Summary
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IANA's Intermodal Volume Index for July came in at 106.8, the second-highest reading of 2026 and about 6.8% above the 2017–19 trend, signaling durable domestic-led growth as truck capacity tightens. Year-to-date U.S. intermodal units were up 3.8% through late July, supporting the case for truck-to-rail conversion on longer lanes.