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

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Multiple Choice

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

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.

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