ABSTRACT
Traffic demand is to point to in a certain period of time the total amount of OD flow within an urban area, it contains various purposes of people and objects in the social public space in a variety of ways mobile demands of passenger flow and cargo flow. Sometimes in order to convenient to deal with problems, and according to the needs of passenger OD flow can be according to certain proportion swap.[7] In order to make traffic data is more persuasive, the determination of total demand is usually to obtain data through directly to the survey, investigation methods including stratified sampling survey, field investigation and questionnaire investigation, etc.
