The logic behind road numbers

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Knowing the logic behind road numbers can help you navigate when you are lost.

Roads that circumscribe major metropolitan areas have three digits. Thus, 495 circumscribes the Boston area.

Roads the run north/south have odd numbers. Thus, 95 runs from Florida to Canada.

Roads that run east/west have even numbers. Thus, [route 2] runs from Cambridge, out through Williamstown, and beyond.

Recognizing a road's number can therefore help you navigate when you are lost.

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