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The U.S. average retail price of diesel dropped 1.2 cents to $2.583 a gallon as oil prices remained below $50 a barrel and U.S. rig counts pushed higher. 

INDIANAPOLIS — Diesel fuel dominates the commercial truck world today and will continue to do so in the near future, but greenhouse gas regulations will force the industry to use it more efficiently and eventually could push fleets toward other, cleaner fuels, industry executives said here at the Green Truck Summit.

The U.S. average retail price of diesel slipped 0.2 cent to $2.595 a gallon as oil prices dropped below $50 a gallon and U.S. rig counts continued to rise.

You'll be paying more for gasoline and diesel fuel in Tennessee, starting this summer, after Gov. Bill Haslam signs a bill to increase state fuel taxes.

The U.S. average retail price of diesel rose 1.5 cents to $2.597 a gallon, putting it in a tie for the highest price this year, also reached Jan. 9.

The U.S. average retail price of diesel rose 2.6 cents to $2.582 a gallon, the Department of Energy reported April 10.

The U.S. average retail price of diesel jumped 2.4 cents to $2.556 a gallon, and crude oil prices climbed out of a 2 1/2-week trough, rising to $50 a barrel but still lagging prices a month earlier

The U.S. average retail price of diesel fell 0.7 cent to $2.532 a gallon and crude oil prices extended a bumpy monthlong slide in prices, dropping below $48 a barrel, experts said.