Bucur LF is a series of low-floor tram vehicles produced by the URAC section of the STB (formerly RATB) transit company of Bucharest, Romania. The tram is configured as a three-section 65% low floor vehicle, with two powered and one unpowered bogies. The vehicle has four double-leaf 1,305 mm (4.281 ft) wide doors, and at the outer ends there are two other single leaf 650 mm (2.13 ft) wide doors.