'Average speed' cameras differ from single speed cameras by having cameras at two positions on a stretch of road. Cars are monitored at both points with the average speed between those points calculated as a result so that vehicles cannot simply slow down as they pass a camera and then accelerate back over the speed limit.
If the average speed recorded by the system is higher than the maximum allowed at this stage, the owner of the vehicle will receive a penalty.
In addition, the average speed control system will also control the presence of roadworthiness and OCTA and the payment of tolls.