IANA Reports Intermodal Volume Index at 106.8 in July

CALVERTON, Md. – The Intermodal Association of North America’s Intermodal Volume Index projected a July 2026 reading of 106.8, dipping from June’s 107.7 but still marking the second-strongest level since the index debuted in May 2026. IANA Director of Economics Andrew Sibold confirmed the July estimate reinforces that recent intermodal market strength is real, not a statistical anomaly.

What Are the Technical Specifications?

The IVI distills multiple intermodal data streams into a single monthly figure benchmarked against a 2017–2019 baseline of 100, with readings above 100 signalling market expansion relative to the underlying trend. IANA designed the index as an early-estimate tool that publishes before official monthly intermodal figures, giving shippers, carriers, and analysts a forward-looking pulse check. The specific weighting methodology and component data sources were not disclosed in the July release. The index first appeared in May 2026 and has since delivered readings consistently above the baseline, with July’s 106.8 trailing only June’s 107.7 within the 2026 series.

Key Technical Data

Where Does This Technology Stand in the Market?

The IVI occupies a distinct niche as the only intermodal-specific early-estimate index in North America, complementing broader freight barometers. The Cass Freight Index tracks total North American freight shipments and expenditures across all modes using a January 1990 baseline, while the American Trucking Associations’ Truck Tonnage Index measures for-hire truck tonnage against a 2015=100 baseline. Neither delivers the mode-specific, pre-official-data snapshot that the IVI provides for intermodal containers and trailers. (Source: Cass Information Systems; American Trucking Associations, 2026) Independent verification of the IVI’s internal correlation with final monthly intermodal figures was not publicly available at time of publication, as only three months of index history exist.

Separately, freight market conditions underpinning the strong IVI readings are corroborated by port data. The Port of Los Angeles and Port of Long Beach both posted strong June 2026 volumes, while a TD Cowen/AFS Freight Index report pointed to elevated truckload and LTL rates — conditions that historically push freight toward intermodal rail as shippers seek cost relief. (Source: Logistics Management, July 2026) Tighter trucking capacity and rising diesel costs continue bolstering intermodal’s competitive position, a dynamic reflected in the IVI’s sustained above-baseline readings.

Editor’s Analysis

Two consecutive months above 106 suggest the intermodal sector is not merely experiencing a seasonal bump but riding a structural demand shift. The IVI’s signal aligns with observable market friction in trucking — capacity tightening and rate elevation — that makes rail intermodal economically attractive for shippers moving freight more than 500 miles. If the index sustains readings above 105 through the third quarter, it would mark the strongest intermodal run since the pandemic-era freight surge. One wildcard: China’s accelerating electric truck adoption, which has pushed cumulative sales to 337,000 units between January 2025 and May 2026 and begun eroding global diesel demand forecasts (Source: CleanTechnica, July 2026). Lower long-term oil prices could eventually narrow intermodal’s fuel-arbitrage advantage, though that effect remains years away from materializing in North American routing decisions.

FAQ

Q: What does an IVI reading of 106.8 actually mean for shippers?
A: It indicates intermodal freight volumes are running approximately 6.8% above the 2017–2019 trend, signalling a healthy and expanding market where capacity and service levels are likely meeting or exceeding seasonal norms.

Q: How does the IVI differ from waiting for IANA’s official monthly intermodal statistics?
A: The IVI publishes as an early estimate before official figures are compiled, giving logistics planners and analysts a two-to-four-week head start on volume direction for contract negotiations and capacity planning.

Q: Has IANA disclosed what data feeds into the IVI calculation?
A: No. IANA has not publicly released the specific component data streams or weighting methodology used to generate the index, though officials have described it as a composite measure reflecting multiple intermodal activity indicators.