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greater than 5%, and four provided savings between 4% and 5%, compared with an unmodified trailer. Skirts with reduced ground clearance offer greater fuel savings; in one instance, reducing ground clearance from 16 in (41 cm) to 8 in (20 cm) resulted in an improvement in fuel
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Trailer skirts comprise a pair of panels affixed to the lower side edges of a trailer, running most of the length of the trailer and filling the gap between the forward and rear axles. Trailer skirts are typically constructed of
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Since the wide adoption of trailer skirts, incidents of them becoming detached and colliding with other vehicles have increased. On
October 18, 2018, a trailer skirt came off of a tractor trailer traveling East in
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on adoption of fuel efficient technologies and practices found trailer skirts to be the most widely adopted technology of those studied, having been adopted by seven of the ten major shipping fleets in the study.
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study found fuel savings of up to 15% for the particular design studied. Sean Graham, president of a major supplier of trailer skirts, estimates that in typical use, drivers see fuel savings of 5% to 6%.
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design, allowing installation on a variety of trailer lengths. Skirts generally weigh between 70 and 160 kg (150 and 350 lb). Installation typically requires three to five
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Trailer tails, boat tails, or rear fairings comprise a set of panels, usually collapsible, which fold out from the rear of the trailer, creating a tapered shape that reduces
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of ten to eighteen months, while "advanced" skirts (those that improve fuel efficiency by over 7%) are estimated to pay for themselves in seven to fourteen months.
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As of 2018, over 60% of new trailers produced in
Australia are equipped with skirts, whereas the figure is over 50% for the North American market.
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On the Road to a fuel-efficient truck: A Guide for
Purchasing Aerodynamics for Heavy-Duty Tractors and Trailers
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created behind the trailer. Trailer tails alone have demonstrated a fuel savings of 1%–5%, and in concert with
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433:"EPA Smartway Verification of Trailer Undercarriage Advanced Aerodynamic Drag Reduction Technology"
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65:), affixed to the rear. Several such devices have been recognized by the U.S.
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At least one model of trailer tail, trade named
TrailerTail, is part of
458:"Aerodynamic Truck Trailer Cuts Fuel And Emissions By Up To 15 Percent"
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529:"KPD names driver killed by flying metal piece from tractor-trailer"
547:"Fleets Adopt Trailer Fuel-Efficiency Tech as Federal Rules Stall"
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Trailers with skirts fitted have also demonstrated reduced
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1300 to $ 2700). Standard trailer skirts have an estimated
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SmartWay
Technology: About the SmartWay Technology Program
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of nine trailer skirt designs found that three provided
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Commercial
Carrier Journal – Fleet Management Magazine
503:"Study: Fuel efficiency efforts pay off for carriers"
371:"New Aerodynamic Trailer Skirt Technology Introduced"
292:, an aerodynamically shaped trailer in use in the UK
272:SuperTruck project, which will use $ 37 million of
241:Trailer tail at the rear of a semi-trailer in 2013
201:, and drivers have reported improved stability in
260:TrailerTail is a registered trademark of STEMCO.
160:As of 2009, a set of trailer skirts cost between
565:"SmartWay Verified List of Aerodynamic Devices"
229:and hit a westbound car, killing its driver.
218:North American Council for Freight Efficiency
73:, making them eligible for funding under the
53:), affixed to the underside of trailers, and
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45:. The two major types of device in use are
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257:, 9% improvement has been demonstrated.
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587:"TrailerTail® Fuel Savings Technology"
567:. U.S. Environmental Protection Agency
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345:"Trailer skirts: A proven fuel-saver"
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431:Wood, Richard (September 24, 2012).
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311:"Verified Aerodynamic Technologies"
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501:Dunn, Jill (September 8, 2014).
276:grants to build next generation
189:savings from 4% to 7%. One 2008
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31:Semi-trailer aerodynamic devices
373:. Trucking Info. March 26, 2013
319:Environmental Protection Agency
67:Environmental Protection Agency
27:Fuel economy improvement device
462:Delft University of Technology
191:Delft University of Technology
75:Diesel Emissions Reduction Act
71:SmartWay Transport Partnership
37:, for the purpose of reducing
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120:with trailer skirts installed
658:Shipping and the environment
351:. Business Information Group
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663:Transportation engineering
611:U.S. Trademark 77,152,970
410:Natural Resources Canada
290:Teardrop trailer (truck)
180:A 2012 investigation by
653:Automotive technologies
274:US Department of Energy
107:Detail of trailer skirt
33:are devices affixed to
628:July 17, 2011, at the
486:: CS1 maint: others (
280:and tractor trailers.
249:from the low-pressure
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402:"Trailer side skirts"
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227:Knoxville, Tennessee
216:A 2014 study by the
673:Energy conservation
668:Transport economics
623:Navistar SuperTruck
553:. August 29, 2018.
264:SuperTruck project
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164:1500 and C$ 3000 (
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118:semi-trailer truck
437:SAE International
182:SAE International
16:(Redirected from
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186:fuel savings
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149:person-hours
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125:Construction
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176:Performance
51:side skirts
642:Categories
596:2018-10-15
591:stemco.com
551:Trucks.com
297:References
270:Navistar's
203:crosswinds
199:tire spray
140:fiberglass
59:boat tails
43:turbulence
626:Archived
533:wbir.com
482:cite web
284:See also
209:Adoption
132:aluminum
571:29 June
144:modular
136:plastic
278:trucks
138:, or
61:, or
573:2016
515:2014
488:link
474:2014
444:2014
418:2014
379:2014
357:2014
326:2014
251:wake
247:drag
166:US$
156:Cost
57:(or
49:(or
162:C$
69:'s
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