Study on Gasoline Vehicle Emission Inventory Considering Regional Differences in China

Table 6

Gasoline vehicle average speed correction factor.

Vehicle emission	Velocity Range (km h^−1)
	<20	20–30	30–40	40–80	>80
CO	1.69	1.26	0.79	0.39	0.62
HC	1.68	1.25	0.78	0.32	0.59
NOx	1.38	1.13	0.90	0.86	0.96
PM2.5/PM10	1.68	1.25	0.78	0.32	0.59

Data from Chinese Research Academy of Environmental Sciences—Technical Guidelines for Preparation of Air Pollutants Emission Inventory of Road Vehicles [15].