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 JTJB01-2003] in certain period, 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 , width of ferry piers and phased
construction of road that has been put into use. 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 |
= ∑ |
freight |
× |
distance of |
|
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) |
= |
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 |
= |
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 |
= |
ton-kilometres |
|
Daily number of
freight |
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.