effects of air pollution on traffic police proposed methodology

Global review of studies on traffic police with special focus on environmental health effects

Affiliation.

• 1 School of Public Health, SRM University, Chennai, India, [email protected].
• PMID: 25034905
• DOI: 10.2478/s13382-014-0285-5

Since occupation is a major determinant of health, traffic police personnel face multiple occupational hazards. They are continuously exposed to vehicular emissions and work in a noisy and polluted environment. The objective of the present review is to explore the impact of occupational health hazards on the health of traffic police personnel. Published research papers on traffic police reporting occupational health issues were accessed and reviewed. Attempts were made to access papers that reported negative associations in order to present a balanced review. The majority of the studies have reported a decrease in the lung function and increased respiratory morbidity. The research on the cytogenetic abnormalities or genotoxic effect of vehicular emissions arising due to long-term exposure to benzene and other polyaromatic hydrocarbons has provided conflicting results, since more or less equal numbers of studies have given evidence for and against the causal association. There is a vast accumulation of epidemiological evidence on the casual association between vehicular pollution and its carcinogenic effect. Multiple studies have concluded that traffic police are highly stressed. A number of occupational factors have been attributed to stress among traffic police. Occupational health studies help us to understand the effects of vehicular pollution and its adverse influence on workers. They also provide opportunity for defined exposures measurements and precise risk assessment. The findings from these studies are easily generalizable and can help us understand the impact of air pollution on the general population.

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• Air Pollutants / analysis*
• Environmental Health*
• Environmental Monitoring / methods*
• Global Health
• Morbidity / trends
• Occupational Diseases / chemically induced
• Occupational Diseases / epidemiology*
• Risk Assessment*
• Vehicle Emissions / analysis*
• Air Pollutants
• Vehicle Emissions

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The Impacts of Urban Air Pollution on Malaysian Traffic Police: A Framework for Evaluation of Real-Time Monitoring System on Its Usability

P A S M Jamil 1 , N A D M Yusof 1 , K Karuppiah 1 , I Rasdi 1 , V How 1 , S B M Tamrin 1 , K K C Mani 2 , H S Naeni 3 , S Sambasivam 1 and D H M S Nata 4

Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science , Volume 1013 , 1st International Conference of Air Quality & Climate Change and 3rd Malaysia Air Quality Annual Symposium 17/11/2021 - 18/11/2021 Online Citation P A S M Jamil et al 2022 IOP Conf. Ser.: Earth Environ. Sci. 1013 012003 DOI 10.1088/1755-1315/1013/1/012003

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1 Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

2 Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

3 Department of Industrial Engineering Design, School of Architecture and Environmental Design, Iran University of Science and Technology, Tehran, Iran

4 Faculty of Industrial Science and Technology, Universiti Malaysia Pahang, 26300 Kuantan, Pahang, Malaysia

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The respiratory health of Malaysian Traffic Police has been compromised by working in heavy traffic and congested junctions with bad air for long hours. A wireless outdoor individual exposure device is vital to track their exposure, however, the efficacy of the system remains uncertain. While existing techniques exist to examine the efficacy of such system, there is a lack of methodology for engaging multiple assessment methods to evaluate the degree of user experience. This paper aims to propose a methodological framework tool for a quantitative evaluation of the wireless outdoor individual exposure indicator system prototype. A systematic search was conducted in major electronic databases (MEDLINE, Web of Science, Google), grey literature sources and all relevant data in the field. A three-stage framework consisting of simulation real-time monitoring, in-field testing, and usability testing is assembled. The three-stage framework proposed serves as a generic approach for evaluating the prototype with the purpose of tracking individual outdoor exposure. The method is capable of describing the complete evaluation process, from the accuracy and performance of the sensor to the extent of the end-user experience. Using the three-stage approach, future researchers may be able to create a monitoring system that is relevant to their needs.

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Respiratory Effects of Exposure to Traffic-Related Air Pollutants During Exercise

Giuseppe morici.

1 Biomedicine, Neuroscience and Advanced Diagnostics Department, University of Palermo, Palermo, Italy

2 Institute for Biomedical Research and Innovation, National Research Council, Palermo, Italy

Fabio Cibella

Annalisa cogo.

3 Biomedical Sport Studies Center, University of Ferrara, Ferrara, Italy

Paolo Palange

4 Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy

Maria R. Bonsignore

5 Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy

Associated Data

Traffic-related air pollution (TRAP) is increasing worldwide. Habitual physical activity is known to prevent cardiorespiratory diseases and mortality, but whether exposure to TRAP during exercise affects respiratory health is still uncertain. Exercise causes inflammatory changes in the airways, and its interaction with the effects of TRAP or ozone might be detrimental, for both athletes exercising outdoor and urban active commuters. In this Mini-Review, we summarize the literature on the effects of exposure to TRAP and/or ozone during exercise on lung function, respiratory symptoms, performance, and biomarkers. Ozone negatively affected pulmonary function after exercise, especially after combined exposure to ozone and diesel exhaust (DE). Spirometric changes after exercise during exposure to particulate matter and ultrafine particles suggest a decrease in lung function, especially in patients with chronic obstructive pulmonary disease. Ozone frequently caused respiratory symptoms during exercise. Women showed decreased exercise performance and higher symptom prevalence than men during TRAP exposure. However, performance was analyzed in few studies. To date, research has not identified reliable biomarkers of TRAP-related lung damage useful for monitoring athletes' health, except in scarce studies on airway cells obtained by induced sputum or bronchoalveolar lavage. In conclusion, despite partly counteracted by the positive effects of habitual exercise, the negative effects of TRAP exposure to pollutants during exercise are hard to assess: outdoor exercise is a complex model, for multiple and variable exposures to air pollutants and pollutant concentrations. Further studies are needed to identify pollutant and/or time thresholds for performing safe outdoor exercise in cities.

Introduction

Air pollution is a major public health problem. In the United States, the 2019 State of the Air document highlighted the progressive recent worsening of air quality, and the strong and dangerous interaction between climate change and air pollution on respiratory health ( 1 ). According to the European Environment Agency (EEA), the air quality progressively improved over the years in Europe ( 2 ), but is still far from the World Health Organization standards. Moreover, during exercising in outdoor conditions, the exposure to pollutants may be magnified by the increased ventilation even at low pollutant concentrations ( 3 ).

Air pollution increases the risk for cardiorespiratory disease ( 4 ) and has been extensively studied in the general population and in subgroups at risk, i.e., children, elderly, or patients with cardiovascular or respiratory disease. However, the effects on the respiratory system of exposure to pollutants during exercise remain insufficiently characterized. High ventilation increases exposure and deposition rate of particles into the lungs during exercise ( 5 ), suggesting that athletes might be at particularly high risk. Olympic Games have been held in highly polluted areas, i.e., Beijing or Rio de Janeiro, requiring traffic limitation and shutdown of industrial plants to limit the effects of pollutants on athletes' health and performance ( 6 , 7 ).

Habitual exercise is highly recommended to promote health ( 8 ). Accordingly, alternative transport strategies in cities have gained popularity. Active commuting, i.e., walking or biking to work or school, promotes a healthier lifestyle by increasing the amount of physical activity in the population while decreasing traffic volume ( 9 ). In some countries, like China, there is a strong tradition for outdoor exercise and few indoor facilities ( 10 ). It is recognized that increased exposure to traffic-related air pollution (TRAP), i.e., the air pollution originating from the emissions of motor vehicles and resulting from fossil fuel combustion, may exert negative effects on respiratory health ( 11 ).

We reviewed the literature on respiratory effects of TRAP and ozone exposure during exercise in normal subjects, general population including children and patients with chronic respiratory disease, and athletes. The details of the PubMed search strategy are reported in the Supplementary Material , together with the results of single studies organized according to the characteristics of the sample, exercise type, and indoor/field studies ( Supplementary Tables 1 – 4 ). The following sections summarize the effects of air pollutants on (a) lung function tests, (b) subjective symptoms, (c) performance, and (d) biomarkers.

Does Exercise in a Polluted Environment Affect Pulmonary Function Tests?

Exercise increases minute ventilation, magnifying the effects of the exposure to pollutants on the respiratory system ( 5 ). A meta-analysis on the effects of air pollution during exercise was inconclusive, since studies were few and involved a limited number of subjects, and the level of evidence was low or very low ( 12 ).

According to the majority of studies, air pollution worsened spirometric variables post-exercise, but the changes were quite small. Since bronchodilation occurs after moderate- to high-intensity exercise secondary to adrenergic receptor stimulation by circulating catecholamines ( 13 ), air pollutants appear to blunt the effects of exercise rather than causing a net decrease in lung function variables compared to baseline.

As for the effects of ozone exposure during exercise, decreased forced expiratory volume in one second (FEV 1 ) and/or forced vital capacity (FVC) and/or peak expiratory flow (PEF) and/or forced expiratory flow between 25 and 75% of FVC (FEF 25−75 ) were reported after prolonged exercise in hikers ( 14 ) and cyclists ( 15 – 17 ), whereas a short exercise and exposure duration may at least partly account for the nonsignificant results reported by a study in runners ( 18 ). Ozone exposure is highest during Summer, and an indoor study on the acute effects of ozone at 20 and 31°C in well-trained runners found no significant effect on respiratory function under either condition compared to no ozone exposure ( 19 ). Residential exposure to ozone and particulate matter (PM) may be more relevant in decreasing respiratory function in the long term compared to exposure to ozone or PM during exercise ( 20 ). Finally, children exercising outdoor in high-ozone areas showed an increased risk to develop asthma ( 21 ).

The level of exposure to ozone varied, since some studies were performed outdoors ( 14 – 16 , 18 , 20 ) while other studies used controlled exposure in the laboratory ( 17 , 19 ). One study assessed the effects of combined acute exposure to diesel exhaust (DE) and ozone (DE+ ozone), documenting further worsening of spirometry compared to the effects of either pollutant alone; moreover, exposure to DE the day before was associated with worsened spirometry post-exercise during ozone exposure ( 22 ). Therefore, chronic exposure to pollutants may modulate the effects of subsequent acute exposures.

Data on the effects of TRAP exposure during exercise are heterogeneous, possibly because of the variable mixtures of pollutants. Pre-exercise exposure to DE for 60 min was associated with a lower increase in FEV 1 post-exercise indoor compared to control conditions in cyclists ( 23 ), although DE had no effect on spirometry at rest. Field studies in subjects wearing sensors during exercise used black carbon (BC) measurements as indicative of TRAP exposure ( 24 , 25 ). In short-term studies, increasing BC concentration in inspired air was associated with blunted exercise-induced bronchodilation and decreased PEF post-exercise in physically active normal subject ( 24 ). When the period of observation was extended to 1 week in three different seasons, a significant negative interaction was shown between physical activity and BC exposure on FEV 1 /FVC and FEF 25−75 , with a threshold at BC concentration > 1 μg/m 3 ( 25 ).

Acute field studies in cyclists ( 26 – 28 ) or runners ( 29 ) reported worsened spirometry after exposure to a mixture of pollutants including PM of different sizes (PM 2.5 , PM 10 ), NO 2 , BC, or ultrafine particulate matter (UFPM). High TRAP exposure before and/or during exercise was associated with decreased lung function ( 27 ). Some studies found an inverse relationship between pollutant concentrations and lung function ( 28 , 29 ). However, other studies reported no significant changes in spirometric variables in studies in the laboratory ( 30 , 31 ) or in field studies ( 32 – 34 ). Two studies assessed the level of pollutants by sensors on the bicycle ( 32 , 33 ) leading to hypothesize that this methodology may lack sensitivity to reliably monitor respiratory exposure. The study by Kubesch et al. failed to show any significant interaction between intermittent moderate exercise and short-term exposure to pollutants ( 34 ). As for studies conducted in the laboratory, Bräuner used a complex protocol of 24-h continuous exposure to coarse PM; exercise tests were obtained after 15 min or 7.5 h of exposure. In this study, exercise intensity was moderate, and exercise tests were in the supine position ( 30 ).

One recent field study reported attenuated increase in FEV 1 and FVC after a walk along a busy street compared to a walk in the park in middle-aged healthy controls; instead, FEV 1 and FVC decreased post-exercise in COPD patients ( 35 ).

In summary, most studies indicated that acute exposure to air pollutants during exercise negatively affected respiratory function. The most recent studies have used complex designs to assess the interactions between the effects of exercise and air pollution. While exercise exerts positive effects on respiratory function variables, exposure to pollutants blunts the positive effects of exercise.

Does Exercise in a Polluted Environment Cause Respiratory Symptoms?

Ozone exposure during cycling was associated with chest tightness ( 15 , 17 ), shortness of breath, and wheezing ( 15 ). In cyclists, a high frequency of respiratory symptoms during and after commute in a highly polluted area was reported, especially by females and subjects with predisposition to respiratory diseases ( 36 ). Worse nasopharyngeal symptoms were reported during exposure to high pollutant levels during commute, and perception of pollution exposure was higher in females and the elderly ( 37 ). In studies testing the effects of DE exposure, increased fatigue not related to cycling intensity and respiratory symptoms were reported compared to the same exercise in filtered air ( 38 , 39 ). Air pollution also worsened respiratory symptoms in COPD patients during a walk in a high-traffic area compared to a walk in the park ( 35 ).

Overall, while ozone caused respiratory symptoms in healthy subjects, possibly secondary to its irritant properties, respiratory symptoms did not usually occur in healthy people exercising under high TRAP conditions and were more common in females than in males. Exposure to TRAP worsened symptoms in patients with chronic respiratory disease.

Does Exercise in a Polluted Environment Affect Performance?

A study analyzing the results of seven US marathons according to the levels of air pollutants reported worse marathon race times associated with increased PM10 levels, but the relationship was significant only in women ( 40 ). It was calculated that for every 10 μg/m 3 increase in PM10 concentration, performance decreased by 1.4%. A lower performance was recorded in soccer players during exercise in a polluted vs. non-polluted area ( 41 ), in cyclists performing maximal exercise in the laboratory ( 42 ), and in children living in areas of high air pollution ( 43 ); in the latter study, level of SO 2 exposure correlated inversely with exercise performance.

Conversely, other studies reported no effect of air pollution on performance. Acute exercise performance was similar in children from schools in areas of low and high exposure to pollutants ( 44 ). In runners during an 8-km test in the laboratory under different conditions of ozone and heat exposure, high temperature rather than ozone was associated with decreased performance ( 19 ). Performance during a 20-km ride in cyclists in the laboratory was unaffected by DE exposure ( 23 ).

In sedentary middle-aged healthy subjects training outdoor for 12 weeks in a rural or urban environment, fitness improved similarly in both groups, but the difference in UFPM exposure between the groups was small (mean UFPM concentration: 7,244 and 5,625/cm 3 in urban and rural groups, respectively) ( 45 ).

The data suggest a strong need for additional studies especially in endurance athletes, in whom even small effects of air pollution may negatively affect competitive performances.

Does Exercise in a Polluted Environment Affect Biomarkers?

Table 1 summarizes the results of several works reporting the assessment of different biomarkers of exposure, effect, or susceptibility after exercise under conditions of low and high exposure to pollutants. Most studies assessed changes in fractional exhaled NO (Fe NO ), a marker of airway inflammation in asthma. Normally, Fe NO increases after exercise ( 45 ) and is not an ideal indicator of pollutant-associated airway inflammation. Many studies reported unchanged Fe NO after exercise during pollutant exposure ( 25 , 34 , 50 ) or similarly increased Fe NO after exercise in filtered or polluted air ( 39 ); Strak et al. reported a slight increase ( 26 ), and Bos et al. showed a positive Fe NO response to UFPM exposure during training ( 48 ). Only one study, assessing separately the alveolar and bronchial Fe NO , reported decreased alveolar Fe NO after running in a highly polluted area ( 29 ). Finally, a recent long-term study using a complex methodology reported increased Fe NO in urban runners undergoing frequent training sessions ( 46 ).

Summary of the studies with measurements of biomarkers.

Other studies assessed exhaled breath condensate (EBC) biomarkers. Two studies in runners reported unchanged EBC pH after exercise in clean or polluted air ( 47 , 53 ). In runners, concentration of interleukin (IL)-1β, IL-6, or IL-2 in EBC was unchanged relative to exposure to air pollutants ( 46 ), while another study reported decreased nitrate and increased malondialdehyde (MDA) concentrations, suggesting increased oxidative stress in the airways during exercise in highly polluted areas ( 29 ). One study on nasal lavage found that IL-8 and IL-10 were unaffected by exposure to pollutants during exercise ( 47 ).

Analyses on plasma/serum or urine may provide biomarkers of pollutant-induced pulmonary damage. Integrity of the alveolar-capillary membrane, assessed as CC16 concentration in plasma or urine or 99m-Tc DTPA clearance, was unaffected after acute exercise under conditions of particle-rich air exposure ( 30 ). The effects of ozone in cyclists were variable, since post-exercise serum CC16 was increased in one study ( 16 ), and unchanged in another study ( 50 ). As inflammatory biomarkers are concerned, results were mostly not significant including measurements of cytokines ( 32 , 34 , 49 , 50 ). Blood aromatic hydrocarbon concentrations were consistently increased in runners ( 51 ) and cyclists ( 54 ) exposed to TRAP during exercise. White blood cells (WBCs) and neutrophil (PMN) counts did not change in one study ( 34 ), whereas two studies reported increased PMN counts ( 48 , 50 ) after exercise during exposure to pollutants compared to clean air.

Studies on cells recovered by bronchoalveolar lavage (BAL) or induced sputum yielded interesting results. A positive relationship between levels of PMN apoptosis in induced sputum and levels of PM 10 and ozone exposure during exercise was found in runners ( 52 ). Another study found increased PMN in BAL collected 20 h after the end of exercise during exposure to coarse PM in cyclists ( 31 ). In urban bike commuters, the area of BC in alveolar macrophages was larger than in non-bike commuters when the sputum samples were examined at optical microscopy ( 49 ). A long-term study reported that during Summer, i.e., high ozone exposure, stimulated BAL cells released less radical oxygen species (ROS) and more lactic dehydrogenase (LDH) compared to samples collected in Winter ( 55 ).

More efforts should be done to improve our knowledge and understanding about the effects of air pollutant in outdoor athletes. There is some evidence in favor of increased oxidative stress and inflammation, but data are still insufficient to draw conclusions.

Detrimental effects of ozone and DE exposure on post-exercise spirometry were more often reported than no effects. Data on respiratory symptoms during exercise and performance similarly suggested a negative effect of air pollutant exposure, with a higher susceptibility in women compared to men. Fe NO , the most frequently measured biomarker of airway inflammation, was not affected by exposure to pollutants. Other inflammatory markers measured in blood showed little change. Studies assessing cell composition and characteristics in induced sputum or BAL produced interesting results, but due to the difficulty in performing such studies, their number was low and sample sizes were small.

The effects of exposure to pollutants during exercise are hard to assess. Outdoor exercise is a complex experimental model, due to exposure to multiple air pollutants, and variable pollutant concentrations according to site, prevalent winds, weather conditions, or time of the day ( 56 ), besides proximity to road and traffic intensity ( 3 ). Studies under real-life conditions are now simpler because of the availability of wearable sensors ( 57 ). In laboratory studies, a limited range of pollutant concentrations can be used during exposure, for ethical reasons. Finally, most studies used acute exercise, whereas the effects of air pollutants on the respiratory system may require prolonged exposures, and highly complex statistical modeling, to become detectable.

Studies in competitive athletes are scarce and regard highly selected subjects ( 58 ). Moreover, data during competitions are usually collected under conditions of low pollution, i.e., running races are held during the weekend, and with traffic restriction along the race track. No study has examined the effects of air pollution in athletes with regard to competition sites like stadium or tracks.

Habitual exercise in the general population exerts positive effects on health ( 8 ). Longitudinal studies in middle-aged or elderly subjects underlined the benefits of moderate habitual exercise on mortality, especially in subjects exposed to residential low-moderate levels of NO 2 ( 59 ). In addition, NO 2 exposure was positively associated with incident hospitalization for asthma and COPD, while physical activity reduced the risk to develop asthma or COPD ( 60 ).

The pros and cons of active transport to commute to study or work, i.e., cycling and walking in healthy people ( 9 ), are being extensively studied. In a study comparing exposure to TRAPs during different commuting modes, the relatively low exposure during cycling was outweighed by the increased ventilation during exercise ( 3 ). An interesting model calculated the all-cause mortality risk for air pollution exposure during active transport, with special attention to two points ( Figure 1 ). The “tipping point” represents the amount of cycling per day associated with the highest risk reduction; the “break-even point” represents the amount of cycling per day beyond which increasing the amount of cycling is associated with increased pollution-related risk ( 61 ). While physical activity should be of short duration in heavily polluted cities, the model suggests no major harm associated with active transport, unless heavy pollution occurs, or exercise lasts several hours per day ( 61 ). Therefore, regular active commuting may cause some pulmonary damage, and the problem may be relevant for professional “riders.”

Relative risk (RR) for all-cause mortality (ACM) when physical activity (cycling) occurs during exposure to air pollution (at 50 μg/m 3 PM 2.5 ). The tipping point and break-even point indicate the lowest risk, and the lack on any protective effect of exercise, respectively. According to this model, the tipping point is at cycling for <90 min/day, while the break-even point indicates that any benefit of cycling is lost for >5 h/day cycling. Reproduced from Tainio et al. ( 61 ), used by permission under Creative Commons license.

Analysis of pro-inflammatory effects of air pollutants during exercise is complicated by the effects of exercise per se on airway inflammation, especially in endurance athletes ( 62 , 63 ). High concentrations of hydrocarbons were found in the blood of urban runners ( 51 ), while results on biomarkers in EBC have been disappointing to date. Studies on induced sputum or BAL found evidence of increased deposition of BC in macrophages of commuter cyclists than in non-cyclists ( 49 ) and increased oxidative stress or neutrophil apoptosis related to exposure to ozone or PM 10 ( 52 ).

As for sex-related susceptibility to the effects of air pollutants ( 64 ), women reported more pollutant-induced respiratory symptoms than men ( 36 , 37 ). These findings are in line with decreased FEV 1 and FVC in women, but not in men, living in high-traffic areas ( 65 ), and with higher prevalence of respiratory symptoms in women exposed to moderate traffic ( 66 ). Women reported more allergic symptoms than men when chronically exposed to air pollutants ( 67 ). Symptoms may also be secondary to sex-related differences in work of breathing during exercise ( 68 ).

Common-sense strategies can limit the impact of air pollution, especially during exercise ( 69 ). A meta-analysis on the interaction between air pollution and physical activity, based on seven studies in over 50,000 subjects, reported an inverse relationship between PM 2.5 levels and physical activity ( 70 ), reflecting a preventive behavior by the exposed population. A healthy diet and vitamin C and D supplementation could help limit air pollution-related respiratory damage ( 71 ). Finally, the possibility that healthy well-trained athletes may develop protective defense mechanisms has been not explored, although some studies highlighted differences in response to air pollutant exposure during exercise linked to specific genetic background regarding antioxidant and anti-inflammatory responses ( 16 , 54 ).

In conclusion, most studies agree on the benefits of exercise in healthy subjects even during increased exposure to air pollution. Since a large fraction of the world population lives in cities, protection of respiratory health is mandatory, and a safe environment for physical activity is highly desirable. For these reasons, further research is needed for overcoming the present variability in results, for clearly defining the effect of urban pollution on regular active commuting, and for developing laboratory settings able to focus on cellular models and thus to investigate more clear cause–effect relationships. Finally, the development of “personal” monitors able to reliably measure exposure at the individual level will make possible longitudinal “real life” studies.

Author Contributions

GM, FC, and MB conceived the manuscript, did the searches, and wrote the draft of the manuscript. AC and PP critically revised the manuscript and contributed to the discussion. All authors contributed to the article and approved the submitted version.

Conflict of Interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Funding. This work was funded by the University of Palermo and the CNR Institute for Biomedical Research and Innovation (IRIB), Palermo, Italy.

Supplementary Material

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpubh.2020.575137/full#supplementary-material

Supplementary Text

PubMed search strategy.

Supplementary Figure 1

Summary of PubMed search strategy.

Supplementary Table 1

Meta-analyses and field studies in the general population.

Supplementary Table 2

Studies with controlled exposure to pollutants during exercise- in-laboratory studies.

Supplementary Table 3

Field studies in cyclists.

Supplementary Table 4

Field studies in runners, soccer players and hikers.

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The impact of drivers’ short-term exposure to air pollution on traffic deaths

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• Daqian Shi 1 ,
• Ziwei Liu 2 ,
• Jie Fu 2 &
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Air pollution may decrease drivers’ driving performance thus leading to traffic accidents, but this impact is almost ignored in existing literature. We investigate the short-term effect of air pollution on traffic deaths using the high-dimensional fixed effect model and instrument variable method based on the daily-city panel data in China from 2013 to 2018. The results show that drivers’ short-term exposure to air pollution significantly increases the number of traffic deaths. For every 1 ug/m 3 increase of PM2.5 concentration each day, the daily number of traffic deaths will increase by 0.64%. The impacts of air pollution on traffic deaths can last for 2 days. We also find that impact varies from different driver groups.The male, the young (age under 22), the elderly (age over 60), and the two-wheeler drivers are more vulnerable. Worse air pollution may associate with more bad driving behaviors and less good manners. In this article, we reveal a new factor that leads to traffic deaths, i.e., air pollution, and we also put forward some prevention strategies which may provide policy references for traffic safety.

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Data availability.

The datasets used during the current study are available from the corresponding author on reasonable request.

We will discuss about the validity of thermal inversion as an instrumental variable in the following variables and data part.

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AQI is used to measure the concentration of main pollutants, and the most important pollutants in China from 2013 to 2018 are PM2.5 or PM10, so AQI mainly reflects the concentration of particulate pollutants.

Arceo E, Hanna R, Oliva P (2016) Does the effect of pollution on infant mortality differ between developing and developed countries? Evidence from Mexico City. Econ J 126

Bakian AV, Huber RS, Coon H, Gray D, Wilson P, McMahon WM, Renshaw PF (2015) Acute air pollution exposure and risk of suicide completion. Am J Epidemiol. 181(5).

Chen S, Chen T (2014) Air pollution and public health: evidence from sulfur dioxide emission of coal-fired power stations in China. 49:158–69+83.

Claeson AS, Liden E, Nordin M, Nordin S (2013) The role of perceived pollution and health risk perception in annoyance and health symptoms: a population-based study of odorous air pollution. International Archives of Occupational and Environmental Health 86(3).

Correia S, Guimaraes P, Zylkin T (2020) Fast Poisson estimation with high-dimensional fixed effects. Stata J 20(1).

Cortez-Lugo M, Moreno-Macias H, Holguin-Molina F, Chow JC, Watson JG, Gutiérrez-Avedoy V, Mandujano F, Hernández-Ávila M, Romieu I (2008) Relationship between indoor, outdoor, and personal fine particle concentrations for individuals with COPD and predictors of indoor-outdoor ratio in Mexico city. J Exposure Sci Environ Epidemiol 18(1).

Dales RE, Cakmak S, Vidal CB (2009) Air pollution and hospitalization for headache in Chile. Am J Epidemiol 170(8).

Doiron D, de Hoogh K, Probst-Hensch N, Mbatchou S, Eeftens M, Cai Y, Schindler C, Fortier I, Hodgson S, Gaye A, Stolk R, Hansell A (2017) Residential air pollution and associations with wheeze and shortness of breath in adults: a combined analysis of cross-sectional data from two large European Cohorts. Environ Health Perspect 125:097025

Article   Google Scholar  

Faria MV, Baptista PC, Farias TL, Pereira JMS (2020) Assessing the impacts of driving environment on driving behavior patterns. Transportation. 47(3).

Fu Z, Zhao H, Chen J, Yu M (2019) Influence model of social network traffic information on the travel mode choice behavior. J Transp Syst Eng Inf Technol 19:22–29

Google Scholar  

Fu SH, Gu YZ (2017) Highway toll and air pollution: evidence from Chinese cities. Journal of Environmental Economics and Management. 83

Gu H, Yan W, Elahi E, Cao Y (2020) Air pollution risks human mental health: an implication of two-stages least squares estimation of interaction effects. Environ Sci Pollut Res 27(2).

Guarnieri M, Balmes JR (2014) Outdoor air pollution and asthma. The Lancet 383:1581–1592

Article   CAS   Google Scholar  

Hu B, Wei L, Dai J, Lu J, Zhang D, Feng X (2019) Meta-analysis on the influence of short-term exposure of carbon monoxide on mortality in China. Modern Preventive Medicine 46:2144–8+62.

Huang S (2013) Research on safety and early warning technology of highway traffic in fog. Chang’an University.

Jacobs M, Hart EP, Miranda YM, Groeneveld GJ, van Gerven JMA, Roos RAC (2018) Altered driving performance of symptomatic Huntington’s disease gene carriers in simulated road conditions. Traffic Inj Prev 19(7):708–714

Jazani RK, Saremi M, Rezapour T, Kavousi A, Shirzad H (2015) Influence of traffic-related noise and air pollution on self-reported fatigue. International Journal of Occupational Safety and Ergonomics. 21(2).

Jerrett M, Burnett R, Pope C, Ito K, Thurston G, Krewski D, Shi Y, Calle E, Thun M (2009) long-term ozone exposure and mortality. N Engl J Med 360:1085–1095

Ji M, Yang S, Zhao X, Bao X, You X (2011) The role of risk perception and hazardous attitudes in the effects of risk tolerance on safety operation behaviors among airline pilots. Acta Psychol Sin 43:1308–1319

Jia Y, Zhang L, Duan Y (2016) Associations of anger while driving and driving style with aggressive behaviors in drivers. Chin J Public Health 32:1373–1377

Kaplan S, Guvensan MA, Yavuz AG, Karalurt Y (2015) Driver behavior analysis for safe driving: a survey. IEEE Transactions on Intelligent Transportation Systems. 16(6).

Lee B-J, Kim B, Lee K (2014) Air pollution exposure and cardiovascular disease. Toxicological Research 30:71–75

Li L, Yan M, Wang T, Wang W, Gu Y (2019) Influence of fatigue driving on unsafe driving behaviors of drivers based on TPB. J Xi’an Univ Sci Technol 39(06):979–984

Li X, Chen H, Li Y (2020) The effect of air pollution on migration: evidence from China. Environmental Science and Pollution Research. 27(11).

Liu N, Zhou H, Cao Y, Tang C (2017) A study on influencing factors of driver’s steering behavior in vehicle and two-wheelers accidents. Sci Technol Eng 17:344–348

Long K, He L, Gong X (2011) Effects of countdown timer on driver behavior after the onset of yellow light. J Saf Environ. 11(02).

Lyu N, Cao Y, Wu C, Xu J, Xie L (2018) The effect of gender, occupation and experience on behavior while driving on a freeway deceleration lane based on field operational test data. Accident analysis and prevention. 121

Oglesby L, Kunzli N, Monn C, Schindler C, Ackermann-Liebrich U, Leuenberger P (2000) Validity of annoyance scores for estimation of long term air pollution exposure in epidemiologic studies - The Swiss Study on Air Pollution and Lung Diseases in Adults. American Journal of Epidemiol. 152.

Pantangi SS, Fountas G, Anastasopoulos PCh, Pierowicz J, Majka K, Blatt A (2020) Do High Visibility Enforcement programs affect aggressive driving behavior? An empirical analysis using Naturalistic Driving Study data. Accident analysis and prevention. 138.

Shi D, Yu H (2020) Reevaluating the subjective welfare loss of air pollution. Journal of Cleaner Production 257.

Sun L, Chang R (2014) A study on driving styles of commercial driver. Chin J Ergon 20(03).

Szyszkowicz M (2009) Air pollution and ED visits for chest pain. American Journal of Emergency Medicine 27(2).

Wang J, Wang Q, Gao F (2019) The relationship between air quality and residents’ happiness——a study from the perspective of suicide rate. Review of Investment Studies 38:89–100

Wang H, Zhu Y, Peng L, Su H (2018) A review of emotional induction and recognition of drivers. J Transport Inf Saf 36:1–6+50.

Wang N (2018) Analysis of haze influencing traffic safety. People’s Transportation. 64–5.

Wu S, Chen X, Gao Y, Chen W (2019) Study on driving behavior characteristics in foggy environment. J Qingdao Univ Technol 40:101–105

Xing Y, Xu Y, Shi M, Lian Y (2016) The impact of PM2.5 on the human respiratory system. Journal of Thoracic Disease 8(1).

Yan X, Zhang H, Wu C, Mao Z, Lei H (2013) Research Progress and prospect of road traffic driving behavior. Journal of Transport Information and Safety 31:45–51

Yu H, Liao et al (2021) Environmental regulation and corporate tax avoidance: A quasi-natural experiments study based on China’s new environmental protection law[J]. J Environ Manag 296

Zhang L, Liu T, Pan F, Guo T, Liu R (2014) Analysis of effects of driver factors on road traffic accident indexes. China Safety Science Journal 24:79–84

Zheng S, Zhang X, Sun W, Wang J (2019) The effect of a new subway line on local air quality: a case study in Changsha. Transportation Research Part D 68

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This paper is financially supported by the National Natural Science Foundation of China (Grant No. 72004170), National Outstanding Youth Science Fund Project of China (Grant No. 71725007), Chinese National Funding of Social Science (Grant No. 19ZDA083), and the Fundamental Research Funds for the Central Universities(Grant No. 2020SK040).

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School of Economics, Wuhan University of Technology, Wuhan, 430070, People’s Republic of China

Institute of Quality Development Strategy, Wuhan University, Wuhan, 430072, People’s Republic of China

Ziwei Liu, Jie Fu & Hongwei Yu

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All authors contributed to the study conception and design. Data collection and analysis were performed by Daqian Shi, Jie Fu and Hongwei Yu. The first draft of the manuscript was written by Ziwei Liu and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Shi, D., Liu, Z., Fu, J. et al. The impact of drivers’ short-term exposure to air pollution on traffic deaths. Environ Sci Pollut Res 29 , 61323–61333 (2022). https://doi.org/10.1007/s11356-022-20230-0

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Received : 20 December 2021

Accepted : 09 April 2022

Published : 20 April 2022

Issue Date : August 2022

DOI : https://doi.org/10.1007/s11356-022-20230-0

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