The delivery men deliver packages in the morning and pickup packages in the afternoon. Some large companies who ship many packages out during one day have a trailer that is stationed at their company and taken out in the afternoon. Besides the delivery men there are also drop off boxes and locations that customers can take their packages to. Packages are all taken to a location called a hub. A hub is where the packages are sorted according to zip code and then the packages go back out for delivery.
Many packages go from one hub to another before delivery.
The packages are moved from hub to hub in trailers made specifically for hauling packages. The trailers are loaded with rollers that allow the packages to move easily from front to back of the trailer. The 24 foot long trailer can be loaded by a trained UPS worker in one hour. The trailer also has a drop floor which helps the delivery men, because they do not have to step very high off of the ground. Also the door in the back of the trailer opens fully allow very big packages through very easily.