It is unclear how the accident, which occurred at 6.15 p.m., happened.
A driver and six passengers were traveling in the bus, all are unharmed.
In one of the cars, a person complains of neck pain.
- We are in the process of cutting the car open to be able to make a safe withdrawal, says Stefan Fröbom at 18.45.
Traffic is expected to be at a standstill until 7:30 p.m.