| Most big cities in the world have been facing increased traffic congestion which directly prolongs the travel time in vehicles, prevents the development of economic and worsens the environmental problem, thus decreasing the quality of life. Traffic congestion simply results from the mismatch between available traffic infrastructure and the demand of using vehicles, which is supposed to be well solved by the traffic congestion pricing. Previous researches have provided effective practical experiences from successes and failures in planning and implementing traffic congestion pricing. This paper mainly introduces the implementation of the congestion charge in some famous cities like Singapore, London and Stockholm (Sweden), and sums up the successful experience of implementing road congestion pricing system, on which the project of implementing road congestion pricing in Ho Chi Minh is built.Considering the travel character of travellers, attribute of travellers and the original attribute of transportation modes, this paper sets up a logistic model to investigate the travellers’ behavior in Ho Chi Minh. Specifically, the significance levle used in this model is0.05. Through this model, it shows that the major factors affecting the behavior of traveller are travel distance, the difference of travel cost between cars and buses, the cost of congestion, the parking fee of cars, the difference of time between cars and buses, and the time for travellers to reach the bus stops on foot. Furthermore, the utility difference between travelling by cars and travelling by public transports is calculated in this model, and it indicates that by increasing the fuel fee, parking fee and congestion fee, less travellers would choose cars as their travell tool.According to the relationship between speed and traffic flow, the relationship between price and traffic demand and the classical congestion pricing models, this paper proposes a new congestion pricing model suitable for Ho Chi Minh. This process begins with using4well-known speed-density models to fit the data collected locally. The result shows that the Drake model is the best one to tell the relationship between traffic speed and traffic density in Ho Chi Minh. Then, based on the Drake model, this paper proposes a new speed-density model. Also with the information on the length of road and the time value of travellers, this paper finds out the relationship between traffic speed and the price of congestion and further gives a formula to calculate the congestion price based on this relationship. In particular, this paper also offers a method to test the performance of congestion pricing. This method can be done by counting the number of traffic in the road, so is much easier to implement compared to the one done by collecting the date on traffic speed. Finally, the paper makes analysis on the relationship between adiministrators of road and private corporations, as well as the mechanism and performance of each kind of way in investment. Based on this, this paper proposes some advice to implement the congestion pricing system in Ho Chi Minh.
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