Road maps are used to find your way through anywhere from country roads, to major highways. They show the paths used to get to places. There are road maps for countries, states, citys, and towns. Many state welcome centers include road maps to help touristis navagate though that state.
Topographic maps have many rings that show the elevation of the land. These maps are helpful when planing a hike or where to construct a new building.
These are used by pilots to find the shortest flying distance from place to place.