Electric rail car for branch lines, built in 1955 as CFe 4/4 843 by SLM/BBC/MFO/SAAS for the SBB, later BFe 4/4, then BDe 4/4 1643 and based in Winterthur since 1962.
Historic vehicle since 1996, the railcar has room for 40 passengers and a luggage compartment.