A truck driver died on Pialligo Avenue near Canberra Airport on Monday morning.
Police believe the man suffered a medical condition whilst travelling east on Pialligo Avenue before he stopped by the side of the road.
Early police reports that the driver crashed into a guard rail after the medical episode were incorrect.
Emergency services were alerted shortly before 5.30am.
Pialligo Avenue had re-opened between Oaks Estate Road and Sutton Road by 9am, after an earlier road closure.
Police advised traffic was moving slowly.