Data

Passenger-kilometers by rail

What you should know about this indicator

How is this data described by its producer?

Passengers carried by railway are the number of passengers transported by rail multiplied by kilometers traveled.

Aggregation method:

Median

Statistical concept and methodology:

Methodology: Passenger-kilometers are usually measured on the basis of the rail travel distance between origin and destination multiplied by the number of passengers traveling between each origin and destination. This variable relates to passengers, irrespective of the fare paid and also including free travelling passengers, but excluding members of the train crew.

The number of passengers should be calculated as number of passenger journeys. A journey is the act of moving from one place (origin) to another (destination) using a given transport mode (e.g. railway). A journey may consist of one or several stages depending on whether one has to change transport means (e.g. using more than one train) in order to get from the origin to the destination. In other words, a journey consists either of a single stage or a sequence of stages using the same transport mode (e.g. railway), following each other in such a way that the destination of one stage coincides with the origin of the next.

Journeys should be considered finished when an overnight stay occurs. For practical purposes, journeys can be considered finished when a change in transport mode or transport company occurs.

Passenger-kilometers is the total distance travelled by all the passengers. For instance, one person travelling for 20km contributes for 20 passenger-kilometres; four people, travelling for 20km each, contribute for 80 passenger- kilometers

Statistical concept(s): A passenger kilometer is performed when a passenger is carried for one kilometer. Rail passenger-kilometer (pkm) is a unit of measurement representing the transport of one rail passenger by rail over a distance of one kilometer.

The distance to be taken into consideration should be the distance actually travelled by the passenger on the network. To avoid double counting each country should count only the pkm performed on its territory. If this is not available, then the distance charged or estimated should be used.

Development relevance:

Transport infrastructure - highways, railways, ports and waterways, and airports and air traffic control systems - and the services that flow from it are crucial to the activities of households, producers, and governments. Because performance indicators vary widely by transport mode and focus (whether physical infrastructure or the services flowing from that infrastructure), highly specialized and carefully specified indicators are required to measure a country's transport infrastructure.

The railway transport industry a vital engine of global socio-economic growth. It is of vital importance for economic development, creating direct and indirect employment, supporting tourism and local businesses. Economic growth, technological change, and market liberalization affect road transport throughout the world.

Railways have helped in the industrialization process of a country by easy transportation of coal and raw-materials at a cheaper rate. As railways require huge capital outlay, they may give rise to monopolies and work against public interest at large. Even if controlled and managed by the government, lack of competition sometimes results in inefficiency and high costs. Also, many times it is not economical to operate railways in sparsely settled rural areas. Thus, in many developing countries large rural areas have no railway even today.

Rail transport is a major form of passenger and freight transport in many countries. Passenger trains can involve a variety of functions including long distance travel, daily commuter trips, or local urban transit services. Railways are very popular mode of transportation in Europe, with an integrated network covering virtually the whole continent. In India, China, South Korea and Japan, many millions use trains as regular transport. In North America, freight rail transport is widespread and heavily used in for transporting goods. The western Europe region has the highest railway density in the world and has many individual trains which operate through several countries despite technical and organizational differences in each national network. Australia has a generally sparse network, mostly along its densely populated urban centers.

Limitations and exceptions:

Data for transport sectors are not always internationally comparable. Unlike for demographic statistics, national income accounts, and international trade data, the collection of infrastructure data has not been "internationalized." The data from UIC is based on voluntary reporting by railway companies, and can show drastic increases or decreases for some of the years due to lack of reporting by some of the companies in that country.

Source
International Union of Railways (UIC) and OECD, via World Bank (2026)processed by Our World in Data
Last updated
February 27, 2026
Next expected update
February 2027
Date range
1995–2021
Unit
million passenger-km

Sources and processing

International Union of Railways (UIC) and OECD, via World Bank – World Development Indicators

The World Development Indicators (WDI) database, published by the World Bank, is a comprehensive collection of global development data, providing key economic, social, and environmental statistics. It includes over 1,500 indicators covering more than 200 countries and territories, with data spanning several decades.WDI serves as a vital resource for policymakers, researchers, businesses, and analysts seeking to understand global trends and make data-driven decisions. The database covers a wide range of topics, including economic growth, education, health, poverty, trade, energy, infrastructure, governance, and environmental sustainability.The indicators are sourced from reputable national and international agencies, ensuring high-quality, consistent, and comparable data. Users can access the database through interactive online tools, API services, and downloadable datasets, facilitating detailed analysis and visualization.WDI is also used for tracking progress on the Sustainable Development Goals (SDGs) and other global development initiatives. By providing accessible and reliable statistics, it helps to inform policy discussions and strategies globally.Whether for academic research, policy planning, or economic analysis, the World Development Indicators database is an essential tool for understanding and addressing global development challenges.

Retrieved on
February 27, 2026
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
Railisa Database (UIC), International Union of Railways (UIC), uri: https://uic-stats.uic.org/select/;
OECD Statistics, Organisation for Economic Co-operation and Development (OECD). Indicator IS.RRS.PASG.KM (https://data.worldbank.org/indicator/IS.RRS.PASG.KM). World Development Indicators - World Bank (2026). Accessed on 2026-02-27.

The World Development Indicators (WDI) database, published by the World Bank, is a comprehensive collection of global development data, providing key economic, social, and environmental statistics. It includes over 1,500 indicators covering more than 200 countries and territories, with data spanning several decades.WDI serves as a vital resource for policymakers, researchers, businesses, and analysts seeking to understand global trends and make data-driven decisions. The database covers a wide range of topics, including economic growth, education, health, poverty, trade, energy, infrastructure, governance, and environmental sustainability.The indicators are sourced from reputable national and international agencies, ensuring high-quality, consistent, and comparable data. Users can access the database through interactive online tools, API services, and downloadable datasets, facilitating detailed analysis and visualization.WDI is also used for tracking progress on the Sustainable Development Goals (SDGs) and other global development initiatives. By providing accessible and reliable statistics, it helps to inform policy discussions and strategies globally.Whether for academic research, policy planning, or economic analysis, the World Development Indicators database is an essential tool for understanding and addressing global development challenges.

Retrieved on
February 27, 2026
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
Railisa Database (UIC), International Union of Railways (UIC), uri: https://uic-stats.uic.org/select/;
OECD Statistics, Organisation for Economic Co-operation and Development (OECD). Indicator IS.RRS.PASG.KM (https://data.worldbank.org/indicator/IS.RRS.PASG.KM). World Development Indicators - World Bank (2026). Accessed on 2026-02-27.

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To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: Passenger-kilometers by rail”. Our World in Data (2026). Data adapted from International Union of Railways (UIC) and OECD, via World Bank. Retrieved from https://archive.ourworldindata.org/20260512-185716/grapher/railways-passengers-carried-passenger-km.html [online resource] (archived on May 12, 2026).

How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

International Union of Railways (UIC) and OECD, via World Bank (2026) – processed by Our World in Data

Full citation

International Union of Railways (UIC) and OECD, via World Bank (2026) – processed by Our World in Data. “Passenger-kilometers by rail” [dataset]. International Union of Railways (UIC) and OECD, via World Bank, “World Development Indicators 125” [original data]. Retrieved May 12, 2026 from https://archive.ourworldindata.org/20260512-185716/grapher/railways-passengers-carried-passenger-km.html (archived on May 12, 2026).

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