基于SP调查的出行时间价值估计方法研究

Research on Estimation Methodology for Value of Travel Time Based on SP Survey

出行时间价值是出行成本计算的重要依据。为了得到居民在不同拥车水平和出行目的下的出行时间价值,选取时间和费用为观测变量,设计正交SP调查问卷,建立多项Logit模型。选用交通建模软件TransCAD6.0并结合GISDK二次开发工具进行参数估计。以东莞市SP问卷调查数据来验证模型。研究发现,出行时间价值模型估计与通过收入法匡算的结果一致,模型拟合度较高,且分类指标呈现为有车家庭高于无车家庭,弹性出行高于刚性出行。

Value of travel time（VOT）is an important basis for calculating the travel costs.To get the VOT of residents by car ownerships and travel purposes,time and fare are chosen as observable variables to design orthogonal SP questionnaires and a multinomial logit model.Combined with GISDK secondary development tools,TransCAD 6.0is used to do the estimation.The research also takes SP survey on the data of dongguan city to validate the model.The results show that the outcome is consistent with the one calculated by the income method and the model-fitting degree is high.Besides,the VOT of the families which own cars is higher than the families without,and the flexible VOT is higher than the rigid one.