Transloading, also known as cross-docking, is the process of transferring a

shipment Freight transport, also referred to as freight forwarding, is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been exte ...

from one mode of

transportation Transport (in British English) or transportation (in American English) is the intentional Motion, movement of humans, animals, and cargo, goods from one location to another. Mode of transport, Modes of transport include aviation, air, land tr ...

to another. It is most commonly employed when one mode cannot be used for the entire trip, such as when goods must be shipped internationally from one inland point to another. Such a trip might require transport by

truck A truck or lorry is a motor vehicle designed to transport freight, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construct ...

to an

airport An airport is an aerodrome with extended facilities, mostly for commercial Aviation, air transport. They usually consist of a landing area, which comprises an aerially accessible open space including at least one operationally active surf ...

, then by

airplane An airplane (American English), or aeroplane (Commonwealth English), informally plane, is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, Propeller (aircraft), propeller, or rocket engine. Airplanes come in a vari ...

overseas, and then by another truck to its destination; or it might involve bulk material (such as

coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal i ...

) loaded to rail at the mine and then transferred to a

ship A ship is a large watercraft, vessel that travels the world's oceans and other Waterway, navigable waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research and fishing. Ships are generally disti ...

at a

port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manch ...

. Transloading is also required at railroad

break-of-gauge With railways, a break of gauge occurs where a line of one track gauge (the distance between the rails, or between the wheels of trains designed to run on those rails) meets a line of a different gauge. Trains and rolling stock generally canno ...

points, since the equipment can not pass from one track to another unless bogies are exchanged. Since transloading requires handling of the goods, it causes a higher risk of damage. Therefore, transloading facilities are designed with the intent of minimizing handling. Due to differing capacities of the different modes, the facilities typically require some storage facility, such as

warehouse A warehouse is a building for storing goods. Warehouses are used by manufacturers, importers, exporters, wholesalers, transport businesses, customs, etc. They are usually large plain buildings in industrial parks on the rural–urban fringe, out ...

s or

rail yard A rail yard, railway yard, railroad yard (US) or simply yard, is a series of Track (rail transport), tracks in a rail network for storing, sorting, or loading and unloading rail vehicles and locomotives. Yards have many tracks in parallel for k ...

s. For bulk goods, specialized material handling and storage are typically provided (as, for example, in

grain elevator A grain elevator or grain terminal is a facility designed to stockpile or store grain. In the grain trade, the term "grain elevator" also describes a tower containing a bucket elevator or a pneumatic conveyor, which scoops up grain from a lowe ...

s). Intermodal transport limits handling by using standardized

containers A container is any receptacle or enclosure for holding a product used in storage, packaging, and transportation, including shipping. Things kept inside of a container are protected on several sides by being inside of its structure. The term ...

, which are handled as units and which also serve for storage if needed.

Transloading versus transshipment

Transloading may be confused with

transshipment Transshipment, trans-shipment or transhipment is the shipment of goods or containers to an intermediate destination, then to another destination. One possible reason for transshipment is to change the means of transport during the journey (e.g. ...

, but in modern

usage The usage of a language is the ways in which its written and spoken variations are routinely employed by its speakers; that is, it refers to "the collective habits of a language's native speakers", as opposed to idealized models of how a languag ...

they represent different concepts. Transloading concerns the mechanics of transport, while transshipment is essentially a legal term addressing how the shipment originates and is destined. Consider a load of

grain A grain is a small, hard, dry fruit (caryopsis) – with or without an attached husk, 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 ...

that is transloaded at an elevator, where it is combined with grain from other farms and thus leaves on the train as a distinct shipment from that in which it arrived. It thus cannot be said to be transshipped. Or consider a package shipped through a

package delivery Package delivery, or parcel delivery, is the delivery of shipping containers, parcels, or high-value mail in single shipments. The service is provided by most postal systems, express mail, private courier companies, and less-than-truckload shipp ...

service or by

mail The mail or post is a system for physically transporting postcards, letter (message), letters, and parcel (package), parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid ...

: it may change shipping mode several times along the trip, but since it is (from an external point of view) conveyed as a single shipment regardless of how it is conveyed or what else travels with it on the legs of its journey, it is not considered to be transshipped. Conversely, a load on a truck can be taken in one (legal) shipment to an intermediate point and then to its ultimate destination without ever leaving the truck. If this is specified as two shipments, then the goods are transshipped, but no transloading has taken place. The modern distinction between transloading and transshipment was not well codified in the period of the mid-19th through mid-20th centuries, when discussions of

break of gauge With railways, a break of gauge occurs where a line of one track gauge (the distance between the rails, or between the wheels of trains designed to run on those rails) meets a line of a different gauge. Trains and railroad car, rolling stock g ...

often used the word ''transshipment'' for what today's careful usage would call transloading, or for any combination of transloading and transshipment.

Transloading facilities

Transloading can occur at any place. A

can pull up to another truck or a

train A train (from Old French , from Latin">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... , from Latin , "to pull, to draw") is a series of connected vehicles th ...

, and transloading may be accomplished by no more elaborate means than

teamster A teamster in American English is a truck driver; a person who drives teams of draft animals; or a member of the International Brotherhood of Teamsters, a labor union. In some places, a teamster was called a carter, the name referring to the ...

s and

stevedore A dockworker (also called a longshoreman, stevedore, docker, wharfman, lumper or wharfie) is a waterfront manual laborer who loads and unloads ships. As a result of the intermodal shipping container revolution, the required number of dockwork ...

s. In the interests of speed and efficiency, however, a variety of specialized equipment is used to handle the goods. Thus, intermodal facilities have specialized cranes for handling the

, and

coal pier A coal pier is a transloading facility designed for the transfer of coal between rail and ship. The typical facility for loading ships consists of a holding area and a system of conveyors for transferring the coal to dockside and loading it into ...

s have car dumpers, loaders,

conveyor A conveyor system is a common piece of mechanical handling equipment that moves materials from one location to another. Conveyors are especially useful in applications involving the transport of heavy or bulky materials. Conveyor systems allow ...

s, and other equipment for unloading and loading

railroad car A railroad car, railcar (American English, American and Canadian English), railway wagon, railway carriage, railway truck, railwagon, railcarriage or railtruck (British English and International Union of Railways, UIC), also called a tra ...

s and

s quickly and with a minimum of personnel. Transloading facilities may also make use of a Bulk Transloading System to provide visibility of a transloading operation including rail, storage, over the road drivers, dray drivers, bookings, and the master load plan. Often the equipment used to ship the goods is optimized for rapid transfer. For instance, the shipment of

automobile A car, or an automobile, is a motor vehicle with wheels. Most definitions of cars state that they run primarily on roads, Car seat, seat one to eight people, have four wheels, and mainly transport private transport#Personal transport, peopl ...

s is expedited by autorack rail cars and

roll-on/roll-off Roll-on/roll-off (RORO or ro-ro) ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, Trailer (vehicle), trailers, and railroad cars, that are driven on and off the ship on their ...

ships, which can be loaded without cranes or other equipment. Standardized containers allow the use of common handling equipment and obviate break bulk handling. Transloading is often combined with classification and routing facilities, since the latter often require handling of goods. Transloading may occur at railway sidings and break-of-gauge stations. Where ports are too small to handle large bulk carrier ships, transloading can occur at sea, using transhipment platforms, ships, or floating cranes and barges.

References

* * * Origin, Destination, and Door-to-door Rail Transloading - {{Authority control Freight transport Intermodal transport

Transloading versus transshipment

Transloading facilities

See also

References