Multiple northbound lanes were closed on the M1, just before Mount White, on May 7, as a result of a truck fire.
The fire started as a result of sparks from the axle and ball bearings of the truck.
The truck fire then sparked a small bush fire alongside the road.
The multiple lane closures caused heavy traffic delays, queuing back to Hawkesbury River Bridge.
It took fire crews approximately half an hour to extinguish and it took another hour to clear the truck from the scene.
Source: Website, May 7 Facebook, NSW Central Coast Incident Alerts