Travel without a valid ticket

When is the ticket purchased in time? Which applies: the departure time in the timetable or the actual departure time of the means of transport? Why is there no grace period of one to two minutes? What about surcharges if the app does not work? Can the control staff be lenient? Who is responsible for processing the recorded incidents?

What can I do if I do not agree to the surcharge for travel without a valid ticket? What is the legal basis for traveling without a valid ticket? What does ‘travel without a valid ticket’ mean? What does ‘travel with a partly valid ticket’ mean?

What surcharges are levied for travel without a valid ticket? What payment deadlines apply for travel without a valid ticket?

Can I pay the bill for a journey without a valid ticket in installments? Can I extend the deadline for paying for travel without a valid ticket? I have received a reminder. It includes a reminder fee of 40 francs. Can BLS charge this? I have received an invoice and believe that I have already paid it. Should I ignore the invoice? Can I have my entry in the debt collection register deleted?