Electrical double-decker multiple unit SBB IR-KISS
In April 2021, SBB acquired a further 60 intercity double decker multiple units (RABe 512) from Stadler, strengthening its existing fleet with an established vehicle type.

Forty-one of the vehicles will replace the old fleet, bring them in line with the requirements set out in the Disability Discrimination Act (DDA) for long-distance travel. Among other things, the changes will see barrier-free entrances on the trains to make getting on and off easier, especially for people with reduced mobility. Nineteen of the vehicles will be used in regional traffic, around Zurich and western Switzerland. This will reduce bottlenecks, allowing offer expansion and create more comfort for the passengers. The first vehicles will be introduced with the timetable for 2024. Currently, SBB operates 93 IR- resp. RE-KISS vehicles (RABe 511), which the IR-KISS is based on. The IR-KISS is an electrical multiple unit, which is 152 metres’ long and has 466 seats. The interior meets long-distance traffic standards and offers a 2/1- seating arrangement in the first-class. Sockets, easily-accessible bicycle areas, multi-functional compartments with space for push-chairs, five toilets, as well as a modern information system, all feature throughout the train. Stadler refers to this IR double-decker as the KISS, which is a German acronym for comfortable innovative speedy express train («komfortabler innovativer spurtstarker S-Bahn-Zug», KISS).
Technical features
Technology
Interoperable vehicle according to TSI
ETCS- train protection system «Guardia» level 3
Air suspended engine- and trailer bogie
Multiple steering up to four multiple units
Comfort
Interior meets long-distance standards, eg 2/1- seating in the first-class, sockets at every seatasy accessible multi-functional areas for the transport of bicycles, winter sport devices, prams or the like
Multi-functional compartments with tip-up seats for travelling with prams
Five toilets with closed WC-systems per vehicle, one of them is wheelchair-accessible according to TSI-PRM
Modern passenger information system
Barrier-free entrances (low-floor)
Generous entrance areas to enable passengers to get on and off easily
Mobile communication transparent panes for improved mobile phone reception
Personnel
Ergonomic designed driver desk
Conductor cupboard with sockets and storage possibilities for personal items
Improved conditions for cleaning staff in areas of high dirt collection
Reliability / Availability / Maintainability / Safety
Redundant drive unit, consisting of four power trains with water-cooled IGBT- power converter
Vehicle process control technique with train bus and diagnose computer (CAN-open BUS)