Citadis
Citadis is a family of low-floor trams and light rail vehicles built by Alstom., over 8,000 Citadis trams have been ordered, with operations in over 140 cities on all six inhabited continents. An evolution of Alstom's earlier TFS vehicle, most Citadis vehicles are made in Alstom's factories in La Rochelle and Valenciennes, France, and in Barcelona, Spain, and Annaba, Algeria.
Citadis types
The Citadis family includes both partial and fully low-floor trams and LRVs. Several versions are of the multi-articulated design, with alternating wheeled and suspended sections. These are built with three, five, seven, and nine sections. The whole line-up includes the following standard variants:Urban tramway vehicles
- Citadis X00
- *Citadis 100 – three section, 70% low floor, originally designed and manufactured by Konstal in Chorzów for the Polish market
- Citadis X01
- * Citadis 301 – three section, 70% low floor
- **Citadis 301 CIS – 100% low floor version with IPOMOS bogies on gauge. Also designated 71-801 according to the Russian unified system of rolling stock classification.
- *Citadis 401 – five sections, 70% low floor
- Citadis X02
- * Citadis 202 – three section, 100% low floor
- * Citadis 302 – five sections, 100% low floor
- * Citadis 402 – seven sections, 100% low floor
- * Citadis 502 – nine sections, 100% low floor
- Citadis X03
- * Citadis 403 – seven sections, 100% low floor
- Citadis X04
- * Citadis 304 – 100% low floor, next generation design for Central and Eastern Europe
- Citadis X05
- * Citadis 205 – three sections, 100% low floor
- * Citadis 305 – five sections, 100% low floor
- * Citadis 405 – seven sections, 100% low floor
- * Citadis SX05 – 70%/100% low floor + high floor
Light-rail transit vehicles
- Regio-Citadis – three sections, 70% low floor LRV
- Citadis Dualis – four or five sections, 100% low-floor LRV
- Citadis Spirit – three or four sections, 100% low floor LRV designed for the North American market
Power supply
The most popular solution is Alstom's proprietary ground-level power supply, consisting of a type of third rail which is only powered while it is completely covered by a tram so that there is no risk of a person or animal coming into contact with a live rail. On the networks in France and in Sydney, the trams switch to conventional overhead wires in outer areas, but the Dubai vehicles are the first to employ APS for its entire passenger length.
Another option is to use on-board batteries to store electrical power, allowing brief periods of catenary-free operation without the need to install special infrastructure. The Citadis trams in Nice operate off a set of nickel metallic hydride batteries in two large open spaces where overhead wires would be an eyesore. This has since been superseded by a supercapacitor-based energy storage system which is in use in Rio de Janeiro, Kaohsiung, and along a new line in Nice. The Regio-Citadis can also be built as a dual-voltage or electro-diesel vehicle with various configurations.
Ordered Citadis trams
Africa
Asia
North America
The main article provides vehicle and order descriptions.| Country | City | Image | Type | Fleet numbers | Quantity | Year | Length | Width | Comments |
| Canada | Ottawa | Citadis Spirit | 1101–1134 | 34 | 2018 | Four-module vehicles | |||
| Canada | Toronto | Citadis Spirit | 6500–6517 | 18 | 2019-2022 | Four-module vehicles. Ordered with the Hurontario LRT cars as part of a group order | |||
| Canada | Mississauga/Brampton | Citadis Spirit | 0 | 2020-2022 | N/A | Four-module vehicles. Ordered with Toronto as part of a group order | |||
| Canada | Quebec City | Citadis Spirit | 0 | 2023 | Four-module vehicles | ||||
| United States | Philadelphia | 305 | 0 | 2026-2030 | Ordered 2023; production expected to start in 2026 |