Wondering about this - it's never happened to me, but it could have done, and I've certainly witnessed the scenario where it could have happened to somebody else.
Might as well use the drawing in the HC to illustrate.
So imagine you're the driver of the green car, or of a car behind him, waiting, allowably, to turn right because it's only oncoming traffic (i.e. the two silver MPVs) stopping you - the road you're turning into is clear.
But while you are waiting, cars in the opposite direction are turning left into that road, something causes the traffic to back up until it gets to the point where the road is full of stationary cars backed up to the junction.
Vehicles coming towards you, intending to turn left, stop, as they may not enter the box, or the lights go red.
At that point it is not oncoming traffic preventing you from exiting the box, it's that your exit road is not clear. But it was when you entered the box.
Do all enforcement cameras record video, or would you end up with only stills showing you blocking the BJ?
If video is recorded, can one rely on councils/TFL fairly considering all of it, or might they be "selective" in order to pursue a penalty charge?
As I said, this is hypothetical, but I have been "green car man" at a junction where I've at other times been travelling the opposite way and turning left, stopped because the road I wanted to turn left into has become blocked, and seen some poor "green car man" left high and dry and wondered if he would get done for blocking the box.
