Series 207001 : Line T3, opened on 15/11/2006, runs for 13 km around the south of the city of Paris, inside the city boundary, following the Boulevards des Marechaux (Victor, Lefebvre, Brune, Jourdan and Kellerman) and then Boulevard Massena between Port d'Italie and Porte d'Ivry. As well as linking a number of Paris' historic gateways (Portes), the line, entirely on reservation, much of which is grassed, links up the outer ends of a number of metro lines. Porte de Versailles, seen above, is one such Metro interchange. The initial batch of 21 2.65 m wide and 43 m long Citadis 402 trams are double endedand will operate only in single unit trains.

Series 207002 : Line T4 is a pioneering line to the extent that it is the first French "Tram-Train" line, where an under-used 8 km long local main-line service has been converted to light-rail technology in an attempt to reduce costs, improve service (and reverse the declining patronage) and assist in the strategic planning aims of improving mobility between some of Paris' north-eastern suburbs. Opened on 18/11/2007, it is still operated by national main-line railway company SNCF, linking the stations at Aulnay and Bondy via revamped stations such as Allee de la Tour Rendez-Vous (above) where level access is afforded to the low-floor Alstom Avanto trams.

Series 207003 : Line T1, first opened in 1992, successfully reintroduced trams to the Paris region and was extended in December 2003 to its current eastern terminus at Noisy-le-Sec. It is predominantly street tramway and links densely populated suburban areas just to the north of paris proper with a high frequency service. With new Citidis 302 cars now on line T2, the 70% low-floor cars of the 200 series have been transferred to work T1, such as 213 at Noisy-le-Sec (above). The 2.9 km extension, with 5 stops, has brought more users to this already heavily patronised line, underlining the success of the decision to return tramways to Paris.