A new analysis from the Association of American Railroads (AAR) Policy and Economics team underscores freight rail’s critical role as a supply chain stabilizer—helping mitigate inflationary pressures and reduce price volatility compared to other freight modes. The research highlights how railroads’ structural and operational advantages—such as predictable pricing, resilience following disruptions, and unmatched fuel efficiency—power a transportation solution that keeps costs in check and goods moving. Representing nearly 40% of long-distance freight by ton-miles, rail’s price stability delivers significant macroeconomic benefits – namely taming inflation.
“Freight rail is more than a transportation mode; it is a critical tool for controlling costs, mitigating inflation, and keeping our economy moving,” said Rand Ghayad, AAR Senior Vice President of Policy and Economics. “This analysis shows those same advantages act as a shock absorber for consumers—keeping goods moving and costs predictable even during turbulent times.”
Drawing on three decades of federal data, industry performance metrics, and sector case studies, the analysis shows that railroads’ cost structure and operating model make them less vulnerable to volatility and better positioned to recover from supply chain shocks. The analysis underwent external expert review to ensure methodological soundness and clarity of findings. Because rail primarily serves manufacturers for bulk and intermediate goods, cost fluctuations are less likely to reach consumers compared to trucking, which dominates last-mile and retail distribution. Longer business planning horizons and superior fuel efficiency further help railroads prevent cost spillovers that drive up consumer prices.
Key findings from the analysis include:
- A 10% acceleration in trucking cost growth correlates with a 2.3% rise in goods inflation, whereas a similar acceleration in rail cost growth results in just a 0.7% rise in goods inflation.
- Trucking cost shocks typically hit consumer prices within one to two months; rail cost changes are smaller, slower, and fade faster.
Beyond price impacts, railroads’ operational resilience reduces the need for emergency trucking, storage charges, and local disruptions that can compound into national price spikes. During the COVID-19 pandemic and port congestion, rail transit times briefly increased but quickly returned to normal. For example, on the busy Los Angeles–Chicago intermodal corridor, transit times peaked at six days but rapidly returned to 4–5 days, ensuring inland movement without driving up shipping costs.
This resilience is built on sustained investments and long-term planning with customers across sectors such as agriculture and energy. Ahead of harvest season, railroads make forward commitments to absorb seasonal peaks and keep rates predictable—moving 25% of domestic grain and 40% of exports. In energy, rail reliably transports three-quarters of U.S. coal, helping reduce inflationary pressure on household energy bills.
Rail’s fuel efficiency not only supports sustainability but also lowers costs. On average, Class I railroads move one ton of freight 480–500 miles per gallon of fuel, about three to four times more efficient than trucks. Since 2000, railroads have improved fuel efficiency by 22%, reducing exposure to energy price fluctuations. If just 20% of long-haul heavy-truck freight shifted to rail, annual savings could reach $13 billion in fuel and $11 billion in reduced congestion and highway damage—benefits that ultimately flow to shippers, taxpayers, and consumers.
