Traffic is building on the run into the Brisbane CBD on Friday morning, with delays back more than five kilometres after a car and cyclist collision.
The crash happened about 5.15am on Moggill Road in Chapel Hill and the rider was treated for life-threatening injuries.
The car driver, reportedly a P-plater, was not injured and remained at the crash scene.
Traffic delays are snaking back more than five kilometres along Moggill Road to Rafting Ground Rd in Brookfield.
Moggill Road between the Kenmore tavern and Chapel Hill Road, inbound, is closed and drivers should avoid the area if possible.
The Forensic Crash Unit is investigating.