Rail wins as diesel spikes: efficiency math
The diesel price surge is favoring rail economics — roughly 528 ton-miles per gallon for rail vs. 134 for trucks — driving mode shifts, stronger rail intermodal demand, and bigger fuel surcharges for trucking. That efficiency gap is already prompting procurement teams to ask about rail-intermodal tradeoffs. (x.com)
U.S. on‑highway diesel jumped to roughly $5.38 per gallon in late March 2026, a roughly 30% increase from early March driven by the Middle East conflict, according to weekly EIA figures and industry reporting. (eia.gov) Multiple carriers adjusted fuel surcharges in March 2026 — TGAL raised a domestic trucking surcharge from 8% to 12% effective March 16, 2026 — and large logistics providers update surcharge grids weekly tied to the EIA average. (tgal.us) The Association of American Railroads noted intermodal volumes softened in late 2025 but warned that tightening trucking capacity and resilient consumer demand could support intermodal growth through 2026. (aar.org) J.B. Hunt executives told investors at a March 2026 conference that, despite a roughly 30% fuel spike since the Iran conflict, most shippers have not yet changed modal strategies, while market commentary flagged contract‑heavy shippers feeling immediate all‑in rate pressure from surcharges. (indexbox.io) Rail operators are actively promoting fuel‑efficiency economics and intermodal options to win lanes from truckload providers, with railroad materials and industry data underscoring rail’s comparative energy advantage as a sales argument. (csx.com) Industry trackers caution that network limits — terminal space, drayage capacity and schedule cadence — constrained rapid mode shifts in 2025 and will likely cap how fast shippers can move volumes from truck to rail even as diesel pricing favors intermodal. (crmsrail.com)
