What is the primary method used to show distances along Interstate Freeways?

What is the primary method used to show distances along Interstate Freeways?

• A. Subtract exit numbers
• B. Map bar scale
• C. Red Pointers
• D. Black numbers

Answer: (A)

Distances along Interstate freeways are shown using milepost numbers that increase as you travel. The way to get the distance between two points on the same highway is to subtract the earlier milepost from the later one. Because exit numbers line up with those mileposts, you can read the distance by taking the difference between the two exit mile markers. For example, if you’re at milepost 39 and then at milepost 62, the distance is 62 − 39 = 23 miles. Other options aren’t how these distances are read: a map’s bar scale measures distances on a map, not on the road itself, and red pointers or black numbers aren’t standard methods for indicating along-highway distances.

Distances along Interstate freeways are shown using milepost numbers that increase as you travel. The way to get the distance between two points on the same highway is to subtract the earlier milepost from the later one. Because exit numbers line up with those mileposts, you can read the distance by taking the difference between the two exit mile markers. For example, if you’re at milepost 39 and then at milepost 62, the distance is 62 − 39 = 23 miles. Other options aren’t how these distances are read: a map’s bar scale measures distances on a map, not on the road itself, and red pointers or black numbers aren’t standard methods for indicating along-highway distances.