Skip to continue
Icon of stopped vehicle

Stopped Vehicle Detection

ClearWay’s rule-based software monitors the entire width of a motorway, detecting any incidents lane by lane, in both directions, including hard-shoulder and emergency areas. The control room is automatically alerted to a stopped vehicle within 10 seconds, in all conditions, day and night, when other systems may fail.


Image of fog on motorway for stopped vehicle detection

Detection Conditions

  • Fog, snow and rain
  • Fire, smoke and hot gasses
  • Water and spray
  • All levels of light, including complete darkness and sun glare
  • Heavy traffic

Detection Types

  • Stopped vehicle detection
  • Wrong way driver detection
  • Traffic flow and queue detection 
  • Debris and pedestrian detection
  • Emergency area monitoring
  • Close following detection
Image of cars in a traffic jam. ClearWay can activate warning signs when a queue has started to form to ensure other drivers slow down.

How does SVD work?

See SVD in action

ClearWay™ is a rules-based system which analyses traffic behaviour in real-time. The high-resolution radar sensors scan 360° and can detect stopped vehicles across multiple lanes, despite poor weather and lighting. A stopped vehicle would be detected by the radar and analysed by the software. ClearWay can detect stationary vehicles, even in heavy traffic. Having confirmed the presence of a stopped vehicle, ClearWay™ will generate an alarm, informing the control room of the exact location. Operators can use this detailed and accurate information to make decisions on closing lanes or altering speed limits. Vehicles are detected within 10 seconds, meaning a rapid emergency response can be generated.

These videos show ClearWay in action when used for stopped vehicle detection. 

M25 Case Study

Image of Navtech Radar's new case study on Stopped Vehicle Detection on the M25

The M25 in London, UK is one of the busiest roads in the UK, experiencing high volumes of traffic on a daily basis. The road is in operation 24 hours a day, meaning an accurate and reliable stopped vehicle detection system is required for road user safety, 

Highways England chose to trial Navtech’s ClearWay system for SVD, installing 27 radars to provide coverage between junction 5 and 6.

According to the Highways England annual report, since the deployment of the SVD system on junctions 5-7, there has been a 42% improvement in fatal weighted injury (FWI) rate.

Why Choose ClearWay for Stopped Vehicle Detection?

  • Rapid alerts when incidents detected

ClearWay alerts the operator in under 10 seconds of identifying a stopped vehicle. This provides the operator with maximum time available to manage the situation and activate warning signs.

  • All-lanes coverage

ClearWay delivers continuous coverage of all lanes in both directions simultaneously. Emergency areas are also monitored. 

  • Pinpoints exact location

When a stopped vehicle is detected, ClearWay can provide the exact location of the vehicle on the motorway. This enables a faster and smoother emergency intervention. 

  • Low false alarm rate 

The system monitors traffic in real-time, with industry leading accuracy and low false alarm rates. These are two of the many reasons why forward thinking highways authorities have deployed ClearWay on their road networks, to make roads safer for all users.

Request a call

Let’s start a conversation – we’d be delighted to tell you more about our radar-based Intelligent Transport System solution and discuss how we can help you.

Latest Articles

Contact us for more information

Our process begins with understanding your specific application requirements. We can arrange site visits and demonstrations tailored for your individual needs.

Icon of a navtech consultant who gives advice on how to best use the radars

Consultants area

All your Clearway questions and queries answered. Visit area

Icon of spider diagram demonstrating the system speicfications

System specification

Find out about our Clearway software and sensors. Visit area

Icon of a magnifying glass examining a document to demonstrate the differences between Navtech and comparable tech

Comparable technologies

Find out how our solutions compare to other technologies. Visit area

Sign up to receive updates