A more thorough explanation:

Definition: The Boulevard Rule is a principle that states that the driver of a vehicle approaching a highway from a smaller road must stop and yield the right-of-way to all highway traffic.

Example: Imagine you are driving on a highway and you see a smaller road that intersects with the highway. If you are on the smaller road, you must stop and wait for all the cars on the highway to pass before you can continue driving. This is because the cars on the highway have the right-of-way.

Another Example: Let's say you are driving on a smaller road and you come to an intersection with a stop sign. You look both ways and see a highway with lots of cars driving on it. You must wait until there is a break in traffic before you can safely cross the highway. This is because the cars on the highway have the right-of-way.

The Boulevard Rule is important because it helps prevent accidents and keeps traffic flowing smoothly. By following this rule, drivers can avoid collisions and keep themselves and others safe on the road.