"Designed and built for Highways England, the mobile solar CCTV systems can be easily deployed to locations to provide surveillance and feed back information about traffic flows to the control room.
Action can then be taken, such as traffic officers deployed or speed limits lowered, to create smoother journeys.
One of the solar CCTV systems is in use at junction 6 of the M42, near to Birmingham Airport, where people were previously frustrated by congestion and delays. Organisations can now access the information from this camera and plan their journeys and business accordingly.
The cameras offer visibility at sites where a permanent camera is not necessary, such as during roadworks." Read more here