Vehicle EmissionsAir PollutionAir PollutantsNitrogen DioxideSulfur DioxideParticulate MatterEnvironmental MonitoringAir Pollution, IndoorOzoneEpidemiological MonitoringEnvironmental ExposureRespiratory Tract DiseasesWater PollutionCitiesEnvironmental PollutionParticle SizeWeatherUrban HealthSmokeCarbon MonoxideAirNitrogen OxidesRespiration DisordersSeasonsMortalityMotor VehiclesOxidants, PhotochemicalInhalation ExposureAccidents, TrafficAsthma