As you cross the street, notice which car's driver feels most likely to do something stupid or dangerous. Walk a little slower, turn your head, and make direct eye contact. Brains cannot help but notice faces, plus eye contact startles anyone into suddenly remembering they live amongst other actual people.
@merlinwisdom along those lines. I work in live production. When I walk out a secured door that I technically may not be allowed to re-enter into later. On my way out, I make eye contact with security, smile and say hello. I’m usually allowed back in, even if it’s against the rules.