One of the most challenging things in OMSI is selling tickets (after avoiding the collision against AIs lol). To sell tickets, the bus drivers have to understand some points, like:

• Calculations
• Ticket Categories
• Where the different type of tickets are on the ticket printer
• How to give changes
• Different currencies

Calculations

First of all, it is very important that the bus driver must know the basics of mathematics to be able to give the change to the passenger. If you give less change than the expected, the passenger will complain about this and it will decrease your score at the end of the tour. Also, if you give more than the expected, the passengers will complain as well, …