Taking a bus is a convenient way to get around in Tartu. Buy a one-hour ticket from the bus driver for €2, or, if you're going to be riding frequently, go to a kiosk and pay €2 for an electronic pass card or sticker, which you then load with credit. Be sure to validate your pass once on board or risk a hefty fine if an inspector catches you. The cards automatically give you the cheapest rate, be it a 1-hour ticket (€1.50), a 1-day ticket (€3.75) or a 5-day ticket (€12.75). More info about tickets and routes as well as time tables can be found here.