Measuring the Energy and Carbon Emission Efficiency of Regional Transportation Systems in China: Chance-Constrained DEA Models

Table 5

Overall efficiency of east, central, and west China.

Area	Technology	Model 1	Model 8
			East	CRS	0.999	0.999	1.006	1.011	1.020
Central	CRS	0.986	0.986	1.002	1.008	1.019
West	CRS	0.916	0.916	0.934	0.941	0.955
East	VRS	1.000	1.000	1.043	1.057	1.082
Central	VRS	0.989	0.989	1.016	1.024	1.039
West	VRS	0.942	0.942	0.950	0.958	0.972