My husband and I traveled through Vietnam for our honeymoon 10 years ago. One of the hardest parts of our trip was crossing the street in Hanoi, Vietnam’s capital city. Motorcycles and rickshaws and cabs and scooters bustled to and fro in multiple lanes. Yet there were no lane markers and no traffic lights and no cross walks. It was pure chaos to my Western eyes. When it was time to cross the street, we’d …