At least four serious crashes caused traffic chaos and left at least two people in hospital on Thursday morning.
Around 9.55am, one motorist's car was tipped on its side after a crash on Morshead Drive heading east outside the entrance to Duntroon in Campbell.
Emergency services were on the scene and treated a 54-year-old woman for minor injuries.
The crash compounded traffic in the area, which was already slow after a car collided with a cyclist on the Monaro Highway between Fyshwick and Campbell around 8.35am.
Emergency services were called and a 54-year-old man was taken to Canberra Hospital in a stable condition with minor injuries.
Traffic was gridlocked throughout the area, heading from Fyshwick to the city.
The morning peak got off to a poor start shortly before 8am, when there was a two car crash outside the Boating Camping Fishing shop on Scollay Street in Greenway, closing the road completely.
One person was taken to Canberra hospital with minor injuries, according to emergency services.
An eastbound lane was also closed on Hindmarsh Drive, near the Tamar Street intersection, for about half an hour after a two-car crash there.