I remember a British program that tried to recreate this with British children.
Different groups were set the task of getting from a park to the London eye. There was all sorts of hoops the program makers had to jump through, not least the bus drivers would report unaccompanied children, under eight, to the police. I remember a little boy with his younger twin sisters, it didn’t look like they had any chance of going anywhere! But they managed.
It was a revelation what is expected of some children and how much they are actually capable of.
I sometimes wonder if our society has it right with all primary having to be collected by an adult, even p6 and p7.