Most commuter ( or suburban ) trains are built to main line rail standards, differing from light rail or rapid transit ( metro rail ) systems by:

Compared to rapid transit ( or metro rail ), commuter / suburban rail has lower frequency, following a schedule rather than fixed intervals, and fewer stations spaced further apart.

To some US observers these networks may appear to operate as commuter / metro hybrids, however, they are simply the result of full utilisation of the available track capacity in the core of the suburban rail network, this being fed from multiple feeder lines.

* S-Bahn, the combined city center and suburban railway system metro in Austria, Germany, Switzerland and Denmark

In the 1950s, suburban development entered a new phase with the introduction of the Stockholm metro.

These sections of railway are extensions of suburban main line services and are not a completely segregated true metro system.

In some cities such as Miami and San Francisco, the main city is much smaller than the surrounding suburban areas, leaving the city proper with a small portion of the metro area's population and land area.

Because of the fluidity of the term " metropolitan statistical area ," the term used colloquially is more often " metro service area ," " metro area ," or " MSA " taken to include not only a city, but also surrounding suburban, exurban and sometimes rural areas, all which it is presumed to influence.

As late as 1960, half of the residents of Mesa made a living with agriculture, but this has declined substantially as Mesa's suburban growth continued on track with the rest of the Phoenix metro area.

Seen as the sister city of Shakopee, Prior Lake was incorporated as a village in 1891, Prior Lake is one of the oldest southern metro cities to have been absorbed by suburban growth.

Perhaps alone among world metro systems, tickets are not sold by the transport company itself, but by post offices and privately-run shops and newsagents '; however, the ticket system covers all Warsaw public transport, including the Metro, buses, trams and some suburban trains.

Tehran is served by a system of metro of 3 urban lines ( 1, 2, 4 ) and one suburban line ( 5 ) serving Karaj and Tehran western suburbs.

Park-and-ride car parks are commonly found at metro stations, freeway entrances in suburban areas, and at the edge of smaller cities.

The suburban railway lines of Naples are all integrated into the subterran metro network.

Largest cities has power suburban networks and some cities has urban lines ( Kita-Osaka Kyūkō Railway, Yamanote Line etc ) that supply the metro systems.

Wealthy suburban communities in northern metro Atlanta that abut the river include: Vinings, Buckhead, Sandy Springs, East Cobb, Roswell, Dunwoody, Peachtree Corners, Johns Creek, and Berkeley Lake.

Cobb Community Transit or CCT is the bus public transit system in Cobb County, Georgia, one of metro Atlanta's three most populous suburban counties.

Gwinnett County Transit or GCT is the bus public transit system in Gwinnett County, Georgia, USA, one of metro Atlanta's three most populous suburban counties.

It can be considered a hybrid system, displaying elements of light rail, heavy underground metro, and longer-distance, higher speed suburban and interurban railway systems.

At present, Ankara's rapid transit system consists of two metro lines, which are called Ankaray and Ankara Metro, and a suburban rail system.

On September 1, 2010, as " almost " metro and its 1st phase, the first line of Belgrade's new urban BG: Voz system, separate from suburban commuter Beovoz system, started its operation.

In 2006, the São Paulo Metro system has started to use a smart card, called " Bilhete Único " ( or " Single Ticket " in English ), allowing a passenger to take up to 4 buses and 1 metro or suburban train within 2 hours paying only R $ 4. 07, 4 buses paying R $ 2. 70 or metro or a suburban train within 3 hours only and pay R $ 4. 07.

Rubber-tyred metro trains use a specialised version of railway bogies.

An international mainline railway the Gulf Railway and a four line metro network is proposed.

National and international passenger trains depart from Lausanne's CFF railway station, which is also the hub of the Réseau Express Vaudois commuter rail system, and a stop on the city's metro.

The planned metro lines within Greater Doha are for, and the planned national railway is for a total distance of.

Spanish transit is marked by a high degree of integration between its long distance railway system and inner-city metro systems, although the historic use of broad gauge has limited integration with its neighbours.

* A metro railway line that would start at St James, continue through to the CBD and onwards to Maroubra.

The metro railway extends along most of Gran Valparaíso and is the second metro system in operation in Chile ( after Santiago ’ s ), and includes an underground section that crosses Viña del Mar ’ s downtown.

Each has a metro station on Rotterdam Metro line D ( Poortugaal station and Rhoon station ), which connects in eastern direction to Rotterdam and to the main railway network at Rotterdam Centraal railway station, and in western direction to Hoogvliet and Spijkenisse.

The city centre near the south of the island is surrounded by satellite towns, parks, reservoirs and industrial estates, which are connected to the centre and each other by a dense network of roads, expressways and metro railway lines dubbed MRT by locals.

A railway platform is a section of pathway, alongside rail tracks at a train station, metro station or tram stop, at which passengers may board or alight from trains or trams.

In the Netherlands, ProRail is a government task organisation that takes care of maintenance and extensions of the national railway network infrastructure ( not the metro or tram ), of allocating rail capacity, and of traffic control.

The lines operated include metro and commuter lines in and around the city of Barcelona, tourist operated mountain railways, and rural railway lines.

A metro station or subway station is a railway station for a rapid transit system, often known by names such as " metro ", " underground " and " subway ".

The metro network and the national rail network share the same gauge ( 1, 435 mm ) and loading gauge but not the same electrification system ( the metro uses 750 V DC whereas the Romanian Railways use 25, 000 V 50 Hz AC ) making it possible for new metro cars to be transported cross country as unpowered railway cars.

The metro can be caught at the Hawthorns railway station.

The Vienna U-Bahn in Austria is also a metro system.

Along with the S-bahns in Berlin, Vienna and Hamburg, the S-train system in Copenhagen is a metro system unlike many other S-bahns.

The Vienna U-Bahn ( an abbreviation of Untergrundbahn, or underground railway ) is a rapid transit ( metro ) system consisting of five lines.

Almost all pre-revolutionary designs were based upon the concept of building an elevated metro system, similar to the Paris or Vienna metros, however, as was later discovered through the experience of operating open ( ground level ) metro lines in St. Petersburg, such schemes would likely have resulted in a poor metro service.

Wiener Linien operate bus and tram ( Straßenbahn ) surface routes, and partly underground, partly overground metro or underground train lines ( Vienna U-Bahn ).

The construction of a metro in Vienna had been preceded by decades of political debate, since the Social Democratic majority in Vienna had initially preferred other modes of transit.