The Bombardier Omneo is a double-deck electric multiple units (EMU). It features a modular design approach, allowing the trainset to be readily adapted for suburban, regional and intercity traffic. According to Bombardier, it is the world's first double-deck EMU to be articulated. Each trainset comprises both single level and double level cars; propulsion equipment, such as the braking resistors and electrical transformers, are installed on the roofs of the single level cars; the double level cars are dedicated to passenger seating alone. The Omneo typically comprises between six and ten individual cars in each trainset, giving a total length of between and and a width of and for twin and single level cars respectively. Dependent upon both length and seating configuration, a trainset can have a maximum passenger capacity of up to 1,380 people, being able to seat 780 of these. Individual cars of a trainset can be exchanged to change the ratio of double-deck to single-deck cars as to better suit a particular service.
