The Canberra Raiders ran in four first-half tries before surviving a late Brisbane fightback to win 30-18 in Monday night's National Rugby League match in Canberra.
In chilly temperatures in the capital the Raiders ran up a 24-0 lead in the first half and led 24-6 at the break.
The win improves the Raiders to eighth place, while the Broncos are struggling in 11th place with just five wins from 13 matches.
