The richness of the invention is great when finding a way to cheat.

- You can drive with a double driver's license or reprogram the tachograph so you can unplug it and drive when it shows that you are resting, says Björn Thunberg.

For three nights, there has been a targeted response to the occupational traffic in the county. Police and car inspectors from Kalmar in the south to Hudiksvall in the north participated.