...With more than 35 operators across 9 countries, we are just starting to develop our community of users as S3 Passenger is the public transport industry’s system of choice. Follow in the footsteps of leading operators such as SNCF, SJ, Eurostar, VIA Rail and choose S3 Passenger. Self-service. Provide operators' passengers easy and efficient self-services to create and change bookings. Global leading SaaS reservation, inventory, ticketing, distribution product.