In order to explore the contribution of different vehicle emissions to road air pollution, taking Shenzhen as an example, the local emission factors of Shenzhen were calculated by using the handbook on emission factors for road transport(HBEFA). Combined with the measured traffic flow data of one typical road in Shenzhen, the hourly average emission factors and emission intensity of CO and NOx, as well as the contribution rate of different motor vehicles to the road section were calculated, and the road traffic pollution emission was simulated and verified by California line sources dispersion model (CALINE 4). The results show that: the hourly emission factors of CO and NOx are (1.04±0.71)g/km and (2.95±2.41)g/km respectively, and the emission intensity are (2664.27±1626.20)g/(km?h) and (7017.85±3382.99)g/(km?h) respectively; the emission intensity of NOx changes significantly day and night; large trucks account for 41% of the total traffic flow, and the emission factors of CO and NOx are 3～9 times and 17～24 times of those of small buses, and the contribution rates of CO and NOx of large trucks are 77.3% and 92.9% respectively. When the CO and NOx emission standards of large trucks are increased by 10% or the number of large trucks is reduced by 10%, the CO and NOx emissions of the road will be reduced by 7.7% and 9.3% respectively. Therefore, it could be an effective way to reduce road traffic pollution by improving the emission standard of large trucks or reducing the proportion of large trucks.
朱永璇，何 流，郭唐仪
. Emission Characteristics of Typical Road Sections Based on
Traffic Flow-HBEFA Emission Factor: A Case Study of Shenzhen[J]. Transport Research, 2021
, 7(4)
: 67
-74
.
DOI: 10.16503/j.cnki.2095-9931.2021.04.009
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