Traffic is one of the woes of Vietnam's big cities these days because it brings many hazards. First, too many vehicles can lead to traffic congestion during rush hour in cities. Second, many young people ride dangerous bicycles with profane language. Finally, some people deliberately violate traffic laws, such as running red lights, carrying large items, etc., which can lead to traffic accidents. In addition, drinking alcohol can lead to tragic deaths and no longer wearing helmets. In conclusion, in my opinion, traffic in big cities is very dangerous. I hope the traffic in Vietnam will improve in the future.