For three nights they have had checks at E4 at Nyköping, E18 at Västerås and E20 at Strängnäs. During the inspections, the trucks' tachographs were examined, among other things. By tampering with the vehicle's tachograph, you can drive both faster and drive more hours without rest than the law allows.

- My view is that it is not the drivers who do this manipulation. These are very advanced things that the company has paid for, says Björn Thunblad, interim manager.

- You do not think about this driver who is allowed to drive too much without rest and expose himself and others to high danger, but only to make money, he continues.

Controlled over 70 trucks

During the course of the week, over 70 heavy trucks were checked and most vehicles had some kind of deficiency. The dozen tachographs were either manipulated or had some other inaccuracy.

- There are also cheats in cases where you do not think it should happen, you are actually a little surprised, says Björn Thunblad, the chief of staff.