Because air transportation is less restricted by natural geography in the air, the route is generally point-to-point direct, and the shortest distance between the two points is taken. Generally, it is transported by passenger or cargo planes. Compared with sea transportation and rail transportation, it has the advantage of time. This feature of air freight is adapted to the transportation needs of some special items, such as: seafood, meat products, animals and plants. Air transportation has door-to-door service, which is effective in timeliness and safety. Larger protection.
Because sea transportation has to travel on natural waterways, it is not restricted by roads, tracks, and routes, and it has a large transportation volume (the fifth-generation container ship can carry more than 5000 TEU with a 20-foot container as the standard) and low freight costs (the sea lane is generally Natural waterways and port facilities are generally constructed by the government and have low operating costs.
Because of the characteristics of high safety, fast transportation speed, long transportation distance, large transportation volume and low cost, railway transportation has the advantages of low pollution, large potential, and not affected by weather conditions. In actual operation, the speed of railway is generally 80KM~ 150KM per hour, each train can transport approximately 2 to 3 kilotons, and it can run as planned.
Compared with sea transportation and railway transportation, air transportation has the disadvantage of fixed routes. That is to say, if there is no direct flight, it can only reach the destination by transferring, and the aircraft space is relatively limited, and the width and height of the cargo are strictly limited. The price is also relatively high.
Compared with air transportation and rail transportation, due to the restrictions of waterways and ports, the accessibility and flexibility of sea transportation will not be too high, because large ships have large ships, high flow resistance in routes, low speeds, and timeliness of freight.
Compared with air transportation and sea transportation, rail transportation is relatively short because of the relatively short transportation distance [can only pass where the rails are connected], and the freight is higher than sea transportation. Trucks are grouped for a long time and cannot be serviced door-to-door. The number of trains is fixed and cannot be parked anywhere. Disadvantages of long residence time and poor mobility.