Red light cameras - timings?

[DJ_AS]

Hi all

Just wondering what the timing's are for the red light cameras at traffic lights.

I think I read on another thread here that they are activated 1 sec after the lights turn red. When are they deactivated?

I notice lots of drivers creeping over the stop line when the lights go from red to red+amber, and I wonder whether they would be snapped by a red light camera.

Cheers.

[GPSHead]

What I do know is that the red + amber phase lasts for 2 seconds, and the camera takes two photographs 1 second apart. That information alone tells you that the camera should deactivate at least 1 second before the end of the red + amber phase (because otherwise the second photograph wouldn't show a red light and therefore the two photographs together wouldn't prove anything). So it should deactivate 1 second after the red + amber phase starts at the latest.

I've never heard of either photograph showing both red and amber lights. If that is indeed always true, it would mean that the deactivation occurs at least 1 second before the red + amber phase.

You'd think that the scammers would activate the camera for as long as possible though, so I'd be interested to know the definitive answer.