UPS delivers 15.8 million packages a day worldwide. To squeeze every ounce of efficiency out of its operations UPS needs to focus on even the smallest things.

One of the things that UPS has done is use an algorithm to make its truck routes more efficient. Accomplished, in part, by minimizing the number of left turns -- and revising the routes -- its delivery trucks take. This may not seem like much to an individual driver, as many consumers see the world. However, on a global scale it adds up quickly.