Traffic delays after truck rollover on Port of Brisbane Motorway, Lytton A truck was travelling west bound on Port of Brisbane Motorway at Lytton on Wednesday morning when it rolled over. A TRUCK rollover is causing delays on a Brisbane motorway. Police said the truck was travelling west bound on Port of Brisbane Motorway at Lytton on Wednesday morning when it rolled over. One man is believed to be trapped in the vehicle. Ambulance and fire crews are en-route to the scene. Motorists are advised delays are expected until the incident has been cleared.