Diesel prices have surpassed previous records. The current national average is $5.85 per gallon. This exceeds the earlier high of $5.81. A significant increase has occurred since the price was $3.76. The rise in diesel cost affects the industrial supply chain, which relies heavily on trains, tractors, and trucks.

The impact of this increase is notable, as diesel plays a crucial role in the economy. Further information on the effects of this price hike is available.

Details on the record high and its implications can be found through additional sources.