ultra low-floor tram; ultra low-floor LRV
Technical term used in transportation engineering and urban planning. Refers to trams or light rail vehicles with a very low floor for barrier-free boarding.
The introduction of ultra low-floor trams is progressing in this city.
低床電車 is a low-floor tram, while 超低床電車 emphasizes an even lower floor, often with no steps at all.
ライトレール is a broader term for light rail, while 超低床電車 specifically refers to the vehicle type with an ultra-low floor.
Compound of 超 (ultra), 低床 (low-floor), and 電車 (electric train). A modern technical term.