AAR Reports 2.4% Increase in US Freight Rail Traffic

WASHINGTON, United States – The Association of American Railroads reported that U.S. rail traffic reached 525,099 carloads and intermodal units for the week ending August 15, marking a 2.4% rise compared to the same period in 2025. Carload volume expanded 1.9% to 233,261 units, while intermodal shipments rose 2.7% to 291,838 containers and trailers across domestic networks. Cross-border traffic showed parallel momentum, as Canadian carriers moved 166,075 total units and Mexican operators handled 28,650 units during the same seven-day window.

What Is the Full Scope of This Development?

North American rail networks handled a combined 719,824 carloads and intermodal units during the mid-August reporting period, reflecting broad industrial demand despite localized contractions in automotive and energy sectors. Within the United States, eight of the 10 commodity categories tracked by the AAR logged volume expansions. Metallic ores and metals led percentage gains with a 19.2% surge to 23,322 carloads, followed by miscellaneous carloads increasing 17.9% to 9,279 units, and nonmetallic minerals climbing 6.9% to 33,420 units. Conversely, coal haulage contracted 5.7% to 60,219 carloads, and motor vehicles and parts dropped 13.2% to 14,685 carloads. Beyond U.S. borders, Canadian railways posted an 11.6% increase in carloads to 89,096 and a 7.9% gain in intermodal containers to 76,979, while Mexican lines recorded 13,563 carloads, up 12.2%, and an intermodal volume spike of 53% to 15,087 units.

Key Development Data

How Does This Compare to Industry Trends?

Weekly North American traffic patterns mirror longer-term revenue gains achieved by Class I operators even as cyclical macroeconomic shifts alter commodity shares. For example, Canadian Pacific Kansas City Ltd. demonstrated that operating efficiencies can overcome trade barriers, reporting full-year 2025 profit of $4.1 billion on $15.0 billion in revenue, up from $3.7 billion and $14.5 billion in 2024 respectively, despite tariff-induced volume pressures on specific merchandise (Source: CPKC, 2025). The mid-August volume expansion contrasts with subsequent annual periods; for instance, U.S. rail traffic for the week ending March 28, 2026, moderated to a 0.5% growth rate with 515,921 total units, as carload volumes slipped 0.8% to 233,833 units (Source: AAR, 2026). On a global scale, the broader rail freight market was valued at USD 370.0 billion in 2025 and is projected to reach USD 388.5 billion in 2026, advancing at a 4.5% compound annual growth rate toward USD 602.7 billion by 2036 (Source: Future Market Insights, 2025). Dry bulk continues to dominate modal split, capturing 41.75% of global freight movements in 2025, while containerized and intermodal shipments are advancing at an accelerated 6.23% annual pace through 2031 (Source: Mordor Intelligence, 2025). Independent verification of commodity-specific operating margins for reporting Mexican carriers was not available at time of publication.

Editor’s Analysis

The 53% surge in Mexican intermodal volume underscores how nearshoring manufacturing clusters are restructuring continental supply chains. While secular reductions in electric utility coal usage continue to depress legacy carload totals, surging minerals traffic and containerized flows provide a durable volume floor for Class I carriers. This operational realignment supports long-term infrastructure investment, as the global railway system market expands toward USD 50.0 billion by 2036 to accommodate higher-capacity corridor operations (Source: Future Market Insights, 2025).

FAQ

Q: What primary factors drove U.S. rail traffic expansion during the week ending August 15?
A: Growth was driven by an 8-out-of-10 commodity gain, paced by a 19.2% surge in metallic ores and metals to 23,322 carloads. Intermodal volume provided additional lift, rising 2.7% to 291,838 containers and trailers.

Q: Which freight categories suffered volume decreases during this period?
A: Coal loadings fell 5.7% to 60,219 carloads, while motor vehicles and automotive equipment declined 13.2% to 14,685 carloads. The net financial impact of these reductions on carrier operating income was not disclosed.

Q: How did rail traffic outside the United States compare during the same week?
A: Canadian operators moved 89,096 carloads and 76,979 intermodal units, recording year-over-year gains of 11.6% and 7.9% respectively. Mexican railroads moved 13,563 carloads, up 12.2%, while their intermodal traffic jumped 53% to 15,087 units.