Ever Notice That UPS Trucks Rarely Make Left Turns?
An estimated 90% of the turns made by UPS delivery trucks are right turns, and that’s intentional, according to the Washington Post. Left turns are seen as inefficient, because they leave trucks sitting in traffic longer. The logistics company says a policy of minimizing left turns has helped it save more than 10 million gallons of fuel over the past decade. Left turns (in countries where people drive on the right) are dangerous, too: New York City officials say left turns are 3 times more likely than right turns to cause a deadly crash involving a pedestrian.
Source: http://www.washingtonpost.com/blogs/innovations/wp/2014/04/09/the-case-for-almost-never-turning-left-while-driving/