Road Transport System Entropy Theory Applied Research

Through discussing the character of the road traffic system, the paper introduces entropy to describe the state of the system. On the basis of the analysis of the thermodynamics entropy, the thermodynamics entropy of the road traffic system is built up, and the mechanism of the entropy producing is revealed. According to the entropy theory, The differential equation of the state of the road traffic system is derived. The paper studies the information entropy of the road traffic system further, and discusses the estimation of the possibility density function of the road traffic system. From the viewpoint of system, the paper puts forward the entropy criterion of the traffic system, and discusses in detail the way to establish the entropy criterion. At last ,the entropy weight for the valuation of the road traffic system is studied and discussed ,and the practical applying valuation of the method is proved by the example.