SPECS at Roadworks

Most major roadworks schemes around the UK are controlled using SPECS average speed enforcement cameras.


Jenoptik are the market leaders in roadworks enforcement solutions, having delivered successful schemes on every major motorway in England, Scotland and Wales.

Road works are by their very nature a hazardous environment, so the design and operation of the enforcement scheme is particularly important. SPECS average speed cameras are used because the reduce the risk that high speed vehicles will enter the works zone, whilst also improving flow conditions despite the possible presence of narrow lanes, construction vehicles and temporary road surfaces.

Data from SPECS controlled schemes shows that vehicles travel through the works at a steady, uniform speed. By removing speed variability between the fastest and slowest vehicles, the occurrence of sudden ‘shock wave’ braking is largely eliminated. This means that collisions are less likely, but traffic also flows better,allowing journey reliability to be maintained.

Works for the M1 J6a-10 motorway widening project won a Prince Michael International Road Safety award, where the roadworks were significantly safer than the motorway had previously been.


  • Fewer injury collisions occur in SPECS controlled works
  • Construction workers feel safer whilst working close to the live carriageway
  • Journey reliability is improved
  • Congestion through the works and around junctions is reduced
  • 85th%ile speeds are consistently just below the posted 50mph limit
  • Compliance is seen through the works zone, not just the camera locations
  • Typically, only 1 in 10,000 vehicle journeys results in a ticket

Find a solution that matches the requirements for your application: