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Devices that can reduce drag on semi trucks


Narrator:            This is Science Today. Helping industry improve the fuel economy for semi-trucks has been a national goal for over a decade. Kambiz Salari, a senior scientist at the Lawrence Livermore National Laboratory, says the U.S. Department of Energy has been providing resources to help industry.

Salari:                        Basically in the area of research and development and doing device development, drag reduction, aerodynamics and we have been involved in this laboratory to push the technology for drag reduction.

Narrator:            Salari and his team use computations and conduct experiments to test their devices.

Salari:                        We try to put additional hardware on the trailer, both between the tractor and the trailer, on the trailer and also at the back of the trailer. And those are the treatments that we are currently investigating.

Narrator:            Using these devices can boost fuel efficiency by as much as 12 percent, which is equivalent to about $10 billion saved every year. For Science Today, I'm Larissa Branin.