There are many couriers out there that promise one hour delivery in a lot of their marketing material. This might seem like an empty promise to a lot of people, but the truth is that most of these couriers have a very high success rate of making their deliveries on time. You only have to look at your nearest medical courier to see that there are methods that couriers use to help make sure that they can achieve the best delivery times possible. This is what makes them able to carry through on the promise of a one hour delivery.
The number one thing that makes one hour deliveries possible is communication. Courier offices can now instantly communicate with their drivers in a number of different ways, including wirelessly instantly uploading a GPS route to their drivers GPS unit. With this technology, there is essentially no real lag time between when you place your order, and when a driver starts coming to your location to make a pickup. The elimination of any wasted time is a large part of what makes one hour delivery possible.
It is important to realize that one hour deliveries are not a blanket guarantee which applies anytime and anywhere. Almost any courier that has a one hour delivery promise makes sure that there is a lot of fine print that accompanies such an offer. This isn't because they're trying to avoid responsibility for their promise, only that they have the ability to very reasonably predict when one hour deliveries are possible, and when they are not.
Usually, this means that they say they will not be able to guarantee a delivery time of under an hour at peak traffic times in the city. Every city has their peak traffic hours at which traffic flow can be greatly reduced or almost nonexistent, and it would be impossible for even the best courier to make a one hour delivery under those circumstances.
One hour deliveries also have a clearly defined range within which they are valid. Usually this is a single city, however, in some larger cities this isn't always the case. In a huge metropolitan area the one hour deliveries may only apply to the primary city itself, or its nearest suburbs. Even though there is some fine print though, increases in communications have made it more possible than ever before for you to get reliable one hour delivery service from a courier.