Study On The Evaluated Indices System Of The Traffic Demand Management

Along with the economic development and the policy to encourage car enter the family, the quantity of the car owners is quickly increasing, the transportation problem has been one of the important factors that restrict the city's develop. It is proved that putting the traffic demand management and the road supply ability expansion in the equal position, is the basic way to solve the problem. In China, the study on the TDM is in the beginning stage, although some strategies have been Implemented in some cities . so it is necessary to establish a set of scientific reliable indices to evaluate the TDM Impacts used for the decision-making as soon as possible.The author studies the definition , the characteristics and the purposes of the TDM etc…by combining the experience to solve the urban transportation problems and the trends of the traffic demand in China . The author puts forward the necessity and possibilities to carry out the TDM。The TDM involves strategies very widely, and the homologous evaluation indics systems are complicated, so how to class the strategies depend the establishment of the indics easily or not。In order to set the China's strategies ,The author firstly studies the strategies abroad and their impacts ,analyses the presence and trends of the demand in China ,and then estabilishes the frame of the China's strategies classification involing reducing the traffic Generation,changing the distribution, changing the mode choice ,equalizing the resource from space-time, according to the four stage of traffic flow (Generation,Distribution,Mode choice,Assignment).On the differences between the evaluations of TDM and that of general management,the thesis brings forward the eight principles to establishment ,the classification and the way named Aimed-AHP to select indices.For setting the evaluated indices systems of the four classifications, the author firstly analyses their popurses and the impacts on the urban, and then sets the evaluated indices frame. The author set the variable-indices models according to the strategies'impacts on the traffic flows.There have been many researches on the methods of the comprehensive evaluations ,but in this paper , the author maily studies the way to set the indices weight. The thesis firstly analyses the benefits and shortcomings of the Objective and subjective way , and then brings forward combination weighting methods ,researching the ways to combination the combination weighting methods inconludes two menthods , improved principal component analysis method and AHP- Entropy method. The author particularly study the latter ,puts forward the Lagrange function combination and multiplication combinated to whole menthod .