主要统计指标解释

铁路营业里程  又称营业长度，指投入客货运输营业或临时营业的线路长度。

电气化里程  指具备了电力机车牵引条件，并已交付运营的线路里程。

公路里程  指报告期末公路的实际长度。统计范围：包括城间、城乡间、乡（村）间能行驶汽车的公共道路，公路通过城镇街道的里程，公路桥梁长度、隧道长度、渡口宽度。不包括城市街道里程，断头路里程，农（林）业生产用道路里程，工（矿）企业等内部道路里程。统计原则：按已竣工验收或交付使用的实际里程计算；两条或多条公路共同经由同一路段的重复里程，只计算一次。

定期航班航线里程  指定期航班营运里程的总长度，以万公里为计算单位。航线里程的统计分为按重复距离计算和按不重复距离计算两种形式。“按重复距离计算”是指不同航线的相同航段距离可以重复累加；“按不重复距离计算”则不同航线相同航段只统计一次。

管道输油(气)里程  指油、气、成品油等各类介质实际输送距离，是反映运输管线长度的指标，也是计算周转量的依据。对于有复线和备用线的地段，原则上按单线计算管输里程。双线同时输送又不能分开计量的情况下，管输里程为双线长度之和除以2。

货(客)运量  指在一定时期内，各种运输工具实际运送的货物重量(旅客数量）。货运按吨计算，客运按人计算。货物不论运输距离长短、货物类别，均按实际重量统计。旅客不论行程远近或票价多少，均按一人一次客运量统计；半价票、儿童票也按一人统计。

货物(旅客)周转量  指在一定时期内，由各种运输工具运送的货物(旅客)数量与其相应运输距离的乘积之总和。该指标可以反映运输业生产的总成果，也是编制和检查运输生产计划，计算运输效率、劳动生产率以及核算运输单位成本的主要基础资料。计算货物周转量通常按发出站与到达站之间的最短距离，也就是计费距离计算。计算公式为：

货物（旅客）周转量=∑（货物（旅客）运输量×运输距离）

民用汽车拥有量  指报告期末，在公安交通管理部门按照《机动车注册登记工作规范》，已注册登记领有民用车辆牌照的全部汽车数量。汽车拥有量统计的主要分类：根据汽车结构分为载客汽车、载货汽车及其他汽车；根据汽车所有者不同分为个人(私人)汽车、单位汽车；根据汽车的使用性质分为营运汽车、非营运汽车；根据汽车大小规格不同，载客汽车分为大型、中型、小型和微型，载货汽车分为重型、中型、轻型和微型。

邮政电信业务总量  指以货币形式表示的邮政、电信通信企业为社会提供各类邮政、电信通信服务的总数量。计算方法为各类业务的实物量分别乘以相应的不变单价，求出各类业务的货币量加总求得。没有不变单价的业务按其业务收入直接相加。

移动电话用户  指在电信运营企业营业网点办理开户登记手续，通过移动电话交换机进入移动电话网，占用移动电话号码的各类电话用户。包括各类签约用户、智能网预付费用户、无线上网卡用户。

互联网上网人数  指过去半年内使用过互联网的6周岁及以上中国居民人数。

固定电话用户  指在电信企业登记注册，且在报告期末实际已经接入电信企业固定电话网（包括局用电话交换机、接入网设备、软交换用户接入设备、无线市话设备）上的全部电话用户。包括普通电话用户、无线接入电话用户、公用电话用户、窄带综合业务数字网(N-ISDN)用户、集中用户交换机(CENTREX)用户、模拟中继线用户等。

互联网宽带接入用户  指报告期末在电信企业登记注册，通过xDSL、FTTx+LAN、FTTH/O以及其他宽带接入方式和普通专线接入公众互联网的用户。互联网宽带接入用户按行政区划分为城市宽带接入用户和农村宽带接入用户；按客户类别分为家庭宽带接入用户和政企宽带接入用户。

电子商务销售额  指报告期内企业（单位）借助网络订单而销售的商品和服务总额（包含增值税），借助网络订单指通过网络接受订单，付款和配送可以不借助于网络。

电子商务采购额  指报告期内企业（单位）借助网络订单而采购的商品和服务总额（包含增值税），借助网络订单指通过网络发送订单，付款和配送可以不借助于网络。

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 in full operation or temporary operation.

Length of Electrified Trunk Line refers to the length of the trunk line capable for the running of electrified locomotives and having been put into operation.

Length of Highways refers to the actual length of highways at the end of reference period. It covers public roads running vehicles among cities, city and rural areas, township (villages), highways passing through streets at small cities and towns, length of bridges and tunnels, width of ferry piers. It does not include the length of streets in cities, dead end highways, the length of streets built for agricultural (forest) production and inside factories (mines). It can only be calculated with the actual mileage having been completed, checked and accepted or put into operation. If two or more highways go the same section of the way, the length of the section is only calculated for once.

Length of Routes with Scheduled Flights refers to the total length of all routes for scheduled flights, which is calculated using million kilometres as the unit. There are usually two ways to calculate the route length: duplicated calculation and non-duplicated calculation. Duplicated calculation means that the same segment of different routes can be added duplicately, while the non-duplicated calculation allows the same segment of different routes be counted once only.

Length of Oil (Gas) Pipelines  refers to the actual transport distance of oil, gas and oil products, an indicator reflecting the length of transportation routes and a reference to calculate the freight-kilometers. For those sections with double pipelines and alternate pipeline, the length will be calculated according to the length of single pipeline in principle. If the double pipelines perform the transportation at the same time and unable to be counted separately, the length of pipelines will be the length of double pipelines divided by 2.

Freight (Passenger) Traffic  refers to the weight of freight (number of passenger) transported with various means within a specific period of time. 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:

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. Business volume of post and telecommunications is the sum of each service in kind multiplying with its correspondent unit price (constant price). Business without constant price add their business revenue directly.

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 various types of subscriber, prepaid users for intelligent network and wireless network card users.

Internet Users refer to the number of Chinese citizens aged 6 and over who use the Internet in the past six months.

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, wireless local telephone subscribers, public telephones subscribers, N-ISDN subscribers and intelligent network terminal subscribers.

Broadband Connection Terminals refer to the connection terminals to internet users actually installed and put into operation, including connection terminals for XDSL, connection terminals for LAN, and other types of connection terminals. N-ISDN connection terminals are not included.

E-commerce Sales Volume refer to the total amount of goods and services (including value-added tax) sold by enterprises (units) with the help of online orders during the reporting period. With the help of network orders, orders can be accepted through the network, and payment and distribution can be made without the help of network.

E-commerce Purchase Volume refer to the total amount of goods and services (including value-added tax) purchased by enterprises (units) with the help of network orders during the reporting period. With the help of network orders, orders are sent through the network, and payment and distribution can be made without the help of network.