jargon
Jargon is the specialized terminology associated with a particular field or area of activity. Jargon is normally employed in a particular communicative context and may not be well understood outside that context. The context is usually a partic ...
describe the tools, equipment, and employment sectors used in the
trucking industry in the United States
The trucking industry serves the American economy by transporting large quantities of raw materials, works in process, and finished goods over land—typically from manufacturing plants to retail distribution centers. Trucks are also used in th ...
. Some terms may be used within other English-speaking countries, or within the
freight
Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including tran ...
industry in general (air, rail, ship, and manufacturing). For example,
shore power Shore power or shore supply is the provision of shoreside electrical power to a ship at berth while its main and auxiliary engines are shut down.landing gear
Landing gear is the undercarriage of an aircraft or spacecraft that is used for takeoff or landing. For aircraft it is generally needed for both. It was also formerly called ''alighting gear'' by some manufacturers, such as the Glenn L. Mart ...
" (from the
aviation
Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes airplane, fixed-wing and helicopter, rotary-wing types, morphable wings, wing-less lifting bodies, as well as aerostat, lighter- ...
industry), which refers to the legs which support the front end of a
semi-trailer
A semi-trailer is a trailer without a front axle. In the United States, the term is also used to refer to the combination of a truck and a semi-trailer; a tractor-trailer.
A large proportion of a semi-trailer's weight is supported by a trac ...
when it is not connected to a semi-truck. Some nicknames are obvious wordplay, such as "portable parking lot", in reference to a truck that carries automobiles.
General
;Bill of lading (BOL, BL, B/L):
:A paper document between a shipper and a carrier acknowledging the receipt of goods for transport. Usually describes the nature of the cargo; hazardous materials classification (if any); amount of cargo by weight, size, and/or number of pallets, boxes, barrels, etc; and the origin and destination of the cargo.
;Bobtailing:Operating a tractor unit with no trailer attached.
;Broker:A person or company that arranges for the truck transportation of cargo belonging to others, using for-hire carriers to provide the actual truck transportation.
;Bulk cargo:
:Large quantities of undivided or unpackaged cargo, such as grain or dry powder.
;Bulk freight:See ''
bulk cargo
Bulk cargo is commodity cargo that is transported unpackaged in large quantities.
Description
Bulk cargo refers to material in either liquid or granular, particulate form, as a mass of relatively small solids, such as petroleum/ crude oi ...
''.
;Cargo:See ''
freight
Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including tran ...
''.
;CB:See '' CB radio - Citizen's Band Radio''.
:CB radio equipment is found in the vast majority of 18-wheelers and is used by truckers for various purposes, including talking to other truckers on the highway, discussing road and weather conditions, coordinating activity at distribution centers and truckstops and various other purposes, including emergency communications. In the United States, many truckers monitor CB channel 19 (27.185 MHz), commonly known as the "highway channel" or "trucker's channel".
;Consignee:
:The person or entity transferring legal responsibility or ownership of the cargo (or consignment) from the carrier.
;Consignment:
:An agreement between a consignee and a consignor in which the goods are taken responsibility for and transported by a third party, the carrier. May also simply refer to the consigned goods (i.e., the cargo).
;Consignor:
:The person or entity transferring legal responsibility or ownership of the cargo (or consignment) to the carrier.
;Deadheading:
:Operating a truck empty.
;Electronic on-board recorder (EOBR):
:A device hooked into the truck which transmits useful management information such as truck location, speed, and idle time.
;Float shifting:Shifting gears without using the clutch pedal. Also called "slip shifting" or "dead sticking".
;Freight:
:The materials or goods being transported.
;Hazardous materials (Haz-mat):
:Explosive, flammable, poisonous or otherwise potentially dangerous cargo. Large amounts or especially hazardous cargo are required to be
placard A placard is a notice installed in a public place, like a small card, sign, or plaque. It can be attached to or hung from a vehicle or building
A building, or edifice, is an enclosed structure with a roof and walls standing more or less perma ...
ed under haz-mat regulations.
;Intermodal:
:A single trailer or container that encounters multiple forms of transportation along its route, such as truck/ship/rail.
;Just-in-time:
:A method of inventory control in which warehousing is either nonexistent or kept to a minimum. The freight arrives "just in time", and only when it is needed.
;Log book:
:A form which describes the working duties of truck drivers for each 24-hour period.
;Manifest:A document that describes the contents of a shipment in greater detail than a bill of lading. Commonly used as a checklist during unloading.
;Operating authority:Motor carriers for-hire must apply for the authority to engage in interstate commerce with the
Federal Motor Carrier Safety Administration
The Federal Motor Carrier Safety Administration (FMCSA) is an agency in the United States Department of Transportation that regulates the trucking industry in the United States. The primary mission of the FMCSA is to reduce crashes, injuries and ...
.
;Oversize load:
:A unit of cargo that is larger than the legally defined limits for width, length, height, and/or weight; it cannot be broken down into smaller units.
;Pallet:
:A wooden (or sometimes plastic) platform on which boxes or cargo are stacked and sometimes shrink-wrapped. Usually refers to the entire palletized stack of boxes, although it can refer to the platform itself.
;Receiver:Consignee, importer, or buyer (who may or may not be the same) named in the bill of lading as the party responsible for receiving a shipment.
;Shipper:A consignor, exporter, or seller (who may or may not be the same) named in the bill of lading as the party responsible for initiating a shipment.
;Terminal:A dock or hub where freight originates, terminates, or is handled in the transportation process; or a location where motor carriers maintain operating facilities.
;Tractor:
:A semi-truck (powered unit) used to pull a load or semi-trailer (unpowered unit) by means of a fifth wheel mounted over the rear axle(s) in a semi-truck/semi-trailer combination.
;
Truck Stop Electrification Shore power or shore supply is the provision of shoreside electrical power to a ship at berth while its main and auxiliary engines are shut down.IdleAire, also supplies land-based climate control within the truck cab, as well as Internet and TV access.
;Weigh station:
:A chosen point off the highway, where the state highway patrol examines the weight of a vehicle that weigh over 10,000 pounds.
Drivers and carriers
;Common carrier:
:A for-hire carrier that is obligated to serve the general public.
;Company driver:Employee of a carrier who is assigned to drive company-owned trucks.
;Contract carrier:A for-hire carrier contracted to one particular shipper. A contract carrier enters into a contract whose terms are negotiated between a specific carrier and specific customer.
;Dedicated route:A driver or carrier who transports cargo between regular, prescribed routes. Regular route drivers usually are at home on regular intervals, given the scheduled nature of their routes.
;For-hire carrier:A licensed carrier that holds itself out to hire under either a public tariff for the general public (for-hire common carrier) or under a contract filed with a specific shipper (contract carrier). For-hire carriers must apply for operating authority with the Federal Motor Carrier Safety Administration.
;Irregular route:See '' over-the-road''.
;Less-than-truckload (LTL):
:A driver or carrier who specializes in, or a load composed of many different types of cargo, each typically weighing less than , with many different destinations. Generally involves the use of terminal facilities to break and consolidate shipments. A LTL driver normally has a dedicated or regional route.
;Long-haul:See '' over-the-road''.
;Motor carrier:A person or company providing transportation of property or passengers using commercial motor vehicles.
;Over-the-road (OTR):A driver or carrier who transports cargo to any place at any time, without prescribed schedules or routes. Long-Haul OTR involves being away for weeks, or months at a time, often cross-country or international (Canada and Mexico), given the unscheduled nature of their routes.
;Owner-operator (O/O):
: Self-employedindependent drivers who operate privately owned or
lease
A lease is a contractual arrangement calling for the user (referred to as the ''lessee'') to pay the owner (referred to as the ''lessor'') for the use of an asset. Property, buildings and vehicles are common assets that are leased. Industrial ...
d trucks, as opposed to a
company driver
A company, abbreviated as co., is a legal entity representing an association of people, whether natural, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared go ...
.
;Private carrier:A not-for-hire carrier contracted to or owned by a shipper that does not offer services to the general public, and operates primarily to transport its own goods. Private carriers are not required to obtain operating authority by the Federal Motor Carrier Safety Administration (FMCSA).
;Regional route:A driver or carrier who transports cargo in a limited geographical area, usually within a certain radius of one's own home or company terminal, and may or may not maintain a schedule.
;Regular route:See ''
dedicated route
Dedicated may refer to:
Music
* Dedicated, a British record label whose artists included Spiritualized
Albums
* ''Dedicated'' (ATB album), 2002
* ''Dedicated'' (Renée Geyer album), 2007
* ''Dedicated'' (Carly Rae Jepsen album), 2019
* '' ...
''.
;Team drivers:A team of two or more drivers who ride together and drive the same truck in shifts, essentially allowing the truck to remain in motion almost constantly. Primarily used for time-sensitive freight.
Vehicles
;Big rig:See '' semi-truck''.
;Big truck:See '' semi-truck''.
;Bobtail:A tractor without a trailer. In verb form, this also refers to operating a truck without a trailer.
;Cab over:
:A short, box-shaped tractor with no hood (''UK: bonnet''), and a steep vertical front. The "cab" rides "over" the engine and front steering axle. Used when a shorter
wheelbase
In both road and rail vehicles, the wheelbase is the horizontal distance between the centers of the front and rear wheels. For road vehicles with more than two axles (e.g. some trucks), the wheelbase is the distance between the steering (fron ...
is needed.
;Combination vehicle:A vehicle composed of two or more separate units, a
tractor
A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction. Most commo ...
(powered unit, semi-truck) and a trailer (unpowered unit, semi-trailer).
;Conventional truck:
:A truck or tractor featuring an engine forward of the cab, with a conventional hood configuration.
;Day cab: A truck cab without a sleeper berth.
;Dump truck:
:A truck with a bucket-like cargo area which the front can be raised, hinging on the rear, allowing the load to slide ("dump") out of the cargo area. Often a straight truck, semi-trailers are also common. Flatbeds and refuse container trucks can often "dump", but are rarely called that.
;Eighteen-wheeler: This term is derived from the number of tires that the typical OTR tractor-trailer configuration has. See also '' semi-truck''.
;Semi-truck:
:An
articulated
An articulated vehicle is a vehicle which has a permanent or semi-permanent pivot joint in its construction, allowing it to turn more sharply. There are many kinds, from heavy equipment to buses, trams and trains. Steam locomotives were sometim ...
(jointed) combination vehicle, often composed of a 10-wheeled (three axle) tractor and a 4-wheeled (two axle) trailer. There are also two axle tractors, single axle trailers, and occasionally combinations with extra lift axles. In some applications a semi can pull additional full trailers (doubles and triples) with the use of a single axle or tandem axle converter dolly. The use of the term "semi" in the name comes from the semi-trailer, a vehicle whose load is carried partly by its own axles and partly by the pulling vehicle, which is commonly included in tractor-trailer rigs.
;Straight truck:A single vehicle, with no articulation. Normally 2 or 3 axles, sometimes with lift axles.
;Tractor-trailer:See '' semi-truck''.
;Truck crane: A special truck (carrier) with a permanently mounted crane (upper). This design allows faster moves from site to site than conventional cranes.
Vehicle parts
:''See also Semi-trailer truck#Construction for a diagram of truck parts.''
;Baffle:A partition or separator within a liquid tank, used to inhibit the flow of fluids within the tank. During acceleration, turning, and braking, a large liquid-filled tank may produce unexpected forces on the vehicle due to the
inertia
Inertia is the idea that an object will continue its current motion until some force causes its speed or direction to change. The term is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law ...
of liquids.
;Bulkhead:A strong wall-like structure placed at the front of a flatbed trailer used to protect the driver against shifting cargo during a front-end collision. May also refer to any separator within a dry or liquid trailer (also called a baffle for liquid trailers) used to partition the load. ''See also: headache rack''.
;Bunk:See '' sleeper berth''.
;Cab:The interior of a truck where the driver sits to operate the vehicle.
;Cheater axle:See '' lift axle''.
;Dual wheels:A pair of tire and wheel assemblies mounted side-by-side on a single axle hub. In some applications it is replaced by a
super single
Gavin Trippe (1940 - 2 July 2018) was a motorcycle racing promoter, journalist, and publisher who was inducted to the Motorcycle Hall of Fame in 2005. He died following an automobile accident in California.
Trippe was a motorcycling journalist ...
. On
pickup truck
A pickup truck or pickup is a light-duty truck that has an enclosed cabin, and a back end made up of a cargo bed that is enclosed by three low walls with no roof (this cargo bed back end sometimes consists of a tailgate and removable covering) ...
s it is sometimes called a ''dually''. The assembly has a greater load carrying ability as compared to a single wheel. It also provides redundancy so if one of the two tires fail the second will maintain support preventing loss of vehicle control and allowing the vehicle to travel to a repair facility.
;Engine brake:
:A braking system that utilizes the back pressure from the engine's pistons to slow down the vehicle. Commonly used to prevent heavy trucks from accelerating out of control while driving on steep downhill grades.
;Fifth wheel:
:A pivoting platform on the rear of a truck tractor, used to support the front end of the trailer being towed that contains locking jaws that engage the trailer kingpin.
;Float
:A popular name for a wide tire used on the steer (front) axle (originally known as a Super Single). Floats distribute the weight on the front axle over a wider area, preventing the tire sinking into softer ground. Commonly used on dump trucks, cement mixers, etc.
;Glad hands:Interlocking connectors attached to air hoses that supply air from the tractor to the trailer for air brakes.
;Headache rack:A sturdy aluminum wall or steel mesh structure affixed to the tractor between the cab and the fifth wheel to protect the tractor occupants from the load on the trailer. See also: '' #Bulkhead''
;Jake brake:
:A popular brand of engine brake. See also '' engine brake''.
;Kingpin:A large pin, underneath the front of a trailer, which interlocks with the fifth wheel.
;Landing gear:A set of retractable, crank-up legs that support the front of a trailer when it is not connected to a tractor.
;Lift axle:An air-powered axle that may be raised or lowered to the ground to provide greater load-carrying capacity, or to comply with axle weight requirements (see also Federal Gross Weight Bridge Formula).
;Retarder:
:A device used to assist braking that does not use friction. such as engine braking or axle-mounted electromagnetic retarders. See also '' engine brake''.
;Sleeper berth:The portion of the truck's interior designated for sleeping, legally must contain a bed.
;Super single: A popular name for a single, larger wheel and tire, (properly called a "wide-base tire"), substituted for a tandem assembly. The main benefit of a super single is a reduction in weight; combined with lower rolling resistance the super single promises better fuel economy. The disadvantage is the lack of tire redundancy from which tandem wheels benefit, as tire failure can disable the vehicle and increased highway wear, through the high point loading and scrubbing of road surfaces when making tight turns.
;Tandem axle:A set of axles spaced close together, legally defined as more than 40 and less than 96 inches apart by the USDOT.
Trailers
;Auto transport:A specialized trailer or truck/trailer combination used for transporting passenger vehicles.
;Belly dump:See '' bottom dump''.
;Beverage trailer: A trailer between 26 feet (7.9 m) and 29 feet (8.8 m) used primarily for the transport of beverages. Colloquially known as a sidebanger, sideloader, or route trailer.
;Bottom dump:A dump with a funnel-shaped floor for unloading through the bottom.
;Bull wagon: See ''
livestock
Livestock are the domesticated animals raised in an agricultural setting to provide labor and produce diversified products for consumption such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to ani ...
''.
;Car hauler:See '' auto transport''.
;Chip van: specially designed bulk dry van with open top for wood byproducts.
;Container:
:A simple, enclosed box of standardized sizes, used for intermodal transport.
;Container skeletal carrier:A skeletal trailer composed of a simple chassis for the mounting of an intermodal container.
;Covered wagon: A flatbed with specially fitted side plates and curved ribs supporting a tarp covering, commonly referred to as a "side kit". Named for the resemblance to horse-drawn
covered wagon
The covered wagon or prairie wagon, historically also referred to as an ambulance or prairie schooner, was a vehicle usually made out of wood and canvas that was used for transportation, prominently in 19th-century America. With roots in the he ...
s.
;Curtainside:Can be either a dry box with tarp sides, or a flatbed with a movable frame of squared ribs supporting a tarp.
;Deep-drop van:A specialized dry van that maximizes interior space, with a lowered floor and higher roof. Normally used to transport bulky, relatively light cargo, such as furniture and electronics.
;Double decker:A specialized trailer with 2 floors to allow for more cargo space.
;Doubles trailer:A trailer between and long that can be used singularly as a delivery trailer in congested areas or in combination with another trailer for over the road.
;Dropdeck:A flatbed with a lowered deck, featuring a raised step at the front, where the trailer attaches to the fifth wheel.
;Dry bulk:A variation of the liquid tank trailer, with a funnel-shaped bottom, used for hauling bulk quantities of dry powder (sometimes called bulk pneumatic). Sometimes referred to as a 'Teat Truck' or 'Teater' due to its appearance. Usually loaded through holes in the top, unloaded through the bottom or through pneumatic force.
;Dry van:A simple, enclosed non-climate controlled rectangular trailer that carries general cargo, including food and other products that do not require refrigeration. Usually loaded/unloaded through the rear doors, requiring elevated access for
forklifts
A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various ...
to enter the trailer.
;Dump:A bucket-like trailer with an open top for loading, commonly used for hauling bulk quantities of dirt, rock, gravel, etc. See
dump truck
A dump truck, known also as a dumping truck, dump trailer, dumper trailer, dump lorry or dumper lorry or a dumper for short, is used for transporting materials (such as dirt, gravel, or demolition waste) for construction as well as coal. A t ...
.
;Flatbed:A flat trailer with no enclosure or doors. Can be loaded/unloaded from the sides or above, and does not require elevated access for forklifts.
;Gooseneck lowboy:
:A specialized lowered flatbed trailer featuring an arched coupling arm, normally used for oversize/overweight loads.
;Grain or Hopper-Bottom :A rectangular enclosure with an open top for bulk loading, covered with a tarp, and a funnel shaped bottom for unloading grain, fertilizer, etc.
;Hopper:See ''
grain
A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legum ...
''.
;Livestock:A rectangular enclosure with sides featuring numerous ventilation holes, an interior with multiple levels, and usually a ramp in the rear for loading/unloading. Used for hauling cows, pigs, sheep, etc.
;Live-bottom: A dry van with solid or openable roof with a moveable mechanized floor for unloading.
;Logger:See ''
timber
Lumber is wood that has been processed into dimensional lumber, including beams and planks or boards, a stage in the process of wood production. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, w ...
''.
;Lowboy:See '' double dropdeck'', or '' gooseneck lowboy''.
;Platform:See '' flatbed''.
;Portable parking lot: See '' auto transport''.
;Pup:A trailer between and long that can be used singularly as a delivery trailer in congested areas or in combination with another trailer for over the road.
;Rear dump:A dump with a rear pivot point allowing the front of the cargo area to be raised vertically for unloading through the rear.
;Reefer:See ''
refrigerated van
A refrigerated van (also called a refrigerated wagon) is a railway goods wagon with cooling equipment. Today they are designated by the International Union of Railways (UIC) as Class I.
History
The first wagons were cooled with ice that had ...
covered wagon
The covered wagon or prairie wagon, historically also referred to as an ambulance or prairie schooner, was a vehicle usually made out of wood and canvas that was used for transportation, prominently in 19th-century America. With roots in the he ...
''.
;Sideloader:(aka Sidelifter) A specialized container trailer with cranes on the front and rear to allow for on-the-spot loading and unloading.
;Skateboard:See '' flatbed''.
;Stepdeck:See '' dropdeck''.
;Tank:
:An enclosed cylinder-shaped tank used for hauling bulk quantities of liquid.
;Tanker:See ''
tank
A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and good battlefield mobility provided by tracks and a powerful ...
''.
;Timber:A specialized trailer, used for transporting logs, consisting of a basic chassis with vertical stakes along the sides to hold the logs in place. There are several types of timber trailers: ''Long wood trailers''; Usually with four stakes, but can have more, evenly spaced for tree length logs to be carried longwise on the trailer; ''Short wood trailers'', with two separated sets of four of stakes, commonly referred to as a double bunk, and piggyback trailers. These trailers can be self loaded onto the back of a truck Retrieved 2012-04-06
Trailer configurations
;'B' train Double: A special set-of-doubles: the second (usually shorter) trailer is hooked directly to the first via a fifth wheel on the rear of the first one (two semis).
;Rocky Mountain Double (occasionally called an 'A' train): A combination of a standard trailer and a shorter pup trailer. Legal in more than 20 states, use is usually restricted to toll roads, freeways, or by permit.
;Standard: A single trailer. Common dimensions range from to long, and up to tall.
;Triple: A combination of three pup trailers. Legal in 17 states, usually restricted to major highways, toll roads, or freeways.
;Turnpike Double: A combination of two standard trailers. Legal in 18 states, these unusually long combinations are usually restricted to toll roads or freeways.