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Germany, Austria and Switzerland operate the largest interconnected 15 kV 16.7 Hz system, which has central generation, a special transmission network, central and decentral converter plants.

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This is a list of automated people mover systems located at airport complexes around the world. These systems are used to transport people from one location within an airport to another. Many different types of people movers are used at airports, including automated guideway transit, monorail, and maglev.

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The list of automated train systems is ordered in descending order of the degree of automation. It uses the Grade of Automation classifications specified by the standard IEC 62290‐1. These are explained diagrammatically by the UITP.

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A monorail is a railway system in which the track consists of a single elevated rail, beam or track with the trains either supported or suspended. The term is also used to describe the beam of the system, or the vehicles traveling on such a beam or track. Many monorail systems run through crowded areas that would otherwise require the construction of expensive underground lines or have the disadvantages of surface lines. Aside from mass transit and people mover systems, a large number of smaller monorails have been built in amusement parks and at zoos.

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A mountain railway is a railway that operates in a mountainous region. It may operate through the mountains by following mountain valleys and tunneling beneath mountain passes, or it may climb a mountain to provide transport to and from the summit.

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This is a list of North American rapid transit systems by ridership. These heavy rail or rapid transit systems are also known as metro or subway systems. This list of systems in North America does not include light rail, even when they are integrated with heavy rail. Daily and annual ridership figures are based on "average weekday unlinked passenger trips", unless otherwise indicated. For metro systems in the United States and Canada, the annual ridership figures for 2018 and average weekday ridership figures for the Fourth Quarter (Q4) of 2018 come from the American Public Transportation Association's (APTA) ridership reports statistics, unless otherwise noted. Ridership figures for Mexico come from Banco de Información Económica's INEGI reports for the year 2018.

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A rack railway is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more cog wheels or pinions that mesh with this rack rail. This allows the trains to operate on steep grades above 10%, which is the maximum for friction-based rail. Most rack railways are mountain railways, although a few are transit railways or tramways built to overcome a steep gradient in an urban environment.

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This is a list of the world's railway operating companies listed alphabetically by continent and country. This list includes companies operating both now and in the past.

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The world record for a conventional wheeled passenger train is held by France's TGV, set in 2007 when it reached 574.8 km/h (357.2 mph) on a 140 km section of track.

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This list of metro systems includes electrified rapid transit train systems worldwide. In some parts of the world, metro systems are referred to as subways, U-Bahn or undergrounds. As of December 2017, 182 cities in 56 countries around the world host the approximately 180 metro systems that are listed here.

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This is a list of railway roundhouses. A roundhouse is a building used for servicing locomotives, large, circular or semicircular structures often located adjacent to or surrounding turntables.

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This is a list of notable railway track gauge conversions, railway lines where the distance between a set of tracks is broadened or narrowed. Conversions to broader gauge are generally to accommodate heavier loads or for wider cars, while conversions to narrower gauge tend to be for compatibility with other lines on a rail network. This list also contains instances of lines already prepared for conversion and those which are planned to be converted.

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This list presents an overview of railway track gauges by size. A gauge is measured between the inner faces of the rails.

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A train song is a song referencing passenger or freight railroads. Trains have been a theme in both traditional and popular music since the first half of the 19th century and over the years have appeared in all major musical genres, including folk, blues, country, rock, jazz, world, classical and avant-garde. While the prominence of railroads in the United States has faded in recent decades, the train endures as a common image in popular song.

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The following are current and former trains in the Netherlands.

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The following is a list of tram/streetcar, or light rail systems with their track length, track gauge, electrification system.

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This is a list of countries by rail usage. Rail usage may be measured in tonne-kilometres (tkm) or passenger-kilometres (pkm) travelled for freight and passenger transport respectively. This is the number of tonnes or passengers multiplied by the average distance of their journeys in kilometres.