Transport demand

3, derived

: Transportation Demand,
on transport demand
so-called transport demand is derived demand by other economic or social activities. Supply function can in theory be the origin of the goods and sales to the demand function (or curve) derived transport demand function (or curve). But in reality World Steel Pipe News , in the case of multiple origin of the goods and sales to co-exist and there are a variety of alternative modes of transport, transport demand and supply and demand balance on the transport market will be presented with a very complex state.

cargo transport service providers face a wide variety of goods. Carriage of goods vary in weight, volume, shape, nature, packaging, and thus the requirements of the conditions of transport, different, different measures must be taken during transport, such as oil and other liquid cargo needed a tanker or pipeline transportation perishables need to use refrigerated trucks transport, chemicals, dangerous goods, Haul and so require special transport conditions. For passenger transport demand for the quality of service requirements is also diverse. Different aspects of passenger travel purposes, income levels, the composition, quality of transport services requirements were inevitable diversity. Transport demand is not just a quantitative concept, it has the quality requirements, safety, speed, convenience, comfort, and to meet the logistics efficiency requirements is a concrete manifestation of the quality of transport. Transport service providers must adapt to the needs of multi-level quality of transport.

, time-specific

4, space-specific

, diversity

transport demand is largely a derived demand. In economic life, if the demand of a commodity or services derived from another or a few commodities or services needs out World Steel Pipe News , then the demand for the goods or services is a derived demand. Cause the demand for the goods or services derived demand is called derived demand. Derived is an important feature of the transport demand. Obviously, the owner or visitor to the displacement requirements of purpose is often not the displacement itself, but only the middle of an essential part of its production life, the other needs to complete the space displacement.

the speed of transportation and transportation costs are directly proportional to the consumers of transport services between the speed of transportation and transportation costs be weighed against the costs as small as possible and as quickly as possible, the necessary human and material displacement.

modern human social activities, all aspects are inseparable from the human and material displacement space, transport demand arising from every corner of human life and social production, this displacement in part by the private or the manufacturer itself, not the formation of transport demand, and most need to be completed by the public transport industry. The transport sector as a separate industry sector, and exist independently of any social activities can not be divorced from it, compared with the demand for other goods and services, transportation demand extensive, is a kind of a universal demand.

process, also known as the transport distance, the displacement of the starting point of the cargo or passenger space only the distance between the points.

passenger and freight transport demand in the time of occurrence of a certain regularity, such as weekends and major festivals around the passenger demand was significantly higher than at other times, the City the traffic of the peak of the busy period of the harvest season to work on time, vegetables and fruits is also the transportation of these goods, these reflect the requirements of transport demand is time specific. Transport demand imbalance caused by the time the transportation and production time is not balanced.

time another layer of meaning is the transport speed. Passenger and freight transport demand with strong time constraints, transport consumers of transport services of departure and arrival time have their own specific requirements.

transportation needs
1, extensive

6, part of the irreplaceable

different transport needs generally speaking can not replace each other, such as the displacement of people apparently can not replace the cargo displacement from Beijing to Lanzhou displacement not a substitute for the displacement of Beijing to Guangzhou to transport cement instead of shipped fruit, because this is obviously a different transport needs. But in other cases, people can be some of the material displacement to make alternative arrangements. Such as the transportation of coal can be long-distance high-voltage transmission line replacement; in industrial production, when the separation of the raw materials and product markets between the delivery of raw materials or delivery of finished products or semi-production location to make a choice. This part of the transport demand substitutability location theory to solve the location problem and the national economy of major construction projects for technical and economic analysis. Part of the personnel flow in some cases can be modern means of communication alternative.

flow of cargo or passenger space displacement of the geographic trends that came from where to where to go;

flow rate refers to transport consumer goods to achieve the speed of displacement of the whole process of transportation.

the relationship
transportation needs of people accepted the willingness to pay of the transport services, while it also reflects the changes of this desire with the shipping price or cost level. Total transport spending part of the transport demand, but not all, because it does not tell us traffic with price changes.

for freight transport demand in the direction is often unbalanced, particularly bulk cargo such as coal, oil, ore, there are obvious flow direction, which is caused by cargo traffic imbalance in the direction of the main reasons.

demand for transport of goods, the ever-changing commodity market, the owner of the beginning and ending time requirements vary, the requirements of a variety of goods on the transport speed is a big difference; for the transportation of passengers, each person's travel the purpose and requirements of travel time is different. Time-specific nature of transport demand leads to the transport needs of two elements: the flow of the transport demand and flow.

flow refers to the requirements of the transport needs of beginning and ending time of spatial displacement;

transport demand on the displacement requirements, and this displacement with the direction of displacement between two points specified transport consumers, that is, that the transport needs of the space-specific. Transport demand constitute two elements of the transport demand flows and processes.