Length of Civil Aviation Routes refers to the length of all routes for regular civil aviation flights. It includes the channels open to navigation for over an accumulative 3 months in a year, yet this does not include the river courses which are only used to float odd logs and bamboo rafts. Length of Navigable Inland Waterways an indicator reflecting the size and development of inland water network, it refers to the length of the natural rivers, lakes, reservoirs, canals, and ditches open to navigation during a given period, which enables the transport by ships and rafts. 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. 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. 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. 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. 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. Automatic (semi-automatic) blocking length of railways refers to railways installed with equipment to perform automatic or manual blocking of trains, 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. 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.Īutomatic-blocking and Semi-automatic-blocking Length of Railways Blocking is a spacing technique by which a section of the railway only allows one train to pass at a time, in order to ensure the traffic safety. 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. ![]() ![]() It provides important information for the calculation of the needs for rails, sleepers, sand and stone for the construction of railways. 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.Įxtenuation Length of Trunk Lines refers to the sum of the first, the second, the third lines and other constructed length of the trunk railways, excluding the extenuation length of the station lines, lines under the jurisdiction of depots, sidings and lines for special purpose. 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. 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).
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