1S.Shaheen.Car Sharing in Europeand North America:Pase Present and Future[J]. Transportation Quarterly, 1998(3). 35-52.
2PJchard Katzev. Car Sharing:A New Approach to Urban Trans- portation Problems[J].Anatyses of Social Issues and Public Policy, 2005(1):65-86.
3Matthew B&rth,Susan A. Sh&heen. Sh&red--Use Vehicle Systems: Fr&mework for ClassifyingCarsharing, Station Cars, and Combined Approaches[J]. Transpor- tation Pesearch Pecord. Journal of the Transportation P~esearch Board,2002,7 791 : 105-112.
4Li J, Embry P, Mattingly S P, et al. Who chooses to carpool and why? Examination of Texas carpoolers [ J ].Transportation Research Record, 2007 ( 202 ): 110-117.
5Jacobson S H, King D M. Measuring the potential tbr automobile fuel savings in the US: The impact of obesity [ J ]. Transportation Research Part D, 2009 (14) :6-13.
7Sheldon H Jacobson, Douglas M King. Fuel saving and ridesharing in the US: Motivations, limitations, and opportunities [ J]. Transportation Research Part D, 2009,14( 1 ) : 14-21.
8US Census Bureau. Annual Estimates of the Population by Five-Year Age Groups and Sex for the United States : April 1, 2000 to July 1,2006. NCEST2006-01 [ EB ]. < http ://www. census, gov/popest/uational/ asrh/NC-EST2006/NC-EST2006-01, xls > (2007-10- 14).
