Goodness.....that's bonkers....it's like Cornwall during the summer holidays !!! Although much like your pic....the tourists don't know where they are going......but the locals do!
That was one of the things I enjoyed in Hanoi, watching the traffic at an intersection from a balcony up high. The things you'd see. Best advice I was given for crossing the road was - commit, make eye contact and don't waver. Still hairy though ha ha.