In the highway sign example, a downward arrow designating a lane becomes a slightly larger pot leaf.

Federal law says the highway signs can only be 8 square feet at most.

Within minutes, extremely high winds can arise, strong enough to knock over highway signs and topple large trees.

However, some states do use highway signs that distinguish between a federal and state route.

He's scared of heights, so he usually has his henchmen tag his own graffiti at heaven spots (places that are life-threatening, such as highway signs).