWay interfaceshowin stopped vehicle detection technology in action

ClearWay alerts the control room to a stopped vehicle within 10 seconds. Operators are then notified of the exact location of the incident.

To be truly effective at mitigating risks, an SVD system must satisfy a challenging list of requirements. Firstly, a SVD system must provide near to instant detection times. Additionally, it must offer continuous coverage of every possible location on a motorway where a vehicle could stop – including Emergency Areas. 

It must perform in all-weather and light conditions that may occur on a motorway. From rain, fog and snow, to glare, spray and even smoke, it is in these more challenging conditions that the system is needed the most. 

Tried and tested

Pilot studies have already proved the value of an effective system. A recent SVD trial using 27 radar sensors between junctions 5 and 6 on the M25 motorway that circumnavigates London, successfully demonstrated a substantial reduction in the time taken to identify stopped vehicles in all parts of the motorway.  

Each sensor monitored a 700-metre stretch of road in both carriageways, covering all lanes and providing detection in any location a vehicle could stop. It detected stationary vehicles within seconds. Then it sent an alert instantly, resulting in a 94% reduction from the original 17-minute average using existing processes. Operators were able to immediately investigate and verify the alert.  

The system's benefits impressed the UK Chartered Institute of Highways and Transportation (CIHT) and Department for Transport (DFT). As a result, they awarded it their Technology Award in 2018. 

It’s also no surprise that Norway and Sweden – both ranked European top-three performers in road safety by the World Health Organisation – are long-time advocates of this type of radar technology.  

Read the full article "Using radar to address the stopped vehicle detection challenge" in Smart Highways magazine.

Image of the M25 where stopped vehicle detection technology is deployed

The ClearWay SVD system deployed on a stretch of the M25 impressed the CIHT and DfT, who awarded it their Technology award in 2018.

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