Ключевые слова: authority, bikes, bustle, busy, cars, chaos, city life, cityscape, communication, compact, congestion, control, coordination, crossroads, diligent, duty, enforcement, hanoi, horn sounds, hustle, intersection, law enforcement, local life, motorcycles, observation, order, pedestrians, police hat, public safety, quaint, road, roads, roadside, safety, small, street, structure, swirling, tourism, traffic, traffic flow, traffic lights, traffic regulation, transportation, travel, uniformed officers, urban, vehicles, vietnam, watch,