Piggy Back:
It is a combination of rail and road. The containers are placed on railway flat-cars and transported by rail from one terminal to another. After reaching the destination terminal, they can be placed on trailers and transported by roads which are also called as TOFC that is Trailer on Flat Car or COFC- Container on Flat Car.
The best known and most widely used intermodal system is the trailer on a flatcar (TOFC). Piggyback or trailer – on flatcar is specialized form of containerization in which rail and transport coordinate. In piggyback, the carrier places the carrier trailer on a rail flatcar, which moves the trailer by rail for long distances. And then motor carrier moves the trailer for short distances for pickups and deliveries.
Container on flat car (COFC):-
Railways offer double stack cars which allow two containers to be transported on one railcar. This type of service allows a shipper to transport goods over water and surface without having to waste time and money unloading and reloading trailers or railcars. COFC allows for inexpensive and efficient transportation of wide variety of goods.
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