A shipping terminal is a term used in transportation and courier services. It is the central point for distributing goods among trucks, trains, shipping containers, trailers, and other vehicles on land, sea, and even air. The term actually developed back in the days of the railroad when trains would enter the shipping terminal and be re-routed. Here, the trains would often lose some of their cars and add others, and some cargo would be shifted from train to train or car to car as necessary.
Today, Chicago courier services make use of shipping terminals. Nearly everything they send on one of their vehicles to either pick up or deliver comes from one of these large hubs. The packages they deliver are distributed to other vehicles to be delivered to other states or, in the case of pick up, to be delivered to a location within Chicago. Today, most shipping terminals are dedicated to one form of transportation: for example, there are specific terminals that handle packages shipped by air, terminals for packages shipped by land, etc. These terminals are quite efficient at moving packages across a large amount of terrain very quickly. They can even get packages to other countries with little stress.
Often, courier services in Chicago send couriers to the terminal to pick up extra packages if they have less than a full load of packages to deliver. This is because courier services see it as a waste to have a half-full truck make deliveries. It costs just as much to run a half-full truck as it does to run a full one, so a truck should always be fun to make the most out of resources, manpower, and time. Consolidating several loads into one saves them money, which in turn can some customers money and make certain that the deliveries reach their destination in time. Sometimes, these trucks make their delivery to a smaller terminal where their packages are split among several smaller vehicles to distribute to their final destination.
If you like, you can always talk to the courier service you're using to get an idea of where the major terminals are located in Chicago. This will let you know what route your package is taking and where it will end up. When you package reaches one of these terminals, it will update on the online tracking system, allowing you to see exactly where your package is at any given time. This way, you'll be able to know if your package is not delivered as it should be. Of course, if you hire a dedicated courier to deliver your package, it may take longer.