The Clean Air Act (CAA) is the comprehensive federal law that regulates air emissions from stationary and mobile sources. Among other things, this law authorizes EPA to establish National Ambient Air Quality Standards (NAAQS) to protect public health and public welfare and to regulate emissions of hazardous air pollutants....

The purpose of this appendix is to provide the road load power calculation method that may be used, at the choice of manufacturer, when the vehicle road load has been determined according to WLTP procedures as defined in UNGTR No. 15....

The Emission Standard for Mobile-source Pollutants section on the Ministry of Ecology and Environment (MEE) website lists China’s national standards regulating pollutant emissions from various mobile sources, including light-duty and heavy-duty vehicles, motorcycles, mopeds, marine engines, and non-road mobile machinery....

This page provides links to regulations for controlling greenhouse gas (GHG) emissions, smog, soot and other air pollution from onroad vehicles....

The Euro emission standards were introduced to reduce air pollution from road transport and to prevent fragmentation of the EU Single Market. Since 1992, successive standards have progressively tightened pollutant limits for cars, vans, lorries, and buses while modernizing testing procedures. The current Euro 6 (light-duty) and Euro VI (heavy-duty) standards set stricter limits for key pollutants ...

Diesel road transport is a major source of black carbon (BC) and fine particulate matter (PM2.5), with heavy-duty diesel vehicles contributing the largest share. While some countries have adopted low-sulfur fuels and soot-free vehicle standards requiring diesel particulate filters (DPFs), significant gaps remain in fuel quality and regulatory coverage worldwide. The CCAC strategy calls for univers...

This document presents the proposed Regional Action Plan on Air Quality for the period 2026–2029. This new Plan aims to consolidate and expand on the achievements of the previous period, address emerging priorities, and, most importantly, strengthen the mobilization of resources and establish structured and sustainable financing for regionaland national action. It recognizes that without adequate ...

This report presents a study led by Tanya L. Alderete, a recipient of HEI’s 2019 Walter A. Rosenblith New Investigator Award, at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland. Alderete and colleagues examined whether prenatal or postnatal exposures to air pollution were associated with changes in the infant gut microbiome and fecal metabolome during the first 2 years of li...

This report presents a study led by co-principal investigators Payam Dadvand and Jordi Sunyer at the Barcelona Institute for Global Health (ISGlobal). Dadvand, Sunyer, and colleagues examined the effects of prenatal exposure to traffic-related air pollution on fetal growth and placental function in a newly established cohort of 1,080 women living in Barcelona, Spain.Key takeaways:The study found t...