A bit off the discussion, but hundreds in the North:
Here you go ranting accusations. No where did I say they were impractical. I simply said, in the UK / EU we don't usually have them. We have traffic lights or roundabouts:
Don't be so self-conscious, I wasn't referring to you. I was referring
@Rajagra's characterization of 4 way intersections as "
barmy experiments".
As for you, the notion of a lens type for the UK/EU and another for the US is simply daft. Assuming that a typical 4 way interchange is the only scenario one needs to accommodate is so overly simplistic in conceptualization it is nothing short of astonishing. The US is a vast country with literally hundreds of thousands of driving environments. As one typical example, I live in New England where much of the driving is not unlike "Old England". There are a few broad intersections like the example you provided from YouTube. There are also round-abouts of different sizes and designs, smaller 4 way cross-roads with traffic signals, stop signs, yield signs, flashing yellow light intersections, road of different widths and diesigns. We even have rural back country dirt roads where cars like this might drive past your house on any given day.
(this is what is referred to around here as a three rod road, BTW).
Anyway, in your example of a 4 way crossroads above you said,
"If the camera shows you were green and someone comes from the side and hits you, then that's enough to show you were in the right, they were in the wrong." You are ignoring that there are hundreds, perhaps thousands of other possible driving mishap scenarios one needs to be able to record that would be missed if you have too narrow a view and no hood (bonnet) in the image. Someone failing to stop for a red traffic light or stop sign at a 4 way is merely one of them.
But aside from that, time and time again it becomes apparent that your notions of what is required in a dash cam are based on speculation and theorizing rather than actual experience. Your assertion that a lens choice in a dash cam should be determined based on a single driving scenario, such as a 4 way intersection makes no sense. It is the same regarding the need to eliminate all barrel distortion or have a ruggedized housing and all the rest of it. What is clear to me is that you are essentially an armchair dash cam theorist who has never ever had to use real footage in a legal or insurance matter. Until that day comes you are just a hobbyist engaging in elitist and off target conjecture regarding what people truly require in a proper dash camera.
And where do you get the notion that Kiev, Ukraine or Manila, Philippines as in the photo examples I provided are "undeveloped countries"?