I've heard of people getting fined off redlight cameras when they've gone through a bit to let emergency services through.
What happened to us was we were driving home one day, 8 years or so ago now. I had a 2.5 v6 vectra at the time, it was a fairly quick car. (It's the same one that got totalled later, pics in my gallery)
We came up behind an old Fiesta with four lads in. It kepyt going and then slamming on, as if it was trying to make me hit it. At a bit of clear road I got past it, with it trying to hit me as I went past.
When we got to the next junction it didn't brake, it used me as a brake, smashing into the back of us.
On straights I could get away, but as soon as either traffic or junctions appeared they would slam into us. This went on for a good 5 minutes. Luckily my car was much heavier and stronger.
We called the police. The 999 dispatcher's advice was to stop and see what happened. Which I simply wasnt going to do. (He later got sacked after my mother-in-law lodged a complaint.) We'd been able to get the reg number of the vehicle at least.
So knowing I wouldnt get any help from the police and would need to sort this myself I finally reached a dual carriageway and shot off to my brother-in-laws farm, got my wife and daughter safe and went with him and one of the farmhands, got ourselves some large crowbars and waited at the top of the farm drive.
Fortunately or unfortunately, we'd managed to lose them.
I reported it to the police and that was that I thought until a week later I got a call.
The police had found the car in the early hours of the next morning in the town centre, the driver slumped at the wheel, out of his head on drugs. He attacked the 2 coppers when they talked to him and got arrested and sent down. He was a career druggie and serial violent offender, him and his family well known to the police. The police think on that day he was looking for someone to hurt.