This briefing paper is a technical summary for policy makers of the status of hybrid vehicle development in the United States. Both sales of hybrid vehicles and the number of hybrid

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.

Road transport is a critical structure for economic development of a country. It influences the pace, structure and pattern of development. India has one of the largest road network in the world.