IANA Reports July Intermodal Volume Index at 106.8

CALVERTON, Md. – The Intermodal Association of North America (IANA) reported its projected Intermodal Volume Index (IVI) reached 106.8 for July 2026, dipping from June’s 107.7 but marking the second-highest level since the index launched in May 2026. IANA Director of Economics Andrew Sibold stated the reading confirms that recent intermodal market strength is real, with the index remaining significantly above the 2017-19 baseline of 100.

What Are the Technical Specifications?

The IANA Intermodal Volume Index provides an early estimate of North American intermodal freight activity before official monthly figures are published, using a 2017-19 baseline period set at 100. A reading above 100 indicates market expansion relative to that underlying trend, while values below signal contraction. The index was launched in May 2026 as a single-number pulse check on whether the intermodal market is expanding, flat, or contracting. IANA has not disclosed the specific projection methodology or the confidence interval applied to its monthly estimates. Raw intermodal volume counts underlying the index are also not published alongside the IVI reading.

Key Technical Data

Where Does This Technology Stand in the Market?

The IVI enters a freight intelligence landscape already served by several established indices. The Association of American Railroads (AAR) publishes weekly Rail Time Indicators with actual intermodal unit counts for U.S. and Canadian railroads, offering granular operational data but without the forward-looking projection element that distinguishes the IVI. The Cass Freight Index, produced by Cass Information Systems, tracks North American freight expenditures and shipment volumes across all modes monthly, providing broader freight market coverage but with a longer publication lag. IANA’s IVI is unique among these in delivering a pre-release estimate ahead of official intermodal figures, functioning as an early-warning gauge rather than a retrospective tally. Corroborating the IVI’s expansion signal, the Port of Los Angeles and Port of Long Beach both posted strong June 2026 container volumes, sustaining the import pipeline that feeds intermodal rail demand (Source: Logistics Management, July 2026). Globally, the competitive modal dynamic is shifting: China’s new-energy heavy truck sales reached 337,000 cumulative units between January 2025 and May 2026, pushing segment penetration above 29.5% and eroding diesel trucking’s cost advantage in certain corridors (Source: CleanTechnica, July 2026). While North American intermodal benefits from tighter trucking capacity and higher diesel costs, the pace of electric truck adoption in Asia signals a longer-term transformation in road freight economics that could reshape intermodal’s competitive position on medium-haul lanes.

Editor’s Analysis

The July IVI reading of 106.8, though slightly off June’s peak, reinforces a pattern of sustained intermodal demand that diverges from the typical mid-year softening sometimes observed in freight markets. The index’s ability to capture this momentum before official data releases gives logistics planners and rail operators a tactical advantage in capacity allocation. With trucking costs rising and capacity tightening—Volvo Group reported a jump in Q2 2026 truck orders alongside higher operating profit—intermodal’s value proposition strengthens on corridors exceeding 500 miles (Source: Reuters, July 2026). However, the global surge in electric heavy truck deployment, exemplified by SANY Truck’s record shipment of 883 battery-electric units through Guangzhou Port in June 2026, suggests that road freight’s emissions and cost profile will evolve faster than many North American rail strategists have priced into their long-term planning assumptions.

FAQ

Q: What does an IVI reading of 106.8 actually mean for the intermodal market?
A: The reading indicates intermodal volumes are approximately 6.8% above the 2017-2019 baseline trend, signaling market expansion. It is a projected estimate, meaning final official figures may differ when IANA releases them.

Q: How is the IANA Intermodal Volume Index calculated?
A: IANA has not publicly disclosed the specific projection methodology or data inputs used to calculate the IVI. The organisation describes it as an early estimate derived before official monthly intermodal figures become available.

Q: When are the official July 2026 intermodal volume figures expected?
A: IANA typically releases official monthly intermodal data several weeks after month-end. The IVI is designed specifically to bridge this gap, providing market participants with a directional signal ahead of the confirmed numbers.

Q: How does the IVI compare to AAR’s rail traffic data?
A: Unlike the AAR’s weekly Rail Time Indicators, which report actual intermodal unit counts from U.S. and Canadian railroads, the IVI is a single composite index with a forward-looking projection element. The AAR data offers granular operational detail; the IVI offers a faster, aggregated market health signal.