US Trucking Fleets Reduce Speeds to Offset Record Diesel Prices

Trucking companies across the United States are directing drivers to reduce highway speeds in mid-2026, a direct response to diesel fuel prices climbing to over $5.70 per gallon. While the slowdown is a deliberate strategy to conserve fuel, supply chain experts and logistics providers report that the impact on overall delivery times is expected to be minimal, shifting the primary burden onto shippers in the form of higher costs.

The move comes as the logistics industry grapples with fuel expenses that have surged dramatically over the past year. According to data from logistics firms, the national average for a gallon of diesel reached $5.73, a 75% increase from the previous year. In states like Indiana, AAA reported a jump from $3.53 to $5.74 per gallon over the same period. For trucking carriers, where fuel can account for 30% to 40% of total operating costs, this increase represents a significant threat to profitability and operational stability.

This is a critical moment for businesses that rely on freight. While headlines focus on trucks slowing down, the real story for small and mid-sized companies is the direct hit to their bottom line from these surcharges. Managing this volatility requires more than just hoping fuel prices drop. It demands a proactive approach to supply chain optimization to find efficiencies that can offset these unavoidable costs.

In response to the price pressure, carriers have universally implemented or increased fuel surcharges. This long-standing industry practice allows trucking companies to pass on the volatile cost of fuel directly to their customers. The surcharge, which is added to the base freight rate, fluctuates in near real-time with the price of diesel. As a result, businesses shipping goods are now facing significantly higher, and less predictable, transportation bills. This cost is inevitably passed down the supply chain, ultimately contributing to higher prices for consumers.

While slowing down is the most immediate tactic drivers can employ to improve miles per gallon, the industry is also exploring broader strategies to mitigate the financial strain. According to an analysis by FreightWise, a logistics consulting firm, companies are being urged to rethink their mode selection. Where feasible, shifting freight from trucks to rail can yield significant savings. Trains are approximately four times more fuel-efficient than trucks and can carry the freight equivalent of hundreds of tractor-trailers on a single journey.

In our experience, the instinct during supply chain disruptions is to panic and expedite shipments to reduce risk. However, this often magnifies fuel-related costs and can be a critical financial error. Before upgrading service levels, businesses must analyze the full landed cost. This is precisely the kind of strategic financial oversight that our outsourced CFO services provide. We help clients move beyond reactive decisions to build resilient financial models that account for logistics volatility. For guidance on navigating these costs, business leaders can contact C&S Finance Group LLC at csfinancegroup.com.

Other strategies include consolidating less-than-truckload (LTL) shipments to create more efficient full truckloads and improving demand forecasting to reduce the need for expensive, last-minute premium shipments, which typically carry the highest fuel cost multipliers. Carriers are prioritizing customers with consistent and predictable freight volumes, making accurate forecasting more important than ever for securing capacity and stable pricing.

The impact of fuel costs is not uniform across all types of trucking. Standard full truckload (FTL) shipments absorb the increase proportionally to the distance traveled. However, specialized services face greater pressure. Refrigerated transport, for example, is hit twice: once for the diesel powering the tractor and again for the fuel required to run the separate refrigeration unit continuously. Similarly, carriers using less fuel-efficient flatbed or lowboy configurations feel the effect of every dollar increase at the pump more acutely.

The current fuel situation isn't a temporary spike; it's a new operational reality. The era of cheap, predictable freight is likely over for the foreseeable future. Businesses must now treat their supply chain not as a simple operational line item but as a core component of their financial strategy. Building resilience means actively managing these costs, not just absorbing them.

Looking ahead, the industry will continue to watch for potential government incentives for renewable fuels and electric vehicles as a long-term solution to petroleum dependency. In the near term, however, carriers and shippers will likely increase their adoption of AI-powered route optimization software and other technologies to squeeze every possible efficiency out of their operations. The focus will remain squarely on cost mitigation and operational discipline as long as fuel prices remain elevated.