Astra Imperio

Astra Imperio is a tram produced by the Romanian company Astra Vagoane Călători in Arad. It is a 100% low-floor, designed in partnership with Siemens.[1][2] Imperio's design is based on the Avenio platform using electronic and traction equipment supplied by Siemens Mobility.[3][4] It is also available with local electronic and traction equipment supplied by ICPE-SAERP, using IVF 260FR inverters, along with SATREC and MBB31 control units; this variant, called Autentic, uses VEM DKABZ 0310-4 motors instead.[5]

Astra Imperio/Autentic
Imperio tram in Arad
Manufacturer	Astra Vagoane Călători
Assembly	Arad, Romania
Constructed	2011—present
Capacity	45 (Seated) 165 (Standing)
Specifications
Train length	27,000 mm (89 ft)
Width	2,400 mm (7.9 ft)
Height	3,500 mm (11.5 ft)
Floor height	350 mm (1.15 ft)
Low-floor	100%
Entry	320 mm (1.05 ft)
Doors	4
Articulated sections	3
Maximum speed	70 km/h
Weight	37,000 kg (82,000 lb)
Power output	600 kW (4 x 150 kW); 480 kW (4 x 120 kW) or 400 kW (4 x 100 kW)
Electric system(s)	600 V / 750 V DC
Track gauge	1,435 mm (4 ft 8+1⁄2 in) 1,000 mm (3 ft 3+3⁄8 in)
Notes/references
Specifications are for the three-section variant

The tram can be configured as a two to six-section vehicle, each section having a length of 9 m (30 ft), with a powered or unpowered bogie, depending on each operator's needs.[6] The first deliveries started in October 2014 for the Arad local transport company.[7]

The newest and biggest tram yet to be built by Astra Vagoane Calatori is the Astra Imperio Metropolitan. These trams were ordered by the Bucharest City Hall administration on behalf of the Bucharest Transport Society (STB for short), in an effort to make travel by tram more effective, attractive and comfortable to the citizens of the capital city. 100 are ordered and as of April 2023, 29 of them have arrived and are operating on 2 of Bucharest's busiest tram lines (41,25). The trams are currently served by two depots (Militari, Alexandria).