Highway 401 is open again, after a seven-vehicle collision in the collector lanes of eastbound Highway 401 at Avenue Road caused a pileup early Thursday morning.

Ontario Provincial Police later said a blue Mack dump drunk collided with six other vehicles at around 8:49 a.m. Four people were taken to hospital, all with non life-threatening injuries.

All lanes on the eastbound 401 collectors at Avenue Road have now opened to traffic.

Bruce Reynolds of Port McNicoll, Ont. has been charged with careless driving.