Study On The Development Level Of Urban Road In China

Road is the basement of the traffic system in urban. With a conclusion on the history of urban road planning and building, this paper analyzes the development level of urban road in China. With qualitative and quantitative studying on the development level of urban road network includes three main factors (developed scale, grade structure and road network layout), this paper brings forward the fuzzy judgment appraise model in the purpose of instructing urban traffic planning.Based on the relationship between developed scale of urban road and some social variables, we draw a Cobo-Douglas production function which involves the devotion element of urban road by econometrics method, and by which we can mensurate the elastic coefficient between urban road scale and GDP. In this paper, we use the method of System Dynamics in order to conclude the model about forecast road developing scale in the future. Then, we put forward the criterion of judging the rationality of urban road's grade structure after expounding the classification in China and other countries. Furthermore, we study some problem about road network layout. At last, we give out the fuzzy judgment appraise model on the development level of urban road.