The Model 386 liquefied natural gas (LNG) truck from Peterbilt Motors Co. has become the first U.S. Environmental Protection Agency SmartWay certified alternative fueled vehicle, the company said.

Peterbilt is proud that the Model 386 LNG has been recognized as the industry’s first alternative fueled vehicle to obtain SmartWay designation,” said Bill Jackson, Peterbilt general manager and Paccar vice president. “The Model 386 LNG SmartWay designated vehicle offers optimal fuel and emissions efficiency with horsepower and torque equal to a diesel-fueled engine, making it the ultimate environmentally sound performance solution for customers, and further demonstrates Peterbilt as an industry leader in developing innovative quality products.”

Peterbilt’s Model 587, Model 386, and Model 384 are also SmartWay designated vehicles for meeting fuel-saving, low-emissions standards.

The 386 LNG truck includes an aerodynamic package designed to handle its workload, which can include line, bulk, and tanker hauling. It includes roof fairings with trim tabs that propel air over the cab and trailer, re-contoured chassis fairings with a “flair” design pushing airflow around the tires and wheels, and an exclusive Peterbilt transition fairing positioned between the cab and detachable sleeper directing airflow over and around the sleeper.

There is also a composite molded sunvisor featuring a Gurney strip design that transitions air more efficiently over the cab while providing glare protection for drivers. Three inch rubber mounts are fastened to the end of the sleeper driving airflow out and around the trailers.

“Peterbilt is always looking to achieve the next level of innovation and operating efficiency,” said Landon Sproull, Peterbilt chief engineer. “Through extensive aerodynamic analysis and testing, Peterbilt engineers combined the industry-leading Model 386 aerodynamic package with the Westport GX engine to provide the most fuel efficient, performance configuration.”

The LNG truck is powered by an EPA-certified 15L Westport GX engine, offering up to 475 hp. and 1,750 lbs.-ft. of torque. It uses high pressure direct injection technology (HPDI), specialized cryogenic fuel tanks, and associated electronic components to facilitate robust performance and reliable operation.