Beyond the Line: North Wales Traffic Cops Catch up on the ITV Hub A behind-the-scenes series looking at the North Wales Roads Policing Unit where 49 officers police almost 700 miles of road. 4 episodes available to watch Share this programme: Copied to clipboard Share on Facebook Share on Twitter Copy link to share Series 1 Latest Episode 4 We look at the dangers of high speed pursuits and the mental strains of the job. Episode 3 A look at the dangers of the job and at violent attacks on police officers. Episode 2 Looking at the challenge of young drivers. Episode 1 A new behind-the-scenes series looking at the North Wales Roads Policing Unit.