You are driving behind a tractor and would like to get past but you are not sure if it is safe to do so. What should you do:
Overtake as quickly as possible while flashing your headlights to warn any oncoming traffic that you are coming
Follow closely behind another car that is overtaking the tractor
Not overtake until you are certain that it is safe to do so
Explanation: When overtaking trucks allow plenty of room, pass quickly but safely and pull back in, only when you can see both headlights of the truck in your rear view mirror. This allows a safe space, but don't then slow down in front of the truck.

