Driving Enforcement Systems

HADECS, a constantly evolving highway enforcement system

Speed regulation is a vital part of safe driving and smooth traffic flow. Not only does it keep road users safe and help prevent congestions, it can even have positive environmental effects. With these goals in mind, we launched a unique Highway Agency Digital Enforcement Camera System in 2000 – HADECS, which is capable of enforcing variable mandatory speed limits across motorway lanes. The HADECS system combines speed detection with image capture and data transmission; the speed cameras it is commonly known for are installed along motorways across the UK. This system has evolved from a single-lane system to the latest HADECS3 version, which enforces variable mandatory speed limits on up to four lanes. With this third version currently in use, the next generation, HADECS3X, has already been developed and is pending approval.

HADECS3: tested, certified, improved

  • Combines speed detection with image capture and data transmission to enforce variable mandatory speed limits on up to four lanes
  • Has Home Office Type Approval (HOTA) since 2016Driving Enforcement Systems
  • Subjected to a rigorous design, development and test regime
  • Optical recognition techniques
  • Redeveloped system architecture for easier Radar recalibration
  • Data encryption techniques to ensure safe and secure transmission of evidence

Keeping motorways running

Across the UK, certain stretches of motorway are now so-called ‘smart motorways’. These sections use active traffic management techniques and variable speed limits to automatically adjust to changing traffic flows: they can adapt to a temporary change in speed limit and to open the hard shoulder to increase capacity and keep traffic flowing during busy periods.

‘Stealth cameras’

Dynniq has contributed to these smart motorways with the HADECS3 solution: cameras that enforce variable speed limits across multiple lanes and use an external aspect verification system with optical recognition techniques to respond to aspect changes. This technology eliminates the need for a physical link to the signals. Additionally, a non-intrusive, secondary speed check removes the need for white lines on the road surface. Combined with the new subtle grey colour of the cameras (as opposed to the traditional, highly visible yellow), the lack of visible markers has earned this system the name of ‘stealth cameras’.

Dealing with increased complexity

HADECS was originally developed for Highways England 20 years ago. As traffic flow and management grow increasingly complex, Dynniq has continuously undertaken the development, approval and maintenance of each new HADECS generation (versions 1, 2, 2.5 and 3). Each new system rises to the challenge of keeping drivers safe and motorways less congested.

The current HADECS3 version combines radar technology for speed detection, cameras for image capture, and data encryption techniques to ensure safe and secure transmission of evidence files. Compared to previous versions, this system can monitor multiple lanes. Meanwhile, we are busy working on HADECS3X, which can also monitor closed lanes.

Home Office Type Approval

This system comprises in-station and out-station equipment (software and hardware) and has been developed and tested in accordance with national requirements. The approval process also included a comprehensive set of certification tests by independent test houses and an extensive programme of test track and on-road testing, undertaken on behalf of the Home Office. Home Office Type Approval (HOTA) is a highly valued industry certification, which the HADECS3 system achieved in early 2016.

The HADECS 3X (Red-X) system is currently in the assessment stage with the Home Office. Due to the current COVID-19 crisis, a final sign-off is hard to predict but we hope it will be towards the end of 2020.