The Inekon 01 Trio is an articulated low-floor tram manufactured by company Inekon Trams. The company is a member of Inekon group. The tram is conceptually based on the à  koda 03 T developed by à  koda Transportation and Inekon Group.
The joint venture between à  koda and Inekon was dissolved in 2001, after which à  koda continued to sell the 03 T, while Inekon formed a new partnership with DPO (Dopravnàpodnik Ostrava, the city transport company of Ostrava), known as DPO Inekon, and in 2002 began selling a nearly identical version of the Astra, under the name Trio. The Trio is a three-carbody-section, four-axle (two-bogie) design, in which the low-floor area represents 50% of the entire vehicle floor area. The overall length is . The Inekon 01 Trio is a single-ended (uni-directional) version, buyers of which have included (as of 2008) the transport agencies in Olomouc and Ostrava. The first car was built in 2002, for Ostrava's tram system (DPO).