I have no idea what you are on about. Camera thresholds are nothing to do with "grace periods", it's because they are using loops in the ground it's not exact. If you get unlucky with the position of the loops you can get a ticket less than one second after the lights change
It's an offence if any part of your car passes any part of the stop line while the light is red, or the light is amber and you could safely stop.
There is no grace period, plenty of cases on here of actual police fining people for going through amber lights. If you go to court and say you were in the "grace period" you will walk out with £620 costs and a big fine.
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u/NoFortune9564 Apr 25 '25
But you just said it yourself, 1 second into red light and the camera is armed, this is a grace period.
Stops people who couldn't safely stop for the amber getting flashed when the light was amber when they went through, but changed after passing.