you can use a bus lane to turn left but only for 100m,
http://www.vicroads.vic.gov.au/Home/Safety...Rules/Buses.htm
Driving in a bus lane
Drivers must not drive in a bus lane, except:
* for up to 100 metres when entering or leaving the road. For example: when turning in or out of a driveway, a service road or to turn at an intersection.