Soon as he'd cleared the lights his blue lights turned off. Not happy.
It's perfectly acceptable for them to turn their lights off whn there's no-one about to require activity from. Apart from your having to dodge into cones (hard to know if it was a scary dash caused by silent approach of copper, or playing chicken), what's the problem with the lights going off? Would it make you feel better if they left them on?
What is it with the suspicion of the cops? Guilty until proven innocent?
Well, I had always been led to believe that driving under blue lights meant that the emergency vehicle had to approach lights & junctions etc as though it was a give way – that the driver does not have automatic right of way, and that the training produces a state of mind that they should "assume" they have not been seen or heard by other road users.
So in the case I describe above, the driver in question bullied his way through in an unsafe manner (I had to take avoiding action), did not treat the lights as a give way, and if he was in a rush to get somewhere why did he not continue with the lights – the area I'd come from being substantially busier than the area I was travelling to.