Cameras on M1 J13 to 12 south side

[ratboiler]

I note that attached to the upright post of the overhead gantry, there are two cameras they look like speed cameras but not sure, they are not the same as those monitoring the hard shoulder.
Any ideas

[2gins]

Google HADECS. Other search engines are available.

[Actual]

Some people say that you can be caught by HADECS. If you have an Android phone then get TomTom Speed Cameras which will alert you of HADECS.

[ratboiler]

Thanks for that yes they are the Hadecs cameras.