Cyclists' exposure to air pollution under different traffic management strategies

The nexus of travel restriction, air pollution and COVID-19 infection: Investigation from a megacity of the southern China

“…Besides, previous study conducted by Zhu et al in the 120 cities of China indicated that air pollutants shown significant correlation with COVID-19 confirmed cases, however, the relationship of the confirmed cases with PM 10 and PM 2.5 was weak in this study. Possible reasons to explain were: first, Shenzhen was one of the best air quality cities in China, the relatively low concentrations and little fluctuation of the air pollutants in Shenzhen weakened the relationship of the variables statistically; second, there might be a “scale effect” on the research results, which mean the different scale of the study area and amount of data might result in different results; third, most of the studies focused on the relationship between air pollution and respiratory diseases indicated that the health risk was positive correlation with the exposure concentration of air pollutants and the exposure time (Krecl et al, 2020; Phosri et al, 2020), the while the infection time of COVID-19 was relatively short (news reported that a man with no mask was infected within 15 seconds while shopping in a food market, https://www.thepaper.cn/newsDetail_forward_5844448. ), thus the correlation of air pollutants and COVID-19 infection should be evaluated more accurately considering the COVID-19 infection and pathogenesis as well as the air quality conditions.…”

“…Consequently, social distancing was not only a simple polite behavior that keeping distance with people, but also multiple measures, such as traffic control and travel restriction, that controlled and prevented the contact among people and more over cut down the spread of the viruses (Prin and Bartels, 2020; Yezli and Khan, 2020). Different traffic and travel management strategies had a direct effect on air pollution (Pasquier and Andre, 2017; Krecl et al, 2020), however, to our knowledge, no study has yet comprehensively evaluated the nexus of traffic control and travel restriction, air pollution and COVID-19 infection at city scale, how travel restriction influences human living habit, and the impact on air environment as well as COVID-19 infection should be well concerned.…”

Cycling Lungs: Understanding Mobile Subjectivity as Enfleshed

“…Exposure varies greatly across space and time and with level of activity. For example, the higher breathing rate associated with cycling as opposed to walking can increase exposure (Krecl et al 2020). Rather than focusing on identity as a collective label or as essentialised differences, radical mobility justice seeks to understand how contextspecific relations of power configure matter-meaning to make breathing and moving easier and more life-enhancing for some at the expense of others.…”

Feature Engineering Algorithms for Traffic Dataset

“…A study conducted reveals that traffic volume has a significant impact on P M 10 , N O x , N O, and N O 2 concentrations [4]. [5]'s study shows that the increase of the vehicle increases the concentrations of air pollution during peak hours in the morning and evening. Traffic volume, traffic congestion, and low speed increase level of P M and N O x emissions [6].…”