There was a major backup on Highway 401 Friday afternoon in the westbound lanes through Kitchener and Cambridge.
The Ministry of Transportation said it was due to a collision at Fountain Street.
Traffic was tied up from Homer Watson Boulevard in Kitchener to Franklin Boulevard in Cambridge.
According to the MTO, the collision cleared just after 2 p.m.
CTV News has reached out to Ontario Provincial Police for more details on the crash.