Since roughly the 1950s, all government-issued stop signs in the United States have been red. But you might be surprised to learn that for the 30 years prior, yellow stop signs were prevalent.

Blue stop signs are not issued by the U.S. Department of Transportation. Instead, they're often used on private property, especially in Hawaii.

Nearly every member of Nebraska's Legislature signed a resolution last week calling for the city to install stop signs on 14th Street outside the Capitol, reigniting a yearslong effort.

An intersection with a two-way stop near Christie St. and St. Clair Ave. W. in Toronto. Each year in the United States, 700,000 police-reported crashes occur at stop signs.