World famous fleet operator (package delivery) uses technology to cut costs and save Earth!

Have you ever taken a different route to your destination to escape crossings, right hand turns (in Indian context) or traffic?
Daily commuters in Metros these days would take to less-common routes (the road less traveled sometimes proves the road to success) to ensure an easy, congestion-free drive (saves time in most cases). But all such path discoveries happen either by exploring yourself or by a route-tip from friends(at least in India we're still limited in technology to have a live traffic beat). GPS and FM Radio Stations have started filling in but there's still a long way to go.
Just think of situations when we're waiting at the crossing (sometimes even to go straight/left which is supposed to be free), waiting for residual-traffic to clear off, engines all around revving up to cruise thru once the signal goes green... a waste of time and peace-of-mind (for all who're otherwise crunched of time in the work-place)... and also of fuel and money that goes in to fill that extra fuel.
But who cares, it's just a 2min wait, fuel wasted is negligible (I've a 100cc that runs 90kmpl).
Think about a lac big carrier trucks running in similar conditions all over the country-line that eat up not in liters but in gallons and that release a measurable amount of CO2 even when they're waiting to cruise! And what could be the cost-savings
when you own a gigantic fleet of vehicles delivering packages everyday?
Yes, small improvements in the efficiency of each one will translate to huge savings overall — and this is what led U.P.S. to limit further the number of left-hand turns (in US context) its drivers make.

Can't help but to highlight this article from NYT in my blog! One of the best use of technology towards the goal: "Let's make things better"

The company employs a “package flow” software, which among other hyper efficient practices involving the packing and sorting of its cargo, maps out routes for every one of its drivers, drastically reducing the number of left-hand turns they make (taking into consideration, of course, those instances where not to make the left-hand turn would result in a ridiculously circuitous route).

Last year, according to U.P.S., the software helped the company shave 28.5 million miles off its delivery routes, which has resulted in savings of roughly three million gallons of gas and has reduced CO2 emissions by 31,000 metric tons.