what is ground transportation usps

what is ground transportation usps refers to the methods used by the United States Postal Service to transport packages and mail within the U.S. using ground-based vehicles, such as trucks and vans. Ground transportation is typically used for parcels that are not time-sensitive and are being shipped domestically. USPS offers several services that rely on ground transportation, including Standard Post, Retail Ground, and certain Priority Mail packages. While ground transportation may take longer compared to air services, it is a more cost-effective shipping option for heavier or larger items. This service ensures that items are delivered reliably across the U.S. at affordable rates.