There are good communications in Karlshamn.

Bus traffic in the region of Blekinge, Kalmar and Växjö. Timetables are available at the Tourist Office.

Blekingetrafiken's website, phone +46 (0)455-569 00

Sweden Rock Festival Transfer buses
You can purchase the bus tickets either by the train station in Sölvesborg, on any shuttle bus or at the bus stop by the festival area. You may use either cash or credit card by the train station and by the festival area, but if you are buying the ticket on the bus, only cash is accepted.
You can also buy the bus tickets in advance at  www.swebus.se from May 11.
Download the timetable
for transfer buses to Sweden Rock Festival