The benchmark diesel price used for most fuel surcharges hit a significant milestone this week. The post Benchmark diesel price is now highest since war began appeared first on FreightWaves.

The cost of the fuel, used in farm machinery, trucks and other heavy equipment, has surged because of the war in Iran and Ukrainian attacks on Russian refineries.

Diesel prices are rising again just as farmers prepare for the harvest and freight transportation picks up ahead of the holiday shopping season.

Diesel prices across the United States are approaching record territory, creating another headache for truckers, farmers and businesses that depend heavily on the fuel. As of August 26, AAA puts the national average at $5.

The nationwide average for diesel is $5.62 per gallon—roughly 20 cents off the all-time high. But don't expect it to stop climbing anytime soon.

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The Trump administration is negotiating for a direct ownership stake in Venezuelan oil fields, and the reason has less to do with geopolitics than with what is quietly pushing diesel toward record highs at the pump.

With the war in Iran driving up fuel prices, diesel is now nearly $5.60 a gallon, affecting school districts at the start of the year.

Russia has prolonged its diesel export ban until September 30 to tackle ongoing domestic fuel shortages caused by disruptions at refineries.

A new rate has been confirmed to take effect from September 1.