In Vietnam, the social development coupled with the increase in population led to the need to go back in the big cities of the people increased fast. However, the rate for transport does not expand (only 6%), the number of motorcycles and personal cars increase continuously (every year about 1 million motorcycles and several hundred thousand cars), public transportation such as bus, subway does not meet up to our needs, the traffic situation became chaotic lead to accidents, traffic jams are a consequence of course.
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