Edmonton Transit says slippery road conditions caused a bus to slide into a ravine on Sunday night.
The Route 4 bus slipped off the road around 159th Street and 76th Avenue around 7:30 p.m.
One person was taken to hospital as a precaution. A replacement bus was sent within 15 minutes to pick up the remaining 14 passengers.
The bus was pulled out by midnight. The road has been re-sanded.