Taxi-hailing Choice And Emssion Reduction Analysis Based On Floating Car Data

Taxi,an important part of the urban traffic system,is a significant tool for studying public transport and citizens’ traveling activity in Shanghai.Taxi emission reduction also has important significance for the mitigation of traffic exhaust emissions in Shanghai.Taking Shanghai as a case study,this paper analyzes the spatial and temporal characteristics of citizens by combining the GPS data of Qiangsheng taxis,the data of swiping cards of the Metro and the GPS data of Mobike.On this basis,Binomial Logit models are established for peak and non-peak travel periods respectively by selecting three kinds of independent variables: socio-economic and demographic variables,urban morphology and land use variables,and travel-related variables.The rules of travelers’ choice between Metro and taxi,Mobike and taxi are analyzed,and their influencing factors and degree are discussed.It provides a reference for the management department to improve the sharing rate of public transport modes and alleviate the urban traffic congestion.The results show that the percentage of residential land,official land and the number of educational institutes have a significant impact on the choice of travel mode in peak hours,while the percentage of commercial land,number of hospitals and bus lines during non-peak period are more significant.In addition,in order to further analyze the emission and emission reduction benefits of automobiles in Shanghai quantitatively,the measurement of Vehicle Specific Power(VSP)is introduced.According to the measured PEMS experiments,a localized calculation model of automobile exhaust based on VSP is established,and the daily exhaust emission of Qiangsheng taxis in Shanghai is calculated.On this basis,according to the cost-benefit analysis method,the economic feasibility of five taxi emission reduction countermeasures is analyzed.This paper analyses the choice of different travel modes,and introduces a non-aggregate model to analyze the potential influencing factors,and establishes a local emission model based on the measured data of PEMS.It calculates and analyses the characteristics of taxi emission and the potential of emission reduction,which has practical significance in improving road traffic efficiency,energy saving and emission reduction in Shanghai.