Final answer:
The rule is that a driver on an unpacked road must yield the right-of-way to vehicles on a paved road.
Step-by-step explanation:
If you are driving on an unpacked road, you must yield the right-of-way to the vehicle on the paved road. This is a basic rule of road safety that helps prevent accidents at intersections where different types of roads meet. Priority is generally given to the traffic on the main road, which is often paved, over vehicles entering from less major, often unpaved, side roads. It is important to always be aware of traffic signs and signals, as they may further dictate the rules of right-of-way in various driving scenarios.