Studies On The Planning Method Of Bus Rapid Transit Network

With the rapid increasing of the car volume, presently the traffic situation in China's urban roads continues to deteriorate. On the one hand, we must convert our ideas to raising the sharing rate of the bus traveling instead of relying on the ineffectively traditional solution method simply by improving the supply of road facilities. On the other hand, urban public transport sharing rate showed a downward trend year by year because of lacking competitiveness. BRT, as a new urban public transport means, is highly concerned for its playing a big role in alleviating urban traffic congestion and optimizing its structure and so on.First comes to the analysis of conditions of the implementation of Bus Rapid Transit .The conditions of implementation include passenger flow and road,then analyze the relationship of the road conditions and passenger flow conditions.City traffic corridor directly determines the network layout of BRT network, so during the planning Of the BRT network .you must first identify the BRT traffic corridor. In the study of the discrimination of BRT corridor,this paper proposed the method based on mathematical morphology of discrimination of the city traffic corridor. The combine the city traffic corridor which have been identifyid and control points of the corridor into a comprehensive transportation network, through the traffic assignment methods to identify the line, finally identify the BRT corridor.On the respect of BRT traffic demand forecast, according the inadequacy of China's urban traffic data accumulation as well as the current stage characteristics of China's urban development,base on the BRT system guide the urban land development, in traffic generation fore cast, start with the root of traffic generation ,adopte the method of basing on the nature of land-use to forecast the BRT traffic demand.On the identified BRT traffic corridor, it require to combinate the prediction passenger flow of the corridor to study how to concrete implement the line arrangement of the BRT network. First of all, study how to choose the main trunk and the nodes on the BRT traffic corridor to generate the initial BRT network. Then study the method of BRT network optimization,it puts forward the optimal model with the goal of the maximal density of direct passenger transport and the minimal flow coefficient, reflecting features of priority to efficiency of the BRT as a mass transit mode. Algorithms are improved on the basis of the practical methods through one by one. The model, clear in thought and easy in operation, has a good practical value for the rapid development of BRT in our city.Finally in order to verify the feasibility of the proposed method in this paper, carry out an empirical study of BRT planning of Shenzhen.