Hanoi old quarter with all the traffic of scooters typical to the Vietnamese congested city centers. Here, no rule seem to apply however, it seems to work pretty well overall surprisingly.
This is the historical central area of Hanoi, capital of Hanoi. Hanoi estimated population 3,398,889 (2007), is the capital and second-largest city of Vietnam. From 1010 until 1802, with a few brief interruptions, it was the political centre of an independent Vietnam. It was eclipsed by Huế during the Nguyen Dynasty as the capital of Vietnam, but Hanoi served as the capital of French Indochina from 1887 to 1954. From 1954 to 1976, it was the capital of North Vietnam.