Man, 45, killed after 3 transport trucks collided along Hwy. 401 in Mississauga

Highway 401 has reopened ahead of Tuesday's evening rush after an investigation into a fatal collision closed a stretch of the roadway in Mississauga for more than four hours

All eastbound lanes reopened after being closed for 4 hours due to an investigation

A 45-year-old man is dead after the tractor trailer he was driving slammed into the back of another transport truck early Tuesday afternoon, OPP says. (Kerry Schmidt/OPP)

Highway 401 has reopened ahead of Tuesday's evening rush after an investigation into a fatal collision closed a stretch of the roadway in Mississauga for more than four hours

The victim, a 45-year-old man from Richmond Hill, Ont., was killed after three transport trucks collided shortly before noon. 

The victim was driving a tractor trailer hauling gravel eastbound on Highway 401, just east of Winston Churchill Boulevard, when he "slammed" into the back of another flatbed truck transporting tent trailers, said Sgt. Kerry Schmidt, a spokesperson for Ontario Provincial Police.

The driver of a transport truck rear-ended this flatbed truck transporting tent trailers. (Kerry Schmidt/OPP)

That truck then collided with a third transport truck, Schmidt explained. Neither driver of those vehicles suffered any injuries in the crash.

But the driver of the rear vehicle was pronounced dead at the scene, said Schmidt. The victim's name has yet to be released. 

All eastbound lanes of Highway 401 from Winston Churchill Boulevard to Missisauga Road reopened around 4:30 p.m.