1. M25 Stopped Vehicle Detection (SVD)
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M25 Stopped Vehicle Detection (SVD)
Introduction to SVD

2. Background
Problem:
Vehicles stopping in live lane on Smart Motorways All Lane Running (SM-ALR)
Solution:
Radar technology detects stopped vehicles and provids alerts to RCC, en.abling early operator intervention

3. SVD Radar Schemes M25 J5-6, 27 radar sites,13 km of ALR Smart Motorway
Go Live January, 2016
M25 J23-27, 46 Radars covering 25.4 km of ALR Smart Motorway
Go Live April, 2018

4. RCC Operation Integration
Hazard warning
Incident verification
Operational
Assessment
Stopped Vehicle Detection
Incident Alert
notification
Contains sensitive information

5. Navtech Radar
The units employ a fully enclosed rotating scanning mechanism that continuously scans 360 degrees around the radar four times per second.

6. The Radar Detector Specification ClearWay CTS350 Operating Frequency
76 – 77GHz
Range Resolution
25cm
Azimuth Beamwidth
1.8°
Measurement Rate
400 per rotation
Elevation Beamwidth
Spreadbeam
Field of View
360°

7. Planning Coverage
A 3D Model is used to plan the radar locations

8. Future Developments……
SVD Application
Algorithms for MIDAS system ?
Connected and Autonomous Vehicles
Integrated Solution

9. MIDAS
Traditional sensors on UK Motorways for Queue Detection and Congestion Management applications are positioned every 500m
If an incident occurs, shown by the red cross on the picture, a resulting traffic queue will be travelling in the opposite direction to traffic.
When the queue reaches the first sensor, side-fire radar A in this case, the MIDAS system will initiate signal sequence plans for setting speed limit of 40mph, starting from the signal A.

10. Combining SVD application with MIDAS
Select two SVD sites at the existing M25 J23-27 scheme
Update the SVD system with queue detection algorithms
Generate off-line MIDAS alerts
Verify the results using CCTV as a ground truth and compare with the existing MIDAS.