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Illustration of aerodynamic light-, medium, and heavy-duty vehicles.

NREL research helps optimize the energy efficiency of a wide range of vehicle technologies and applications.

NREL's innovative transportation research, development, and deployment projects accelerate widespread adoption of high-performance, low-emission, energy-efficient passenger and freight vehicles, as well as alternative fuels and related infrastructure. The following NREL transportation projects are propelling advances in each of these areas.