Respuesta :
In intermodal transportation, piggyback describes the use of both rail and trucks for transportation. Hence, option (D) will be considered suitable.
Give a brief account on Intermodal freight transport.
Intermodal freight transport entails moving cargo in an intermodal container or vehicle between different means of transportation (such as trucks, trains, ships, and airplanes) without handling the cargo itself. By minimizing cargo handling, the system enhances security, lowers the risk of damage and loss, and speeds up the delivery of freight. The main advantage for intercontinental use is lower prices compared to road trucking. Reduced road travel timings over shorter distances might make up for this. Prior to the development of the railways, intermodal transportation began in England in the 18th century. On the Bridgewater Canal in England in the 1780s, coal was shipped in some of the first containers. The first canals and railroads quickly began using coal containers, often known as "loose boxes" or "tubs," for road/rail transfers (road at the time meaning horse-drawn vehicles).
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