Explanatory Notes on Main Statistical Indicators

Length of Railways in Operation refers to the total length of the trunk line for passenger and freight transportation (including both full operation and temporary operation). The calculation is based on the actual length of the first line if this line has a full or partial double (or more). Not included are double tracks, station sidings, tracks under the charge of stations, branch lines, special-purpose lines and non-payable connecting lines. The length of railways in operation is an important indicator to show the development of the infrastructure of railway transport. It is also essential data to calculate volume of passenger freight transport, traffic density and utilization efficiency of locomotives and carriages.

Length of Automatic-blocking and Semi-automatic-blocking Railways Blocking is a spacing technique by which a section of the railway only allows one train to pass at a time with the aim of ensuring traffic safety. Length of automatic-blocking and semi-automatic-blocking railways refers to length of railways installed with equipment to perform automatic or manual blocking of trains.

Length of Highways refers to the length of highways which are built in conformity with the grades specified by the highway engineering standard [Highways WTBZ-Technical Standard JTJ01-88] formulated by the Ministry of Transport, and have been formally checked and accepted by the departments of highways and put into use. The length of highways includes that of the suburb highways at large and medium-sized cities, highways passing through streets at small cities and towns, and also the length of bridges and ferry piers. It does not include the length of streets in big and medium-sized cities and highways built for the production purpose at factories, mines, forest areas and agricultural areas. If two or more highways go the same section of the way, the length of the section is only calculated for once and no duplication is allowed. The length of highways is an indicator to show the development of the scale of highway construction and to provide essential information to calculate the transport network density.

Length of Civil Aviation Routes refers to the length of all routes for civil aviation flights, which is used to account the freight, during the period of statistics.. There are usually two ways to calculate the route length: duplicated calculation and non-duplicated calculateion, the former is the sum of length of all civil aviation routes, and the latter should deduct the duplication length of same route among all routes.

Length of Oil (Gas) Pipelines is used as an indicator to show the development, scale and level of the pipeline transportation. It refers to the actual transport distance of oil (or gas) products, and is in general calculated according to the length of single pipeline. If the length of the double pipelines and alternate pipeline are included, it is called the extension length of the oil (gas) pipelines, which indicates the actual length of the pipelines built. The commonly used indicator, the “length of “oil (gas)” pipelines, does not include the double pipelines. It can reflect the extent and level of development of pipeline transport.

Freight (Passenger) Traffic refers to the volume of freight (passenger) transported with various means within a specific period of time. This indicator reflects the service of the transport industry towards the national economy and people’s living conditions, as well as an important indicator used in formulating and monitoring transport production plans and research into the scale and pace of transport development. Freight transport is calculated in tons and passenger traffic is calculated in terms of number of persons. Freight transport is calculated in terms of the actual weight of the goods and takes no account of the type of freight and distance of travel. Passenger traffic is calculated by the principle that one person can be counted only once in one trip and takes no account of the travelling distance and ticket price. The passengers who travel with a half price ticket or a child’s ticket is also calculated as one person.

Freight Ton-kilometres (Passenger-kilometres) refers to the sum of the product of the volume of transported cargo (passengers) multiplied by the transport distance. It is an important indicator to reflect the achievement of the transportation industry. This is an important indicator to show the total results of the transport industry; to prepare and examine the transport plan; and to serve as the main basic data for calculating the efficiency, labour productivity and unit cost of transport. Normally, the shortest distance between the departure station and the destination station (i.e., the payable distance) is the basis in calculating the freight ton-kilometres. The formula is as follows:

Freight ton-kilometres (passenger-kilometres) | = | ∑ | freight (passenger) traffic | × | distance of transportation |

Average Static Load of Freight Cars refers to the average cargo weight as loaded by each freight car under the static condition at the departure station. It is used to show the utilization extent of the loading capacity of the freight cars. The formula is:

Static load (ton) of freight cars= | tonnage of goods dispatched
number of freight cars loaded

The static load of freight cars is determined by the nature and type of goods loaded the type of vehicles, and the technique of loading. Comparison of the average marked load with the static load of freight cars provides indication on the degree of utilization of loading capacity of freight cars. For its calculation the following formula is applied:

Utilization rate of capacity of freight cars (%)= | Average static load | ×100%
Average marked load

Average Daily Haul of Freight Locomotives refers to the average total ton-kilometres accomplished by each freight transport locomotive over one day and night during a given period of time. It includes both the weight of the goods carried and the dead weight of the train itself. It is a comprehensive indicator reflecting the locomotive efficiency in terms of both time and the pulling force.

Average daily haul of freight transport locomotives = (ton-kilometre) | Total ton-kilometres of freight
Daily number of freight transport locomotive

Possession of Civil Motor Vehicles refer to the total numbers of vehicles that are registered and received vehicles license tags according to the Work Standard for Motor Vehicles Registration formulated by the Transport Management Office under the department of public security at the end of the reference period. They are divided into categories. According to the structure of motor vehicles, they are divided into passenger vehicles, trucks and others; according to ownership into private vehicles and vehicles for the unit’s use; according to kind of usage into working vehicles and non-working vehicles; and according to size of vehicles into large passenger vehicles, medium-sized passenger vehicles, small passenger vehicles and mini passenger vehicles, heavy trucks, light-heavy trucks, light trucks and mini-trucks.

Business Volume of Post and Telecommunications refers to the total amount of postal and telecommunication services, expressed in value terms, provided by the post and telecommunications departments for society. This indicator reflects the overall results of development of postal and telecommunication services. It can be classificated as postal services and and telecommunication services. Business volume of post and telecommunications is the sum of all services in kind multiplying with the unit price (constant price) to get the total business value.

Mobile Telephone Subscribers refer to persons who have gone through registration procedures in the operation points of enterprises engaged in telecommunications and are hence connected with the mobile telephone communication network through the mobile telephone switchboards and occupy mobile phone numbers. Included are GSM digital mobile phone subscribers, CDMA digital mobile phone subscribers and subscribers to intelligent phone cards with roaming facility issued by telecommunications enterprises and which have been subscribed to and activated at the end of the reference period.

Internet Users refer to the number of Chinese citizens aged 6 and over who use the Internet at least for one hour each week.

Local Telephone Subscribers refer to all subscribers who have gone through registration procedures in the operation points of enterprises engaged in telecommunications and are hence connected to the local telecommunications service provider through fixed line network. Included are general subscribers, public telephones subscribers, N-ISDN subscribers and intelligent network terminal subscribers. They are also classified in terms of administrative districts as urban telephone subscribers and rural telephone subscribers according to location.

Household Telephone Subscribers refer to telephone sets installed in the dwelling units of urban or rural residents, and registered as residence subscribers for payment, including three types of payment for the service: private payment, public payment and free service in accordance with relevant regulations.

Capacity of Long Distance Telephone Exchanges refers to the rated capacity of telephone exchanges to connect long distance telephone network, including capacity of international telephone exchanges.

Capacity of Office Telephone Exchanges refers to the capacity (measured in gate) of telephone exchanges installed in the offices of telecommunication service providers for communication between fixed telephones. It includes the capacity of both manual and automatic exchanges in use and for stand-by purpose. The capacity of subscriber exchanges is not included.