The United States Postal Service (USPS) is an independent establishment of the executive branch of the United States government responsible for providing postal service in the US. Within the United States, it is ordinarily referred to as the "Post Office", "Postal Service", "U.S. Mail" or "USPS"
The USPS operates the largest civilian vehicle fleet in the world, with an estimated 260,000 vehicles. These vehicles are identified by a seven digit number displayed on the front and rear
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