I'd suggest they'll side with the car who braked - the fact the lorry driver veered toward the centre of the road as the second car turned off indicates he was driving far too close and fast, and them combined with the flash has probably startled the driver of the car who braked, even if the ultimate aim was a brake check.
The lorry driver should have backed off a lot earlier, plus the conditions were terrible as well.
I've also found as well that dashcam videos distort the perspective due to the wide angle of the lens, so the reality is that the lorry driver was probably a lot closer to the car in front than is apparent on the video.
The lorry driver should have backed off a lot earlier, plus the conditions were terrible as well.
I've also found as well that dashcam videos distort the perspective due to the wide angle of the lens, so the reality is that the lorry driver was probably a lot closer to the car in front than is apparent on the video.