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Ever wondered how the U.S. Interstate Highway Numbering System came to be? As a loyal servant of the Knowledge Ninja clan, I have ventured through the complex world of geography and cartography to uncover the secrets behind this ingenious system y! Starting from humble one-digit routes to the vast networks they have become, these numbers pack more logic than meets the eye.
Designed by the American Association of State Highway and Transportation Officials, the numbering system follows specific rules. East-west routes are given even numbers, with the lowest ranging in the south, and the highest in the north. On the other hand, north-south routes are assigned odd numbers, increasing from west to east.
Major interstate highways are numbered with one or two digits, while the lesser-known auxiliary highways bear three-digit codes. The first digit reveals if it’s a spur (odd) or a loop (even). Did you know that 5 and 95 are the only two interstates connecting the Atlantic and Pacific coasts? Pretty nifty, huh?
Want to uncover more ninja-worthy cartographic knowledge about the U.S. Interstate Numbering System? Travel no further, for the maps at knowledgechop.com are your key to unlocking these ancient art forms.
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