GA = Generale Abonnement is an annual season ticket for all public transport in CH apart from some mountain lines (which generally offer a 25 or 50% reduction instead). A sort of 365 day version of the Swisscard. Germany has something similar, the Bahncard 100. Costs CHF 3860 = about £3000 per annum. There's even a version for dogs available. It's been going since 1898 and as much as about 5% of the population have one. There is an 'impersonal' version also which some communes buy for their residents to use, you sign it out for the day when you need it. Unimaginable to the British, I think...