A narrow-gauge railway is a railway with a track gauge narrower than standard 1,435 mm. Most narrow-gauge railways are between 600 mm and 1,067 mm.
A broad-gauge railway is a railway with a track gauge broader than the 1,435 mm used by standard-gauge railways.
In rail transport, track gauge is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many different track gauges exist worldwide, gauge differences often present a barrier to wider operation on railway networks.
A loading gauge is a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads. Their purpose is to ensure that rail vehicles can pass safely through tunnels and under bridges, and keep clear of platforms, trackside buildings and structures. Classification systems vary between different countries, and gauges may vary across a network, even if the track gauge is uniform.
In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway lines is the number of rails in place. However, it is sometimes necessary for track to carry railway vehicles with wheels matched to two different gauges. Such track is described as dual gauge – achieved either by addition of a third rail, if it will fit, or by two additional rails. Dual-gauge tracks are more expensive to configure with signals and sidings, and to maintain, than two separate single-gauge tracks. It is therefore usual to build dual-gauge or other multi-gauge tracks only when necessitated by lack of space or when tracks of two different gauges meet in marshalling yards or passenger stations. Dual-gauge tracks are by far the most common configuration, but triple-gauge tracks have been built in some situations.
The Cincinnati, Lebanon and Northern Railway (CL&N) was a local passenger and freight-carrying railroad in the southwestern part of the U.S. state of Ohio, connecting Cincinnati to Dayton via Lebanon. It was built in the late 19th century to give the town of Lebanon and Warren County better transportation facilities. The railroad was locally known as the "Highland Route", since it followed the ridge between the Little and Great Miami rivers, and was the only line not affected by floods such as the Great Dayton Flood of 1913.
With railways, a break of gauge occurs where a line of one track gauge meets a line of a different gauge. Trains and rolling stock generally cannot run through without some form of conversion between gauges, leading to passengers having to change trains and freight requiring transloading or transshipping; this can add delays, costs, and inconvenience to travel on such a route.
Gauntlet track or interlaced track is an arrangement in which railway tracks run parallel on a single track bed and are interlaced in such a way that only one pair of rails can be used at any time. Since this requires only slightly more width than a single track, all rails can be carried on the same crossties/sleepers. Trains run on the discrete pair of rails appropriate to their direction, track gauge or loading gauge.
A double-track railway usually involves running one track in each direction, compared to a single-track railway where trains in both directions share the same track.
The Finnish railway network consists of a total track length of 9,216 km (5,727 mi). The railways are built with a broad 1,524 mm track gauge, of which 3,249 km (2,019 mi) is electrified. Passenger trains are operated by the state-owned enterprise VR that runs services on 7,225 km (4,489 mi) of track. These services cover all major cities and many rural areas, though the coverage is less than the coverage provided by the bus services. Most passenger train services originate or terminate at Helsinki Central railway station, and a large proportion of the passenger rail network radiates out of Helsinki. VR also operates freight services. Maintenance and construction of the railway network itself is the responsibility of the Finnish Rail Administration, which is a part of the Finnish Transport Agency. The network consists of six areal centres, that manage the use and maintenance of the routes in co-operation. Cargo yards and large stations may have their own signalling systems.
Rail transport in Japan is a major means of passenger transport, especially for mass and high-speed travel between major cities and for commuter transport in urban areas. It is used relatively little for freight transport, accounting for just 0.84% of goods movement. The privatised network is highly efficient, requiring few subsidies and running with extreme punctuality, though since privatisation several unprofitable but socially valuable lines have been closed by private operators.
The Porthmadog cross town link is a section of the 1 ft 11+1⁄2 in narrow gauge Welsh Highland Railway, specifically built to link with the Ffestiniog Railway in Porthmadog, and runs along partly what was called the Junction Railway, previously existing as part of the original Welsh Highland Railway. This had been removed some time after that railway closed in 1936.
Railways with a railway track gauge of 5 ft first appeared in the United Kingdom and the United States. This gauge became commonly known as "Russian gauge", because the government of the Russian Empire chose it in 1843. Former areas and states of the Empire have inherited this standard. However in 1970, Soviet Railways re-defined the gauge as 1,520 mm.
The rail network in Queensland, Australia, was the first in the world to adopt 1,067 mm narrow gauge for a main line, and now the second largest narrow gauge network in the world, consists of:
Rail transport in Australia involves a number of narrow-gauge railways. In some states they formed the core statewide network, but in the others they were either a few government branch lines, or privately owned and operated branch lines, often for mining, logging or industrial use.
Rail transport in the Netherlands uses a dense railway network which connects nearly all major towns and cities. There are as many train stations as there are municipalities in the Netherlands. The network totals 3,223 route km (2,003 mi) on 6,830 kilometres (4,240 mi) of track; a line may run both ways, or two lines may run on major routes. Three-quarters of the lines have been electrified.
The Railway to Beersheba is a railroad line that runs from central Israel to the Zin Factories in southern Israel, with a spur to the Be'er Sheva Center Railway Station and branch lines to Ramat Hovav, the Arad phosphate mines and factories in Tzefa, and a connection to the Ashkelon–Beersheba railway. It is part of the main line of Israel Railways, of which the northern starting point of the line designated as the "line to Beersheba" is usually indicated as beginning at Na'an junction, where the railway splits to Beersheba and Jerusalem. Because the line is not limited to Beersheba, it is known in Israel as Mesilat HaDarom.
Wigan Corporation Tramways operated a tramway service in Wigan, England, between 1901 and 1931. The first tramway service in the town was run by the Wigan Tramways Company, whose horse trams began carrying passengers in 1880. They began replacing horses with steam tram locomotives from 1882, but the company failed in 1890 when a Receiver was appointed to manage it. The Wigan & District Tramways Company took over the system in 1893 and ran it until 1902. Meanwhile, Wigan Corporation were planning their own tramway system, obtaining an authorising Act of Parliament in 1893, and a second one in 1898. This enabled them to build electric tramways, and in 1902, they took over the lines of the Wigan & District Tramways Company.
At the peak of Britain’s first-generation tramways, it was possible to travel by tram all the way from Pier Head at Liverpool to the Pennines in Rochdale by tram.
Trams in Linz is a network of tramways forming the backbone of the urban public transport system in Linz, which is the capital city of the federal state of Upper Austria in Austria.
Europe inherited a diversity of rail gauges. Extensive narrow-gauge railway networks exist in Spain, Central Europe and Southeastern Europe.
