关键词: 高速公路, 恶劣气象条件, 匝道控制, 神经网络

Abstract: The traffic flow control under various bad weather conditions is the current important problem to resolve urgently. To this problem, we use the Markos Papageorgiou’s expressway traffic flow model to analyze the various weather conditions, use the nerve network method, and build up a set of suitable traffic flow model for various weathers and a control system of the entrance ramp. Next, we use the BP nerve networks calculate methods to carry on emulation, and to distinguish parameter. Conclusion is get in the end: The mathematic model and the traffic flow model witch have been built by use of the nerve network methods tally with what the actual traffic condition of the expressway under the various bad weather condition, and establish the theory and practice foundation of the traffic flow control of the expressway under the various bad weather condition.

Key words: expressway, various bad weather conditions, on-ramp control, neural network