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Heavy truck efficiency supply curve


Better design can save up to 45% of U.S. heavy truck fuel, or 1.7 Mbbl/d in 2050 at a weighted-average cost around $1.00 per gallon of saved diesel fuel. Truck design focuses on six major areas: lightweighting, improved aerodynamics, low rolling resistance tires/wide base single tires, engine thermal efficiency gains, auxiliary power units to reduce or eliminate idling, and automatic manual transmissions. Techno-economic estimates for heavy truck efficiency potential are the product of a multi-year study of class-8 trucks conducted by the National Research Council. The 45% estimate does not consider engine hybridization, an attractive investment for many medium- and short-haul routes.


A: Bockholt, Wendy, and Matthew Kromer. 2009. Assessment of Fuel Economy Technologies for Medium- and Heavy-Duty Vehicles. TIAX LLC.

B. NESCCF, SwRI, and TIAX. 2009. Reducing Heavy-Duty Long Haul Combination Truck Fuel Consumption and CO2 Emissions. Boston, MA: NESCCF; Washington DC and San Francisco: ICCT. link

C. Vyas, A., C. Saricks, and F. Stodolsky. 2002. The Potential Effect of Future Energy-Efficiency and Emissions: Improving Technologies on Fuel Consumption of Heavy Trucks. Argonne, IL: Center for Transportation Research.