Average speed cameras are being switched on this week at a “collision hotspot” on the A55 at Denbighshire. A study in March found 55% of vehicles, 217,642 out of 394,326, driving westbound at Rhuallt Hill exceeded the 70mph limit. Cameras have been installed at junctions 28, 29 and 30 as part of a trial. “We’re working towards no speed-related incidents, not more speeding...