Freight & Transport
US rail freight volume saw strong growth in May: freight car volume hit a new high since 2019, intermodal transport set a record.
According to data from the Association of American Railroads, freight carloads in May increased by 2.5% year-on-year, reaching a new high since 2019, while intermodal traffic grew by a record 8.1%, indicating a broadening foundation for freight growth.
WASHINGTON — According to the latest "Rail Industry Overview" released by the Association of American Railroads (AAR), U.S. rail freight volumes continued their growth trend in May 2026, with carload volumes reaching their highest level since 2019 and intermodal volumes setting a new all-time record.
Key Data
- Carloads: Up 2.5% year-over-year in May, marking the fifth consecutive month of growth and the highest level since 2019. Among the 200 commodities tracked by the AAR, 15 categories posted year-over-year increases, indicating broad-based growth.
- Intermodal Volume: Up 8.1% year-over-year in May, the fourth consecutive month of growth, reaching a new all-time high. The AAR noted that this reflects "continued resilience in consumer-related freight demand and international trade flows."
- Freight Rail Index: The Freight Rail Index (FRI) reached its highest level in 17 months in April, reinforcing broad signals of improved momentum in the commodity sector.
Industry Interpretation
AAR Chief Economist Rand Ghayad stated that rail freight data is a key leading indicator of economic activity. "If the rail industry is performing well, it means the economy is on the right track." He emphasized that the breadth of growth in May's data is the most important signal — simultaneous growth across multiple sectors such as agriculture, intermodal, and chemicals often points to more sustained underlying economic vitality.
Outlook and Risks
The AAR report noted that the economic outlook still faces uncertainties including inflation trends, labor market conditions, trade policy changes, and geopolitical events. However, cumulative signals from rail freight remain positive: the growth base is becoming increasingly broad, manufacturing activity continues to improve, agricultural demand is strong, and intermodal volumes indicate sustained resilience in consumer goods demand.
Supply Chain Impact
Robust growth in rail freight volumes provides direct support to the U.S. supply chain. Record-high carloads indicate active transport of bulk raw materials (such as chemicals, lumber, metals, etc.), while intermodal growth reflects strong demand for container imports and domestic distribution. This trend helps alleviate some previous transportation bottlenecks, though attention must be paid to labor and equipment availability.
Outlook
As the traditional peak freight season approaches in the second half of the year, if the current growth trend continues, rail capacity may face some pressure. However, the broader growth base also provides room for buffer in supply chain diversification.
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