India is in the process of developing fuel efficiency standards for new heavy-duty vehicles (HDVs), and one of the most critical inputs to regulatory development is a technology potential analysis to determine the efficiency levels that the fleet can reasonably achieve over the duration of the regulation.

Heavy-duty vehicles (HDVs) represent only 4% of the on-road fleet in the European Union, but are responsible for 30% of on-road CO 2 emissions. Countries around the world are implementing standards to regulate CO2 emissions from HDVs.

India is currently considering establishing fuel efficiency regulation for new trucks and buses. This process formally started in July 2014 when the Ministry of Petroleum and Natural Gas officially constituted a Steering Committee to guide the regulatory development process (Minstry of Petroleum & Natural Gas 2014).

On June 19, 2015, the U.S. Environmental Protection Agency and the National Highway Traffic Safety Administration jointly proposed new standards to reduce the fuel consumption and greenhouse gas emissions of new heavy-duty vehicles, tractors, trailers, and engines.

As policymakers and stakeholders in India begin the regulatory development process for fuel efficiency standards for new heavy-duty vehicles (HDVs), one of the key areas of debate has been whether or not separate performance standards for engines are an appropriate first step.

The primary objectives of this paper are to explore methods for testing and certifying the fuel efficiency of HDVs and vehicle components in the established and emerging regulatory programs around the world and the implications for India, as policymakers there deliberate establishing a performance standard of their own.

This paper provides a summary of recent data for real-world fuel consumption of HDVs—specifically, tractor-trailers—in three regions: the United States, China, and the

As regulatory agencies in the U.S. work on the second phase of heavy-duty vehicle greenhouse gas (GHG) and efficiency standards, one of the key decisions they face concerns the regulatory certification pathways.

Mexico is planning to revise its existing emissions standards for diesel heavy-duty vehicles (HDVs). The existing regulation, Norma Oficial Mexicana 044 (NOM 044), requires new vehicles to meet either U.S. Environmental Protection Agency (EPA) 2004 or Euro IV standards.

Worldwide, commercial vehicles are the largest growing contributor to air pollution, fuel consumption, and global warming emissions in the on-road transportation sector.