Graham Firth Communications Ltd can supply self contained portable Matrix signs for informing the travelling public of any problems though the road works, all the signs comply to the Highways agency TR2516B and are programmable locally or remotely, also we can supply variable speed signs that can be used ether for informing the public or the site staff that they are speeding. All of the signs can be powered off the mains or can be self contained with Batteries and solar panels to keep the batteries fully charged.