Multiple outlets report a truck fire that closes the westbound lanes of Sydney’s M5 motorway during the afternoon peak. The closure leads to significant traffic congestion, with vehicles building up for kilometres along the route. Police are managing the disruption and diverting motorists as the affected lanes remain closed. Commuters are experiencing delays due to the reduced capacity on the highway, with traffic slowing and backing up in the surrounding area. The reports describe the incident as an active cause of disruption rather than a planned shutdown, and they focus on the immediate impact on road travel and the police-led traffic management. While details about the cause of the fire, injuries, or the reopening timeline are not included in the provided summaries, all sources agree on the main points: the truck fire, the westbound closure of the M5, the resulting congestion, and police diversions to reroute traffic.