Delays are expected on the M1 southbound between Newport Pagnell services and junction 14 after a crash.
Emergency services were called at 8.02am this morning to reports of a crash.
Firefighters made the scene safe and assisted paramedics following the collision involving three lorries and a car.
Three fire crews and an officer attended the scene.
One man was injured in the collision - Highways England have told commuters to expect delays of up to an hour and a half.