A truck transporting Madonna's tour sound kit has tipped over on a western Swedish motorway.

The singer's kit truck flipped on its side and created a rush hour traffic jam, generating delays on both directions south of Gothenburg.

Sound system boxes could be seen piled up inside the vehicle while it lay on its side and emergency crews cleared the area.

The popstar is set to perform in Gothenburg on Wednesday, and it is still unclear if the accident will affect the concert.

The world tour kicked off on May 31 in Israel.