JLT Trucking, a Washington D.C.-area waste collection company, says long-term contracts prevent it from raising rates fast enough to offset diesel costs that have surged nearly 60% since the Iran conflict began, costing the company an extra $100,000 monthly. Diesel prices hit a record $6.49 per gallon, driven by Middle East tensions and supply disruptions, forcing the company to absorb over $1.2 million in additional annual fuel expenses.