As we know, there is a huge number of people living in big cities, while the people who leave the countryside for the city to work and study make up a large proportion of population. Many of them do not have enough knowledge about traffic rules. On the other hand, they carry the countryside’s lifestyle to take part in traffic in a big city. Therefore, they do not know how to go correctly in a complex traffic. According to a sociology research, the inhabitant’s knowledge about traffic rules is so bad, among 360 answerers were only 8% said that they know and understand all of traffic regulations, 78% said that they just know some simple regulations and 16% said that they do not know any rule of traffic.
Another important cause is people’s consciousness to execute the traffic rules. Maybe they know about traffic regulations very well but they do not respect because they think that it is not important even there is the control of policeman. For example, they know that when the red light is on they have to stop but they pass intentionally. Following the statistic of Hanoi Traffic Police Apartment, there were about 991,000 peoples broke the law with amount of penalty was 50 billions Vietnam dong in 2005. By 2006, it increases to 1 300 000 peoples and 100 billions Vietnam dong. And in 7 months of early 2007, there were approximate 700,000 cases broke the traffic regulations. The increasing infringement the rule help to raise traffic