More and more, we are hearing that fleets are cutting back truck top speeds to well below the speed limits in order to increase fuel economy. Does everyone understand that time is money?

The cost of retail diesel fell another 10.1 cents last week to $4.502 a gallon, the third-straight weekly decline in the national average that has cut 26.2 cents from trucking’s main fuel, the U.S. Department of Energy said.

The national average retail price of diesel fell 11.5 cents to $4.603 a gallon last week, the largest one-week drop in nearly two years and the second consecutive weekly decline, the Department of Energy reported.

The national average price of retail diesel fell 11.5 cents to $4.603 a gallon, the Department of Energy reported Monday.

The average price of retail diesel in the United States dipped 4.6 cents last week to $4.718 a gallon, the largest weekly drop in more than six months, the Department of Energy reported.

The Environmental Protection Agency said Monday it will award $3.4 million in grants to establish projects using emerging technologies to reduce emissions from the diesel engine fleets.

The U.S. retail diesel average rose 3.7 cents last week to another record, $4.764 a gallon, the Department of Energy reported, while the price of crude oil posted its largest single-day drop in 17 years on July 15.