I apologize for that. I try to mitigate my US-centricness in my comments as much as possible, understanding completely that I am speaking with a global audience, but I am definitely not perfect at it :D

I suppose the same goes if you take the tube, ride a bike, walk, etc? There's still rules in terms of behavior, flow of traffic (even foot traffic), etc, that helps set a number of expectations so everyone can decide and behave accordingly. Happy to hear different thoughts on this!