Glossary of trucking industry terms in the United States

General				commonly found on large trucks. The word tandem
Bill of lading (BOL, BL, B/L)				itself means "having parts arranged one behind
Main article: Bill of lading				another".
A paper document between a shipper and a carrier				Tandem axle
acknowledging the receipt of goods for transport.				A pair of axles spaced close together.
Usually describes the nature of the cargo; hazardous				Tandem wheel
materials classification (if any); amount of cargo by				A set of dual wheels (on pickup trucks, known as a
weight, size, and/or number of pallets, boxes, barrels,				dually). A tandem assembly is a redundant backup
etc; and the origin and destination of the cargo.				system, if one tire fails the second will maintain support,
Bobtailing				allowing the vehicle to keep driving.
Operating a tractor unit with no trailer attached.				Trailers
Broker				Auto transport
A person or company that arranges for the truck				A specialized trailer or truck/trailer combination used
transportation of cargo belonging to others, using				for transporting passenger vehicles.
for-hire carriers to provide the actual truck				Belly dump
transportation.				See bottom dump.
Bulk cargo				A bottom dump trailer
Main article: Bulk cargo				Bottom dump
Large quantities of undivided or unpackaged cargo,				A dump with a funnel-shaped floor for unloading
such as a tank trailer filled with gasoline.				through the bottom.
Bulk freight				Bull wagonslang, See livestock.
See bulk cargo.				An intermodal container trailer
Cabotage				Car hauler
Main article: Cabotage				See auto transport.
The rights of a country to control the movement of				Chip vanspecially designed bulk dry van with open top
vessels and vehicles transporting goods or passengers				for wood byproducts.
within its borders. May refer to the transportation of				Container
cargo between two points within a country by a				Main article: Intermodal container
vehicle registered in another country.				A simple, enclosed box of standardized sizes, used for
Cargo				intermodal transport.
See freight.				Container chassis
Consignee				A skeletal trailer composed of a simple chassis for the
Main article: Consignee				mounting of an intermodal container.
The person or entity transferring legal responsibility or				Covered wagonslang, A flatbed with specially fitted
ownership of the cargo (or consignment) from the				side plates and curved ribs supporting a tarp covering,
carrier.				commonly referred to as a "side kit". Named for the
Consignment				resemblance to horse-drawn covered wagons.
Main article: Consignment				Curtainside
An agreement between a consignee and a consignor				Can be either a dry box with tarp sides, or a flatbed
in which the goods are taken responsibility for and				with a movable frame of squared ribs supporting a
transported by a third party, the carrier. May also				tarp.
simply refer to the consigned goods (i.e., the cargo).				A double dropdeck flatbed trailer
Consignor				Deep-drop van
Main article: Consignor				A specialized dry van that maximizes interior space,
The person or entity transferring legal responsibility or				with a lowered floor and higher roof. Normally used to
ownership of the cargo (or consignment) to the carrier.				transport bulky, relatively light cargo, such as furniture
Deadheading				and electronics.
Operating a truck with an empty trailer.				Double decker
Demurrage				A specialized trailer with 2 floors to allow for more
A charge by the carrier (any mode) for excess				cargo space.
retention of shipping vessel, container, trailer, etc;				Double dropdeck
caused by untimely unloading				A flatbed with the lowest deck. Featuring a raised step
Electronic on-board recorder (EOBR)				at the front, where the trailer attaches to the fifth
Main article: Electronic on-board recorder				wheel, and at the back, where the wheel wells are
An device hooked into the truck which transmits useful				located. Normally used for oversize/overheight
management information such as truck location, speed,				loads.set-of-doubles (4 units)
and idle time.				Doubles trailer
Float shifting				A trailer between 26 feet (7.9 m) and 29 feet
Shifting gears without using the clutch pedal. Also				(8.8 m) long that can be used singularly as a delivery
called "slip shifting" or "dead sticking."				trailer in congested areas or in combination with
A hazardous materials placard				another trailer for over the road.
Freight				A standard dry van trailer
Main article: Freight				Dropdeck
The materials or goods being transported.				A flatbed with a lowered deck, featuring a raised step
Hazardous materials (Haz-mat)				at the front, where the trailer attaches to the fifth
Main article: Dangerous goods				wheel.
Explosive, flammable, poisonous or otherwise				Dry box
potentially dangerous cargo. Large amounts or				See dry van.
especially hazardous cargo are required to be				Dry bulk
placarded under haz-mat regulations (extensive).				A variation of the liquid tank trailer, with a
Heavy-Haul				funnel-shaped bottom, used for hauling bulk quantities
The transport of loads weighing well beyond standard				of dry powder (sometimes called bulk pneumatic).
weight limits, under special permit, during daylight hours,				Usually loaded through holes in the top, unloaded
and using designated routes, usually with pilot cars.				through the bottom or through pneumatic force.
Intermodal				Dry van
Main article: Intermodal freight transport				A simple, enclosed non-climate controlled rectangular
A single trailer or container that encounters multiple				trailer that carries general cargo, including food and
forms of transportation along its route, such as truck				other products that do not require refrigeration. Usually
ship/rail.				loaded/unloaded through the rear doors, requiring
Just-in-time				elevated access for forklifts to enter the trailer.
Main article: Just-in-time (business)				Dump
A method of inventory control in which warehousing is				A box-like trailer with an open top for loading,
either nonexistent or kept to a minimum. The freight				commonly used for hauling bulk quantities of dirt, rock,
arrives "just in time", and only when it is needed.				gravel, etc.
Log book				Flatbed
Main article: Logbook				A flat trailer with no enclosure or doors. Can be loaded
A form which describes the working duties of truck				unloaded from the sides or above, and does not
drivers for each 24-hour period.				require elevated access for forklifts.
Manifest				A gooseneck lowboy trailer with an oversized load
A document that describes the contents of a shipment				Gooseneck lowboy
in greater detail than a bill of lading. Commonly used as				Main article: Lowboy (trailer)
a checklist during unloading.				A specialized lowered flatbed trailer featuring an
Operating authority				arched coupling arm, normally used for oversize
Motor carriers for-hire must apply for the authority to				overweight loads.
engage in interstate commerce with the Federal Motor				Grain
Carrier Safety Administration.				A rectangular enclosure with an open top for bulk
Oversize load				loading, covered with a tarp, and a funnel shaped
Main article: Oversize load				bottom for unloading grain, fertilizer, etc.
A unit of cargo that is larger than the legally defined				Hopper
limits for width, length, height, and/or weight; it cannot be				See grain.
broken down into smaller units.				Livestock
A typical wooden pallet				A rectangular enclosure with sides featuring numerous
Pallet				ventilation holes, an interior with multiple levels, and
Main article: Pallet				usually a ramp in the rear for loading/unloading. Used
A wooden (or sometimes plastic) platform on which				for hauling cows, pigs, sheep, etc.
boxes or cargo are stacked and sometimes				Live-bottom
shrink-wrapped. Usually refers to the entire palletized				A dry van with solid or openable roof with a moveable
stack of boxes, although it can refer to the platform				mechanized floor for unloading.
itself.				Logger
Progressive shifting				A specialized trailer used for transporting logs,
Main article: Progressive shifting				consisting of a basic, sometimes adjustable length,
A method of shifting gears that optimizes the power				chassis with vertical stakes along the sides to hold the
range of the engine, which in turn optimizes fuel				logs in place.
efficiency.				Lowboy
Receiver				See double dropdeck, or gooseneck lowboy.
Consignee, importer, or buyer (who may or may not				Platform
be the same) named in the bill of lading as the party				See flatbed.
responsible for receiving a shipment.				Portable parking lotslang, See auto transport.
A plastic pallet				Pup
Shipper				1) a rigid Rear-dump pulled behind a standard dump
Consignor, exporter, or seller (who may or may not be				truck. 2) the short second trailer in a Rocky Mountain
the same) named in the bill of lading as the party				Double combination.
responsible for initiating a shipment.				Rear dump
Shore power				A dump with a rear pivot point allowing the front of the
Main article: Shore power				cargo area to be raised vertically for unloading through
A land-based electric power supply for trucks.				the rear.
Eliminates the need for engine idling while parked, and				Reefer
in the case of IdleAire, also supplies land-based climate				See refrigerated van.
control within the truck cab, as well as internet and TV				A rear dump trailer with a daycab tractor
access.				Refrigerated van
Terminal				A refrigerated and insulated box trailer.
A dock or hub where freight either originates,				Side dump
terminates, or is handled in the transportation process;				A dump with front and rear pivot points allowing the
or a location where motor carriers maintain operating				cargo area to tilt sideways for unloading.
facilities.				Side kit
Tractor				See covered wagon.
Main article: Tractor unit				Sideloader
A semi-truck (powered unit) used to pull a load or				A specialized container trailer with cranes on the front
semi-trailer (unpowered unit) by means of a fifth wheel				and rear to allow for on-the-spot loading and unloading.
mounted over the rear axle(s) in a semi-truck				A tank trailer on Interstate 25 at Interstate 80 in
semi-trailer combination.				Cheyenne, Wyoming
Truck Stop Electrification (TSE)				Skateboard
See shore power.				See flatbed.
Drivers and carriers				Stepdeck
Common carrier				See dropdeck.
Main article: Common carrier				Tank
A for-hire carrier that is obligated to serve the general				Main article: Tank truck
public.				An enclosed cylinder-shaped tank used for hauling bulk
Company driver				quantities of liquid.
Employee of a carrier who is assigned to drive				Tanker
company-owned trucks.				See tank.footnote: Since the 1960s, trailer
Contract carrier				manufacturers and the industry in general have
A for-hire carrier contracted to one particular shipper.				developed a myriad of specialized trailers and
A contract carrier enters into a contract whose terms				commodity transfer techniques for more efficiency
are negotiated between a specific carrier and specific				and functionality. Hence, the above glossary is by no
customer.				means complete. Sometimes stationary equipment is
Dedicated route				mounted on or designed around a trailer chassis for
A driver or carrier who transports cargo between				transport to a permanent, or semi-permanent location.
regular, prescribed routes. Regular route drivers usually				Trailer configurations
are at home on regular intervals, given the scheduled				'B' train Double
nature of their routes.				A special set-of-doubles: the second (usually shorter)
For-hire carrier				trailer is hooked directly to the first via a fifth wheel on
A licensed carrier that holds itself out to hire under				the rear of the first one (two semis).
either a public tariff for the general public (for-hire				A rocky mountain double configuration with two dry
common carrier) or under a contract filed with a				bulk trailers
specific shipper (contract carrier). For-hire carriers must				Rocky Mountain Double
apply for operating authority with the Federal Motor				A combination of a standard trailer and a shorter pup
Carrier Safety Administration.				trailer. Legal in more than 20 states, use is usually
Irregular route				restricted to toll roads, freeways, or by permit.
See over-the-road.				Standard
Less-than-truckload (LTL)				A single trailer. Common dimensions range from
Main article: Less than truckload				45 feet (14 m) to 53 feet (16 m) long, and up to
A driver or carrier who specializes in, or a load				13.5 feet (4.1 m) tall.
composed of many different types of cargo, each				Triple
typically weighing less than 10,000 pounds (4,500 kg),				A combination of three doubles trailers. Legal in 17
with many different destinations. Generally involves the				states, usually restricted to major highways, toll roads,
use of terminal facilities to break and consolidate				or freeways.
shipments. A LTL driver normally has a dedicated or				Turnpike Double
regional route.				A combination of two standard trailers. Legal in 18
Long-haul				states, these unusually long combinations are invariably
See over-the-road.				restricted to toll roads or freeways.
Motor carrier				References
A person or company providing transportation of				^ "Truckers, air to benefit from $2 million ARRA state
property or passengers using commercial motor				grant". Memphis Business Journal. 2009-06-29.
vehicles.				Retrieved 2009-07-04.
Over-the-road (OTR)				^ "Ships may plug in while in port". Halifax Herald.
A driver or carrier who transports cargo to any place				2009-06-09. Retrieved 2009-07-04.
at any time, without prescribed schedules or routes.				^ a b c d e f g h i j k l "Truck and Bus Glossary".
Long-Haul OTR involves being away for weeks, or				University of Michigan Transportation Research
months at a time, often cross-country or international				Institute. Retrieved 2008-04-20.
(Canada and Mexico), given the unscheduled nature of				^ Philip Obal (2003). Glossary of supply chain
their routes.				terminology. Industrial Data & Information Inc.
Owner-operator (O/O)				p. 141. ISBN 0-966-93453-9. Retrieved 2009-06-24.
Main article: Owner-operator				^ a b c d e f "Frequently Asked Questions (FAQ) -
Self-employed independent drivers who operate				Registration and Licensing". Federal Motor Carrier
privately owned or leased trucks, as opposed to a				Safety Administration. Retrieved 2008-03-06.
company driver.				^ a b c d e f g h i j k "BTS Dictionary". Bureau of
Private carrier				Transportation Statistics. Retrieved 2009-06-20.
A not-for-hire carrier contracted to or owned by a				^ "cabotage definition". Retrieved 2009-06-13.
shipper that does not offer services to the general				^ "consignment definition". Retrieved 2009-06-13.
public, and operates primarily to transport its own				^ "consignor definition". Retrieved 2009-06-11.
goods. Private carriers are not required to obtain				^ a b c d e f g h i j k l m "TWNA Glossary - Trucking
operating authority by the Federal Motor Carrier				Terms". Trucking's Web Resource for Journalists and
Safety Administration.				Communicators. Retrieved 2008-03-06.
Regional route				^ a b "ATA Glossary of Trucking Terms" (PDF).
A driver or carrier who transports cargo in a limited				American Trucking Associations. Retrieved
geographical area, usually within a certain radius of				2009-08-09.
one's own home or company terminal, and may or				^ "cargo definition". Retrieved 2009-06-11.
may not maintain a schedule.				^ "Part 172: Hazardous materials table, special
Regular route				provisions, hazardous materials communications,
See dedicated route.				emergency response information, training requirements
Team drivers				and security plans". Federal Motor Carrier Safety
A team of two or more drivers who ride together and				Administration. Retrieved 2009-06-11.
drive the same truck in shifts, essentially allowing the				^ "manifest definition". Retrieved 2009-06-11.
truck to remain in motion almost constantly. Primarily				^ Philip Obal (2003). Glossary of supply chain
used for time-sensitive freight.				terminology. Industrial Data & Information Inc.
Truckload (TL)				p. 152. ISBN 0-966-93453-9. Retrieved 2009-06-24.
Main article: Truckload shipping				^ "Oversize and Overweight Load Permit Information".
A driver or carrier who specializes in, or a load				Federal Highway Administration. 2008-08-11. Retrieved
composed of one type of cargo, typically weighing				2009-06-21.
more than 10,000 pounds (4,500 kg), with normally				^ "pallet definition". Retrieved 2009-06-11.
one destination. A truckload driver is normally an				^ Philip Obal (2003). Glossary of supply chain
over-the-road driver with an irregular route.				terminology. Industrial Data & Information Inc.
Vehicles				p. 117. ISBN 0-966-93453-9. Retrieved 2009-06-24.
Big rig				^ "Fuel Economy - CAT Truck Engines". Caterpillar Inc.
See semi-truck.				Retrieved 2009-06-11.
Big truck				^ "Glossary". Retrieved 2009-06-11.
See semi-truck.				^ "shipper definition". Retrieved 2009-06-11.
Bobtail				^ Erica Gies (2009-05-18). "Putting U.S. Trucking on a
Either a tractor without a trailer, or a box truck. In verb				Diet". The New York Times. Retrieved 2009-06-07.
form, this also refers to operating a truck without a				^ "common carrier definition". Retrieved 2009-06-13.
trailer.				^ Laurence Hartley (1995). Fatigue and driving. CRC
Bob truck				Press. p. 152. ISBN 0-748-40262-4. Retrieved
See box truck.				2009-06-21.
A straight truck or box truck				^ Alice Adams (2003). Trucking. Cengage Learning.
Box truck				p. 605. ISBN 1-418-01262-9. Retrieved 2009-06-20.
Main article: Box truck				^ Marjorie Eberts; Margaret Gisler (2008). Careers for
A smaller, single-unit, non-articulated truck, usually				People on the Move & Other Road Warriors (2nd
having between 6 and 10 wheels. Often incorrectly				ed.). McGraw-Hill Professional. p. 57. ISBN
called a 'bobtail.'				0-071-49317-4. Retrieved 2009-06-21.
Cab over				^ a b "Understanding Trucking - What Is an LTL Job?".
Main article: Cab over				Driver Solutions. Retrieved 2009-06-21.
A short, box-shaped tractor with no hood, and a steep				^ Richard Feldman; Marilyn Gross (1996).
vertical front. The "cab" rides "over" the engine and				Transportation Expressions. Diane Publishing. p. 101.
front steering axle. Used when a shorter wheelbase is				ISBN 0-788-17503-3. Retrieved 2009-06-20.
needed.				^ "Driver retention solutions: strategies for for-hire
Combination vehicle				truckload (TL) employee drivers". Entrepreneur Media,
A vehicle composed of two or more separate units, a				Inc. 1996. Retrieved 2009-06-20.
tractor (powered unit, semi-truck) and a trailer				^ a b "Understanding Trucking - What Is an OTR
(unpowered unit, semi-trailer).				Trucking Job?". Driver Solutions. Retrieved
Conventional truck				2009-06-21.
Main article: Conventional truck				^ "private carrier definition". Retrieved 2009-06-13.
A tractor featuring a forward engine and a cab				^ Alice Adams (2003). Trucking. Cengage Learning.
situated in front of the rear axle, with a convential hood				p. 75. ISBN 1-418-01262-9. Retrieved 2009-06-20.
configuration.				^ "truckload (TL) definition". Retrieved 2009-06-13.
Day cab				^ David Diamond (December 2001). "The Trucker
A truck cab without a sleeper berth.				& The Professor". Conde Nast Publications.
Dump truck				Retrieved 2009-06-13.
Main article: Dump truck				^ "Method of converting a truck sleeper cab to a day
Usually refers to a straight truck with a bucket-like				cab". PatentStorm. 2001-01-30. Retrieved 2009-06-13.
cargo area, although it can refer to a semi-truck with a				^ "Jacobs Vehicle Systems - Heavy Duty Engine
dump trailer.				Brake". Jacobs Vehicle Systems. Retrieved
Eighteen-wheeler				2008-04-20.
This term is derived from the number of wheels that				^ "393.76 Sleeper berths". Federal Motor Carrier
the typical OTR tractor-trailer configuration has. See				Safety Administration. Retrieved 2009-06-13.
also semi-truck.				^ Mike Manges (2003). "Are super singles really that
Semi-truck				super?: Wide-base tires may not be ready for line-haul
Main article: Semi-trailer truck				applications". Modern Tire Dealer Magazine. Retrieved
An articulated (jointed) combination vehicle, commonly				2008-02-28.
composed of a 10-wheeled tractor and an 8-wheeled				^ a b Paul Richards. "Wide singles:Then and now".
trailer.				Randall-Reilly. Retrieved 2009-06-13.
Straight truck				^ "Tandem Definition". Retrieved 2009-06-13.
See box truck.				^ a b c d e f g h i j k "Truck Trailers". World Trade
Tractor-trailer				Press. Retrieved 2008-03-06.
See semi-truck.				^ Jim Park. "Freight Focus: Portable Parking Lots".
Truck crane				Newcom Business Media Inc. Retrieved 2009-06-20.
A special truck (carrier) with a permanently mounted				^ Donald F. Wood (2001). Dump Trucks. MBI Publishing.
crane (upper). This design allows faster moves from				p. 159. ISBN 0-760-30867-5. Retrieved 2009-06-20.
site to site than conventional cranes.				^ a b Joyce Slayton Mitchell (2005). Tractor-trailer
Vehicle parts				trucker. Tricycle Press. p. 24. ISBN 1-582-46010-8.
See also Semi-trailer truck#Construction for a diagram				Retrieved 2009-06-20.
of truck parts.				^ "Aero Industries: Side Kits: Flatbed Trailer Side Tarp
Baffle				System". Aero Industries Inc.. Retrieved 2009-06-27.
A partition or separator within a liquid tank, used to				^ John V. Pastva (1989). "Curtainside truck trailer
inhibit the flow of fluids within the tank. During				access system and lock assembly". Google Patents.
acceleration, turning, and braking, a large liquid-filled tank				Retrieved 2009-06-20.
may produce unexpected forces on the vehicle due to				^ "LD 1695, Page 2 - 120th Legislature, First Regular
the inertia of liquids.				Session". Maine.gov. Retrieved 2009-06-20.
Bulkhead				^ "Stevens West - Flatbed & Drop Deck Trailer
A strong wall-like structure placed at the front of a				Selector Guide". Stevens West Inc. Retrieved
flatbed trailer (or on the rear of the tractor) used to				2009-06-20.
protect the driver against shifting cargo during a				^ a b c d e Rand McNally. Large Scale Motor Carriers'
front-end collision. May also refer to any separator				Atlas '05 [map], 2005 edition. ISBN 0-528-90063-3.
within a dry or liquid trailer (also called a baffle for liquid				p. A13.
trailers) used to partition the load.				^ "FR Doc 05-12282". Government Printing Office.
The cab of an 18-wheeler				Retrieved 2009-06-20.
Bunk				^ David Glover (2005). Trucks. Black Rabbit. p. 11. ISBN
See sleeper berth.				1-583-40702-2. Retrieved 2009-06-20.
Cab				^ Donald F. Wood (2001). Dump Trucks. MBI Publishing.
See cabin.				p. 5. ISBN 0-760-30867-5. Retrieved 2009-06-20.
Cabin				^ Michael J. Yakubow (1973). "Removable Gooseneck
Main article: Cabin (truck)				Lowboy Trailer". Google Patents. Retrieved
The interior of a truck where the driver sits to operate				2009-06-20.
the vehicle.				^ George W. Green (2003). Special use vehicles.
Cheater axle				McFarland. p. 226. ISBN 0-786-41245-3. Retrieved
See lift axle.				2009-06-20.
Engine brake				^ Donald F. Wood (2001). Dump Trucks. MBI Publishing.
Main article: Engine brake				p. 128. ISBN 0-760-30867-5. Retrieved 2009-06-20.
A braking system that utilizes the back pressure from				^ Donald F. Wood (2001). Dump Trucks. MBI Publishing.
the engine's pistons to slow down the vehicle.				p. 139. ISBN 0-760-30867-5. Retrieved 2009-06-20.
Commonly used to prevent heavy trucks from				^ "Container Handling". CDK Mobile Systems Inc.
accelerating out of control while driving on steep				Retrieved 2009-06-20. v d e
downhill grades.				Trucking industry in the United States
A fifth wheel coupling platform				Regulated by the Federal Motor Carrier Safety
Fifth wheel				Administration
Main article: Fifth wheel				Regulations
A pivoting platform on the rear of a truck tractor, used				Commercial driver's license Hours of service
to support the front end of the trailer being towed that				Federal Bridge Gross Weight Formula Electronic
contains locking jaws that engage the trailer kingpin.				on-board recorder Motor carrier safety rating
Gladhands				Motor Carrier Act of 1980 International Registration
Interlocking connectors attached to air hoses that				Plan National Network
supply air from the tractor to the trailer for air brakes.				Manufacturers
Headache rack				Trucks: Autocar Freightliner International
See bulkhead.				Kenworth Mack Peterbilt Sterling Volvo
Jake brake				Western Star White
Main article: Jake brake				Engines: Caterpillar Cummins Detroit Diesel
A popular brand of engine brake. See also engine				Mercedes-Benz Navistar
brake.				Motor carriers
Kingpin				Truckload carriers: Covenant England J.B. Hunt
A large pin, underneath the front of a trailer, which				PAM Transport Schneider Swift USA Truck
interlocks with the fifth wheel.				Werner Knight
Landing gear				LTL and parcel carriers: ABF Con-way FedEx
A set of retractable, crank-up legs that support the				UPS YRC (formerly Yellow and Roadway)
front of a trailer when it is not connected to a tractor.				Moving companies: Allied Atlas Bekins Gentle
A dump truck with a raised lift axle				Giant Moving Company Graebel Global
Lift axle				Mayflower North American PODS United
An air-powered axle that may be raised or lowered to				Shleppers Moving & Storage
the ground to provide greater load-carrying capacity,				Truck stops
or to comply with axle weight requirements (see also				Bosselman Flying J Iowa 80 Petro Pilot Road
Federal Gross Weight Bridge Formula).				Ranger Roady's TravelCenters Love's Town
Retarder				Pump
Main article: Retarder (mechanical engineering)				People
A device used to assist braking that does not use				Reginald Denny Jimmy Hoffa Fred Smith John B.
friction. such as engine braking or axle-mounted				Hunt Kelly Reno Iyman Faris Larry Walters
electromagnetic retarders. See also engine brake.				Keith Jesperson
Sleeper berth				Organizations
Main article: Berth (sleeping)				Teamsters Union Owner-Operator Independent
The portion of the truck's interior designated for				Drivers Association American Trucking
sleeping, legally must contain a bed.				Associations SmartWay Transport Partnership
Super single				Glossary
A single, larger wheel, substituted for a tandem				Glossary of trucking industry terms in the United
assembly. The main benefit of a super single is a				States
reduction in weight; combined with lower rolling				Popular culture
resistance the super single promises better fuel				Film: Black Dog Convoy Duel F.I.S.T. Maximum
economy. The disadvantage is the lack of tire				Overdrive The Gang's All Here Smokey and the
redundancy from which tandem wheels benefit, as tire				Bandit (series) They Drive by Night White Line
failure can disable the vehicle.				Fever Joy Ride
Tandem				Television: B.J.
May refer to the set of dual wheels or dual axles

TRailersInc

Glossary of trucking industry terms in the United States