Left-hand turns are dangerous and wasteful, data shows. By avoiding them whenever possible, UPS saves 10 million gallons of fuel each year. Should you do the same?
원문출처 : http://www.cnn.com/2017/02/16/world/ups-trucks-no-left-turns/index.html
원문출처 : http://www.cnn.com/2017/02/16/world/ups-trucks-no-left-turns/index.html