Research on Optimization Model of Logistics Transportation Truck Path considering Environmental Impact: Experimental Data from Xiqing District, Tianjin

Table 1

The factors of exhaust emission at different speeds (g/km).

Speed	Emissions	HDGV	LDDV	LDDT	HDDV
10	CO	69.01	25.88	27.45	31.30
	NOx	2.37	24.71	25.41	31.58
15	CO	53.74	18.09	20.15	24.89
	NOx	2.44	21.66	23.33	28.24
20	CO	42.67	14.74	17.61	20.14
	NOx	2.52	20.35	22.19	25.53
25	CO	34.42	13.11	14.74	16.49
	NOx	2.59	18.72	21.01	23.34
30	CO	28.71	10.20	11.67	13.91
	NOx	2.66	16.60	18.42	21.73
35	CO	24.19	8.08	9.65	11.80
	NOx	2.74	14.30	16.24	20.43
40	CO	30.16	6.11	8.40	10.20
	NOx	2.82	12.72	14.08	19.48