Explanatory Notes on Main Statistical Indicators

Length of Railways in Operation refers to the total length of the trunk line under passenger and freight transportation (including both full operation and temporary operation). The calculation is based on the actual length of the first line even if this line has a full or partial double track or more tracks, excluding double tracks, station sidings, tracks under the charge of stations, branch lines, special-purpose lines and the non-payable connecting lines. The length of railways in operation is an important indicator to show the development of the infrastructure for the railway transport, and also the essential data to calculate volume of passenger freight transport, traffic density and utilization efficiency of the locomotives and carriages.

Length of Electrified Railways refers to the length of the section of railways in operation in which the power supply lines and other equipment are installed for the running of electrified locomotives. The proportion of the length of electrified railways to the total length of railways in operation is an important indicator to show the modernization of railways.

Automatic-blocking and Semi-automatic-blocking Length of Railways refer to length of railways installed with equipment to perform automatic or manual blocking of trains. Blocking is a spacing technique by which a section of the railway only allows one train to pass at a time in the aim of ensuring the traffic safety. the proportion of automatic/semi-automatic blocking length to the total length of railways in operation is an important indicator to show the modernization of railways.

Length of Highways refers to the length of highways which are built in conformity with the grades specified by the highway engineering standard formulated by the Ministry of Communications, 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 ferries. 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 important indicator to show the development of the 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 regular civil aviation flights. There are usually two ways to calculate the distance between airports connected by the route length: One is to put the length of all air routes together, called duplicated calculation of the length of the routes; the other is not to allow the duplication in calculation when two or more routes passing the same section of aviation routes. The latter is usually used, as it can precisely show the size of the civil aviation network and indicate the extent of civil aviation serving the national economy and the people.

Length of Oil (Gas) Pipelines 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 in 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, excluding double pipelines.

Freight (Passenger) Traffic refers to the volume of freight (passenger) transported with various means. Freight transport is calculated in tons and passenger traffic is calculated in the number of persons. Despite the type of freight and traveling distance, the freight transport is calculated in t he actual weight of the goods: and despite the traveling distance and ticket price, the passenger traffic is calculated by the principle that one person can be counted only once in one travel. The passengers who travel with a half price ticket or a child ticket is also calculate das one person. The freight (passenger) traffic provides a quantitative measure to show how the transport industry serves the national economy and people, and is also an important indicator for planning the transport industry and for studying the development scale and speed of the transport industry.

Freight (Passenger) Traffic Density refers to the freight (passenger) traffic volume carried by a particular means of transportation during a given period through one kilometer of a specific section of transportation route. The formula is as follows:

Freight (Passenger) Traffic Density =[Freight Ton-kilometers (Passenger-kilometers )] / (Length of Rout e in Operation)

Measuring unit: ton-kilometer / kilometer (or person-kilometer/ kilometer)

Freight (passenger) traffic density reflects the degree of business of freight (passenger) traffic on transportation routes, and therefore provides important information for balancing transport cap ability, planning const ruction and up grading of transport routes and studying t he distribution of transport network.

Freight Ton-kilometers (Passenger-kilometers) refer to the sum of the products of the volume of transported cargo (passengers) multiplying by the transport distance. It is an important indicator to reflect the achievement of transportation industry. Normally, the shortest distance between the departure station and the destination station (i.e., the payable distance) is the basis to calculate the freight ton-kilometers. This is an import ant indicator to show the total results of the transport industry, to prepare and examine the transport plan and to measure the efficiency, the lab our productivity and t he unit cost of transport.

The formula is as follows:

Freight Ton-kilometers (Passenger-kilometers) =∑{Freight(Passenger) Traffic×Distance of Transportation}

Measuring unit: ton-kilometer (person-kilometer)

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 Car= (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. The difference between the average marked load and the static load of freight cars reflects the utilization of loading capacity of freight cars. For its calculation the following formula is app lied:

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-kilometers accomplished by each freight transport locomotive over day and night during a given period of time. It includes both the weight of the goods carried and the deadweight 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 Locomotive (ton kilometer)=[(Total Ton/(Kilometers 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 transport management office under department of public security at the end of reference period. They are divided into following categories according to the structure of motor vehicles: passenger vehicles, trucks and others; and private vehicles and vehicles for units use according to ownerships; working vehicles, non-working vehicles and special motor vehicles according to kind of usage; large passenger vehicles, medium passenger vehicles and small passenger vehicles, heavy trucks, light-heavy trucks and light trucks according to sizes of vehicles.

Business Volume of Post and Telecommunications refers to the total amount of post and telecommunication services, expressed in value terms, provided by the post and telecommunications departments for the society. Post and telecommunication services can be classified as letters, parcels, remittance, issue of newspapers and magazines, fast mail service, express mail service, savings deposits, stamps for collection, public and individual telegraph service, facsimiles, long-distance telephone service, leasing of telephone lines, urban paging service, mobile telephone service, data transfer and transmission, etc. The accounting approach is to multiply the service products of all types with their average unit price (constant price) to get sum of business value, plus income from other services such as leasing of telephone lines and equipment, maintenance of telephone switchboards and lines on behalf of customers . This indicator reflects the overall results of post and telecommunications service during a given period, and is important to study the composition of business service and the development of post and telecommunications service.

The formula is as follows:

Business Volume of Post and Telecommunications= ∑(Transaction of Post and Telecommunication Service × Constant Price) + Income from Leasing, Maintenance and other Services

Mobil e Telephone Subscribers refer to the persons who own mobile telephone numbers and are connected with the mobile telephone communication network through the mobile telephones witch boards, including contracted subscribers and prepaid subscribers for intelligent network. One mobile telephone is taken as a subscriber.

Local Telephone Subscribers refer to subscribers that are connected to the local telecommunication service provider through fix line network, including household subscribers, institutional subscribers and public telephones. They are also classified as city subscribers and rural subscribers according to locations. Before 1997, city subscribers referred to those connected to city telephone networks in county towns and cities, while village subscribers referred to those connected to village telephone stations at and below counties. Since 1997, the classification of telephone subscribers was modified on the basis of physical location of the subscribers as urban telephone subscribers and rural telephone subscribers , which is different from the previous classification of categorizing local telephones and rural telephones , while the definition of total subscribers and total number of telephones remain unchanged.

Urban Telephone Subscribers refer to number of telephone subscribers, located at municipalities, cities under the jurisdiction of province, cities at prefecture level, downtown and suburb of city at county level town and county towns (including country towns where county government located, and towns of count y level according to the administrative organizational system),that are connected to the public line telephone network, including rural mineral area, forest area, military area.

Rural Telephone Subscribers refer to telephone subscribers, located at counties (towns) and villages out side the range of cities according to administrative jurisdiction.

Household Telephone Subscribers refer to telephone sets in stalled in the dwelling units of urban or rural residents, and registered as residence subscribers for payment, including 3 types of payment for the service: private payment, public payment and free service. Capacity of Long Distance Telephone Exchanges: refers to the rated cap a city 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, excluding the capacity of subscribers' exchanges.

Capacity of Mobile Telephone Exchanges refers to the capacity of the maximum services provided to subscribers at onetime basing on a certain model and transacting capacity of the mobile telephone exchanges.