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US 101 isn't the only exception to the US route numbering ssystem. US 400 isn't a branch of any other US highway (not to mention there's no US 0), US 412 is not
by flyinghamster 10y ago
US 101 isn't the only exception to the US route numbering ssystem. US 400 isn't a branch of any other US highway (not to mention there's no US 0), US 412 is not a branch of US 12, and US 425 is not a branch of US 25.