According to a recent report there are more than 58m motorcycles and mopeds in Vietnam. As a mode of transport, motorbike are more popular than cars, buses and trains; and residents transport their goods, animals, family and friends by motorcycle. Such is their ubiquity that Hanoi has voted to ban them by 2030 in an effort to reduce pollution. Photographer Stefan Rousseau took a kerbside view in Hanoi and Hội An