Nyon railway station will be a completely non-smoking railway station beginning the 1st February 2018. Smoking will be banned on the platform, in station buildings, and in the underpass below the station.
This non-smoking ban is part of a new initiative by CFF, however, it is a trial only at this stage to last for several months (unspecified length at the moment). The other stations are Basel CFF, Bellinzona, Coire, Neuchâtel and Zurich Stadelhofen.
This initiative by CFF is to improve the cleanliness of the station, for the benefit of passengers and to improve the overall quality of travel.