Key messagesLow-carbon mobility is healthy and cost-effectiveTransitioning to low-carbon transport reduces greenhouse gas emissions and also significantly improves public health, for example, by encouraging active mobility and lowering air pollution levels. These improvements contribute to decreased health-care expenditures, with the potential to balance investment costs in the long run.Urgent nee...

Since the beginning of 21st century, global greenhouse gas (GHG) emissions had followed an increasing trend mainly due to the increase in emissions from China and the other emerging economies. As a result, the atmospheric concentrations of greenhouse gases substantially increased enhancing the natural greenhouse effect, which may negatively affect the life on the Earth.According to the latest data...

This Draft East African Standard specifies requirements and methods of sampling and test for automotive gasoline, Premium Motor Spirit (PMS), also commonly known as petrol, for use in spark ignition engines, including those equipped with devices to reduce emitted pollutants. The standard applies to PMS as manufactured, stored, transported and marketed....

The National Air Quality Officer’s Annual Report aims to inform stakeholders about progress in implementing South Africa’s National Environmental Management: Air Quality Act (NEM: AQA) and its National Framework. The report evaluates the effectiveness of air quality management measures in protecting public health and the environment, preventing air pollution, and promoting ecologically sustainable...

The DieselNet India page summarizes India’s vehicle and engine emission standards, which are implemented under the Bharat Stage (BS) system based on European norms....

This guidance was developed to clarify how the on-road testing requirement can be met in states with mandatory enhanced vehicle emission inspection and maintenance (I/M) programs. On-road testing is a necessary element of an I/M program that is required by the Clean Air Act (CAA) to be operated at the enhanced performance level. On-road testing involves the collection of emissions data from a samp...

EPA has adopted emission standards for almost every kind of engine, including everything from lawn mowers to cruise ships. To show compliance with these emission standards, engine manufacturers must follow test procedures specified in the Code of Federal Regulations. This page provides links to the appropriate regulatory citations and includes published information related to the test procedures. ...

On December 20, 2022, EPA adopted a final rule, “Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards,” that sets stronger emissions standards to further reduce air pollution, including pollutants that create ozone and particulate matter, from heavy-duty vehicles and engines starting in model year 2027. The final program includes new, more stringent emissions s...

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....