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TrailerTail receives DOT length exemption

TrailerTail receives DOT length exemption

ATDynamics Inc. announced that its aerodynamic TrailerTail, a patented rear-drag reduction device for tractor-trailers proven to improve fuel efficiency by 5%, has received an exemption from the U.S. Department of Transportation’s length restrictions on commercial motor vehicles. After a review process, the agency has confirmed that the TrailerTail meets federal standards of crash safety, lighting and conspicuity, and size.

The TrailerTail fairing is constructed of lightweight, durable panels designed to endure daily wear and driver abuse. Its patented design collapses from four feet to three inches in length in less than six seconds—folding flat against rear swing-doors of refrigerated, dry van, and dropdeck trailers to maintain normal access to cargo.

Third-party SAE J1321 testing conducted in 2007 showed that the TrailerTail boosts fuel efficiency by 5.1% at 62 mph. With diesel prices above $3 per gallon, the TrailerTail can save the trucking industry more than $2 billion in fuel costs annually based on typical long-haul trailer mileage.

ATDynamics elected earlier in 2008 to subject the TrailerTail to a series of safety trials, including a crash test. Testing was conducted by an independent laboratory authorized to perform compliance testing under U.S. automotive safety programs. ATDynamics submitted test results for joint review by the Federal Highway Administration, the National Highway and Traffic Safety Administration, and the Federal Motor Carrier Safety Administration.

On October 10, the U.S. DOT issued a letter certifying the TrailerTail’s length exemption for reference by law enforcement officials and trucking companies.

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