Interesting question.
In Churchur the traffic engineers are reluctant to deploy green turn arrows. This has resulted in people using the yellow light as a turn phase. Our worst intersections are the multi lane ones, big wide avenues. hen someone is turning, they have to cross several lanes of opposing direction before they exit the intersection.
At the same time as someone is using the yellow phase to turn (and not have to (gasp

.....wait) there is occasionally someone coming in the other direction who is also looking at the yellow light, deciding whether to stop or nail it to beat the change to red.
Occasionally the person turning doesn't see the other car, and occasionally the person coming straight through from the other direction is nailing it. Too many times, these two crash.
The turning person may even have seen the oncoming car, and decided that the oncoming driver has plenty of time to stop, so will.
There are so many permutations for the yellow light crash, when it's very preventable.
If someone crosses the lines to enter the intersection and they just are just across the line when the light turns red, they haven't committed a red light offence. In Churchur the yellow lights are 4 seconds in duration, so if a car/bike enters as the light turned red, they ere 4 seconds back when it went yellow. At 50 km/h that's over 50 metres. Plenty of time to have stopped.
So may times we get the arguments about how the light had just gone yellow, when in fact it had turned red just as they entered. We hear all about the having to keep going because someone was so close behind, even where there is nothing behind. Basically, for every yellow light ticket there is an excuse.
The classic is a person waiting to turn right at a set of lights. They are stationary behind the limit line. They are waiting at a green light, waiting for the traffic coming the other way to clear. The light goes yellow, the traffic coming the other way (miraculously) slows because their light has gone yellow too, and the stationary vehicle sets off, using the yellow light as a turn phase. No problemo, until a driver coming the other way is nailing it to also beat the lights.
The general thought is that it's totally okay to go through a yellow light. Thing is, there is a condition on that.
(4) While a steady yellow signal in the form of a disc is displayed,—
(a) a driver facing the signal must not enter the controlled area while the signal is displayed unless the driver's vehicle is, when the signal first appears, so close to the controlled area that it cannot safely be stopped before entering the area:
The discussion normally comes down to one of whether the stop can be made safely. The driver is making a retrospective judgement, where they drive through, we confront them, then they come up with a reason why they couldn't stop, which normally bears no relevance to what actually happened.
I smile (always inside, of course) when someone in say, an R8 Commodore or a new Merc or Audi (all fitted with awesome brakes, enters an intersection a split second before the light goes red. We stop them, and they argue that they couldn't stop in time. LEARN TO DRIVE YA NUMPTY. Always only ever said quietly and to ourselves, of course.
Happy to debate traffic light things, it's like, Traffic Lights R Us. My section is called the Intersection Safety Team, I have learned a thing or two about the subject since we were set up.
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