It looks to me as if the Swiss National Route 3 – full details are here – segways perfectly with the Italian National Route 3; La Via dei Pellegrini. What joined up thinking! This sign (take your pick of the language) is the one to follow in Switzerland (but will it take me round the houses like they do in the UK?). And while I’m at it, here is the link to the National Luxembourg Cycle Network map and a link to the French National Cycle Routes website. Thanks to the CTC Eurovelo 5 forum for these links.