Do even-numbered, 2-digit highways run north-south or east-west?

Do even-numbered, 2-digit highways run north-south or east-west?

• A. North-South
• B. East-West
• C. Northeast-Southwest
• D. Diagonally

Answer: (B)

Even-numbered routes of two digits are arranged to run mainly east-west. This numbering convention is designed so that the number itself hints at orientation: even numbers correspond to routes that go left-to-right across the map, while odd numbers point north-to-south. It’s a handy rule that most of the time matches how the highways actually travel, even though a few routes may bend or be rerouted over time. So the intended direction for these highways is east-west.