HADECS or Highways Agency Digital Enforcement and Compliance System is a type of speed camera on roads in England, operated by National Highways.
History The HADECS camera was introduced in 2012.Standards for Highways
HADECS cameras have been introduced to enforce variable speed limits (VSLs) as found commonly on managed motorways - hard shoulder running in peak traffic flows.
Hadecs 3 Hadecs 3 was introduced on the M25 in Kent in April 2014, becoming active on 22 October 2014.
Two manufacturers currently hold Home Office Type Approval to supply equipment for the HADECS 3 system, those being Redflex Holdings and Dynniq.
References
External links BBC January 2015 Type Approval Orders FOI