Abstract
The vehicles driving causes resuspension of road dust, which deteriorates air quality and poses population health risks. Based on sliding grid technology, the distribution characteristics of resuspended PM2.5 generated from a single vehicle driving are studied, and its population exposure for drivers and pedestrians are analyzed. The results show that the concentration of PM2.5 at z = −0.03 m has a “double bracket” shape with one front and one back. The length of PM2.5 concentration distribution gradually increases from 6.825 m to 60.825 m for 1 to 10 s. The maximum height of resuspension PM2.5 increases from 3.16 m to 5.13 m from 1 to 3 s and shows a sawtooth pattern from 3 to 10 s, reaching its highest at 5.62 m at 9 s at the XZ section. The dust gradually rises from 1 to 4 s and the dust gradually spreads to both sides of the vehicle from 4 to 10 s at X = -15 m section. PM2.5 concentration for a, b, and c ranges at 0–59.0, 0–63.1and 0–39.2 μg/m3, respectively. The driver in point a poses the highest exposure concentration within 1–10 s, which is 2.1 times that of pedestrian b and 4.1 times that of pedestrian c.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
