Although with the evolution of international trade and the specialization of affairs, the work of transportation has become more specialized and safer, but its complexity has also increased. This complexity is such that specialized companies called forwarders take over the transportation process and traders are usually less involved in the work.
To choose the method of transportation, several factors must be considered, including the geographical conditions of the countries of origin and destination, the distance between the buyer and the seller, time, risk, cost, type of goods, weight, etc .; For example, the capacity of vehicles can be very different.
Air transport is the fastest, safest and most expensive method, and in contrast, the maritime method is the slowest, safest and at the same time the cheapest method. In addition to the above methods, transportation in pipes, ducts, and wires is also considered as a method of transportation. However, due to the limitations in the use of these methods and its special conditions, they will not be mentioned in this section.
