Two men were hurt, one critically, after two vehicles collided on a busy road in south London on Thursday.
Emergency crews were called to the crash on Colonel Talbot Road, south of Highway 401, around 7 a.m.
The drivers of both vehicles were taken to hospital - one with life-threatening injuries, the other with minor injuries.
Colonel Talbot was expected to be closed between Orr Drive and the 401 for several hours while police investigated. The closure caused major backups as the road is a London-St. Thomas connector favoured by commuters.
Drivers were asked to avoid the area.
