A tram is a urban rail transit in which vehicles, whether individual railcars or multiple-unit trains, run on tramway tracks on urban public streets; some include segments on segregated right-of-way. The tramlines or tram networks operated as public transport are called tramways or simply trams/streetcars. Because of their close similarities, trams are commonly included in the wider term light rail, which also includes systems separated from other traffic.
A trolleybus is an electric bus that draws power from dual overhead wires using spring-loaded trolley poles. Two wires, and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole. They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600-volt direct current, but there are exceptions.
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, electric multiple units, trolleybuses or trams. The generic term used by the International Union of Railways for the technology is overhead line. It is known variously as overhead catenary, overhead contact line (OCL), overhead contact system (OCS), overhead equipment (OHE), overhead line equipment, overhead lines (OHL), overhead wiring (OHW), traction wire, and trolley wire.
A third rail, also known as a live rail, electric rail or conductor rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track. It is used typically in a mass transit or rapid transit system, which has alignments in its own corridors, fully or almost fully segregated from the outside environment. Third-rail systems are usually supplied from direct current electricity.
Charles Joseph Van Depoele was a Belgian-American electrical engineer, inventor, and pioneer in electric railway technology, including the first trolley pole.
A pantograph is an apparatus mounted on the roof of an electric train, tram or electric bus to collect power through contact with an overhead line. The term stems from the resemblance of some styles to the mechanical pantographs used for copying handwriting and drawings.
Conduit current collection is an obsolete system that was used by some electric tramways to pass current to streetcars via a "conduit", a small tunnel under the roadway. Modern systems fall under the term ground-level power supply.
The Toronto streetcar system is a network of eleven streetcar routes in Toronto, Ontario, Canada, operated by the Toronto Transit Commission (TTC). It is the third busiest light-rail system in North America. The network is concentrated primarily in Downtown Toronto and in proximity to the city's waterfront. Much of the streetcar route network dates from the second half of the 19th century. Three streetcar routes operate in their own right-of-way, one in a partial right-of-way, and six operate on street trackage shared with vehicular traffic with streetcars stopping on demand at frequent stops like buses. Since 2019, the network has used low-floor streetcars, making it fully accessible.
A bow collector is one of the three main devices used on tramcars to transfer electric current from the wires above to the tram below. While once very common in continental Europe, it was replaced by the pantograph or the trolley pole, itself often later replaced by the pantograph.
Guided Light Transit was the name of guided bus technology and associated infrastructure manufactured by Bombardier Transportation. Two GLT prototypes were designed and tested from 1987 onwards by BN in the region of Rochefort in Belgium. It was eventully installed in two French cities: Nancy and Caen. The Caen system was closed in 2017 and replaced by conventional trams, while the Nancy system was closed in March 2023 and is to be replaced by trolleybuses.
The Saint-Étienne tramway is a tram system in the city of Saint-Étienne in the Rhône-Alpes (France) that has functioned continuously since its opening in 1881. The first tramway line was steam-operated and was opened by the Chemins de Fer à Voie étroite de Saint-Étienne (CFVE) on 4 December 1881, stretching for 5.5 km between La Terrasse and Bellevue. The CFVE took over the Compagnie des Tramways Électriques de Saint-Étienne lines and discontinued the use of steam in 1912.
A trolleytruck is a trolleybus-like vehicle used for carrying cargo instead of passengers. A trolleytruck is usually a type of electric truck powered by two overhead wires, from which it draws electricity using two trolley poles. Two current collectors are required in order to supply and return current, because the return current cannot pass to the ground since trolleytrucks use tires that are insulators. Lower powered trucks, such as might be seen on the streets of a city, tend to use trolley poles for current collection. Higher powered trucks, such as those used for large construction or mining projects, may exceed the power capacity of trolley poles and have to use pantographs instead. Trolleytrucks have been used in various places around the world and are still in use in cities in Russia and Ukraine, as well as at mines in North America and Africa. Because they draw power from the mains, trolleytrucks can use renewable energy sources – modern trolleytrucks systems are under test in Sweden and Germany along highways using diesel–electric hybrids to reduce emissions.
The stud contact system is an obsolete ground-level power supply system for electric trams. The studs were cylinders with their tops flush with the road surface, and connected to an electrical cable underground. The studs contained a switch mechanism that made an electrical connection with the top of the stud when a car with a strong magnet at its underside passed over it, before automatically disconnencting. Electrical current was collected from the studs by a "skate" or "ski collector" under the tramcar.
A current collector is a device used in trolleybuses, trams, electric locomotives and EMUs to carry electric power (current) from overhead lines, electric third rails, or ground-level power supplies to the electrical equipment of the vehicles. Those for overhead wires are roof-mounted devices, those for rails are mounted on the bogies.
A rubber-tyred tram is a development of the guided bus in which a vehicle is guided by a fixed rail in the road surface and draws current from overhead electric wires.
The Flexity Outlook is the latest model of streetcar in the rolling stock of the Toronto streetcar system owned by the Toronto Transit Commission (TTC). Based on the Bombardier Flexity, they were first ordered in 2009 and were built by Bombardier Transportation in Thunder Bay and Kingston, Ontario, with specific modifications for Toronto, such as unidirectional operation and the ability to operate on the unique broad Toronto gauge.
The Roncesvalles Carhouse is a storage and maintenance facility for the streetcar network of the Toronto Transit Commission. Located at the northwest corner of the Queensway and Roncesvalles Avenue in Toronto, Ontario, west of its downtown core, it is the oldest of the TTC's three active carhouses. The carhouse serves vehicles on routes 501 Queen, 504 King, 505 Dundas, 506 Carlton, 511 Bathurst, and 512 St. Clair.
Stalybridge, Hyde, Mossley & Dukinfield Tramways & Electricity Board (SHMD) was a public transport and electricity supply organisation formed by Act of the British Parliament in August 1901. It was a joint venture between the borough councils of Stalybridge, Hyde, Mossley and Dukinfield. The system was officially opened on 21 May 1904.
The Cantono Frigerio system was an Italian electric power supply for trackless trolleybuses with two wires about 20 inches (510 mm) apart being contacted by a four-wheeled collector on a single trolley pole. In English publications it was often described as Filovia system although the Italian term filovia means literally wire way, i.e. a trolleybus line or a trolleybus system.
