Why would you think a 20 mph collision with a bike is likely to be fatal? Even a car ped collision at 20 mph is quite survivable; that's why mostly evidence gov

Why would you think a 20 mph collision with a bike is likely to be fatal? Even a car ped collision at 20 mph is quite survivable; that's why mostly evidence governed countries like Sweden have 20 mph limits, as you get faster you may save time linearly (doubtful in a city, your average is way down there) but chance of survival diminishes by the square. That said, it happens, but only on the order of 1 or 2 deaths, and in some years none at all. The incidence is extremely low so no meaningful statistics. And then of course it mostly involves an old population who are susceptible to dieing from even a simple fall after stumbling on a tree root. It tells us more about the elderly than risk of cycle collisions.