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. Typically, one of the first steps in any comprehensive technology potential analysis is
determining what technology areas can make the most significant contributions to overall vehicle efficiency improvements. The objective of this paper is to present a primary analysis to estimate how improvements in engine and tire technology will translate to fuel consumption reductions for a select number of representative HDV types in India.