Most lines (with the exceptions of lines T4, T9, T11 Express, and T13 Express) are operated by the Régie Autonome des Transports Parisiens (RATP), which also operates the Paris Métro and most bus services in the Paris immediate area.

[citation needed] In the 1930s, the oil and automobile industry lobbies put pressure on the Paris Police Prefecture to remove tram tracks and make room for cars.

[4] The last of these first generation tram lines inside of Paris, connecting Porte de Saint-Cloud to Porte de Vincennes, was closed in 1937,[5] and the last line in the entire Paris agglomeration, running between Le Raincy and Montfermeil, ended its service on 14 August 1938.

The funicular that operated in Belleville from 1891 to 1924 is sometimes erroneously thought of as a tramway, but was actually a cable car system.

Line T1 currently connects Asnières-sur-Seine and Gennevilliers to Noisy-le-Sec, running almost parallel to the Paris city's northern limit.

Line T2 (Trans Val-de-Seine) connects the bridge of Bezons (Pont de Bezons) to the Porte de Versailles Paris Métro station (near Paris's main exhibit grounds) via La Défense and Issy-les-Moulineaux business districts.

It is divided into two sections, called T3a and T3b, separated at the Porte de Vincennes stop in order not to cut the road traffic there, despite rail and electrical infrastructure being present and operational.

Tramway T5[14] is a Translohr tram-on-tyres[15] running along a mainly segregated "track" on the busy Route Nationale 1 (similar to the systems in Nancy or Caen) where it replaces the former bus lines 168 and 268.

Formerly known as Tram'y due to its opening-day Y-shape (while T4 got its Y-shape after its initial opening), this 8.46-kilometre (5.26 mi) tram line goes from the Saint-Denis–Porte de Paris Métro station to Épinay-sur-Seine — Orgemont, with a branch to the university campus of Villetaneuse, where it connects to the more recent T11 Express Line.

An extension is also planned south, to Paris itself, at the Rosa Parks RER station.

[18] T9 is a tram line that runs between the Porte de Choisy Paris Métro station and the centre of Orly with a length of 10.3 km (6.4 mi) and 19 stops.

T10 is a tram line from Clamart to La Croix de Berny station in Antony in the southwestern suburbs of Paris.

An extension to Achères-Ville RER station is at the planning stage, with Île-de-France Mobilités setting 2028 as the target opening date.

The RATP however considers it to be part of the T network, and is currently drawing plans for more BRT lines.