If You Could Live In Another Decade,...
ChatterBank6 mins ago
No best answer has yet been selected by dive75. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.The only thing I have to add to Skids' answer is about camera vans. They usually 'get you' coming towards them, but can get you going away. Most people accelerate after passing the van. To combat this, they can swivel the whole camera rig 180 degrees and get you going away through their windscreen. They will also 'do' you for any other visible offence eg insecure load, using a phone, reading a map etc.