From a post of mine 8 months ago:
From Hansard:
Sir Greg Knight: To ask the Secretary of State for Transport how many types and number of cameras are in use on the M42 motorway; what information is collected or detected by them; and whether such cameras are used to detect breaches of both the national speed limit and the managed motorway limits. [186153]
Mr Goodwill: There are four types of cameras in use on the M42 which are owned and operated by the Highways Agency.
There are 16 fixed automatic number plate recognition cameras (ANPR) which are used to measure journey time reliability by detecting the movement of partial vehicle number plates between defined links on the motorway. These cameras are not used to detect breaches of speed limits and the number does not include ANPR cameras which are wholly operated and maintained by the police and are subject to Home Office regulations.
There are 190 fixed monitoring cameras. These are used by the Highways Agency Regional Control Centre to ensure that the hard shoulder is clear of stationary vehicles, debris or other obstructions before opening the hard shoulder as a live running lane. These cameras are not used to detect breaches of speed limits.
There are 35 pan, tilt and zoom cameras. These are manually operated and used by operations personnel to monitor the motorway network, identify issues and deal with incidents. These cameras are not used to detect breaches of speed limits.
There are six Highways Agency digital enforcement cameras (HADEC) which are used to detect breaches of the speed limits set on the motorway at fixed points. These cameras in most part are only used when Active Traffic Management is in operation. However, all the HADEC sites are capable of enforcing speeds of up to the national speed limit. This is done at the discretion of the West Midlands Camera Enforcement Unit.
6 Feb 2014 : Column 315W