Analysis of the Low-Carbon, Environmental-Friendly, Energy-Saving, and Emission-Reduction Evaluation Model of Urban Rail Transit Based on the Spatiotemporal Distribution of Passenger Flow

Table 2

Sample of emission factor database.

Road type	Speed range	CO	CO2	THC	NOx
11	0	42.39	5631.03	9.86	46.98
11	1	24.37	3399.37	5.53	26.83
11	2	17.59	2526.35	3.94	19.39
11	3	13.61	1966.97	3.03	14.95
11	4	11.53	1698.62	2.55	12.66
11	5	9.87	1459.58	2.17	10.81
11	6	8.8	1324.12	1.93	9.67
11	7	7.87	1188.26	1.72	8.63
11	8	7.16	1089.2	1.56	7.86
11	9	6.49	992.84	1.41	7.13
11	10	6.01	930.91	1.3	6.64

Note. Road type 11 represents the roads on the left and right sides for vehicles, with six roads on each side including motor vehicle lanes and nonmotor vehicle lanes.