Are the SBB Junior Card and the SBB Children’s Co-Travelcard valid? Yes, these cards for children aged 6 to 16 are valid on all our lines. Related articles From what age do children have to pay? Are the Half-Fare travelcard and GA (general travelcard) valid? I have a Swiss Travel Pass / General Abonnement, do I need to buy a ticket? Are there any reduced rates for seniors or students? Can I buy my ticket on site?