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Every statistic on this site is listed here with its source, link, and as-of date. Headline figures are corroborated by a second independent source; figures resting on a single source are marked as such.

ClaimSourceAs ofTier
Intermodal freight is the movement of a single sealed container or trailer across two or more transport modes without the cargo inside being handled.Definitional; paraphrased from IANA's own wording.IANA — What is Intermodal Transportation?Cited; © IANAaccessed 2026-051
Containerization collapsed cargo-handling cost: loading loose break-bulk freight onto a ship ran about $5.80 per ton in 1956, versus roughly 16 cents per ton by container.~$5.80/ton (break-bulk, 1956) vs ~$0.16/ton (container)Single-author origin; figure appears as $5.83 vs $5.86 across retellings, so cite as '~$5.80/ton'. Verification: UNVERIFIABLE to primary text (book not machine-fetchable) — present as Levinson/historical, not a headline stat.Marc Levinson, The Box (Princeton University Press)Cited; © Princeton University Press1956 cost data (historical)2
More than 80% of world merchandise trade by volume is carried by sea, and most manufactured goods that travel by sea move inside containers.over 80% of world trade by volume, by seaHEADLINE. This is the defensible REPLACEMENT for the discredited "~95% of goods move in containers" folklore (no primary source; dropped). State the figure as by-sea (not by-container); make the containerization point qualitatively. Pin to a specific year PDF at publish.UNCTAD — Review of Maritime Transport+ corroborated: UNCTAD Review of Maritime Transport, 2023 ed. (un-ilibrary.org)Cited; © UNCTAD (UN)figure recurring across 2021-2025 editions1
The North American intermodal industry generates about $55 billion in annual revenue, including roughly $28.7 billion in drayage and $19.7 billion in IMC-related revenue.$55 billion (per IANA)HEADLINE but effectively SINGLE-SOURCE: the only corroboration (ACEC brief, Aug 2025) itself attributes the figure to IANA, so present strictly as "$55 billion (per IANA)" — not an independent or federal statistic. IANA prints no methodology or vintage; older IANA-linked materials cited ~$40B.IANA — What is Intermodal Transportation?Cited; © IANAundated; current per IANA, c. 2024-20251
U.S. railroads moved about 14.06 million intermodal units (containers plus trailers) in 2025, up 1.5% over 2024 — among the strongest years on record, behind the 2018 peak of 14.36 million (the chart's weekly-recap series also shows 2021 slightly higher than 2025).14.06M containers + trailers, +1.5%; 2018 record 14.36MHEADLINE. Two independent outlets plus AAR agree. AAR weekly traffic separately showed 13,851,979 units through 51 weeks (+1.6%), which reconciles. Distinct from IANA's broader "18M rail loads" scope.AAR — Rail Industry Overview (issued Jan 10, 2026)+ corroborated: Logistics Management & Trains Magazine (independent relays of AAR RIO)Cited; © AAR (reported via Progressive Railroading)full-year 20251
U.S. rail intermodal originations (containers plus trailers) by year, 2014-2025, from AAR's year-end weekly traffic recaps — peaking near 14.47 million in 2018, falling to about 12.79 million in 2023, and recovering to roughly 14.06 million in 2025.13.50M (2014) → 14.47M (2018 peak) → 12.79M (2023) → 14.06M (2025), millions of unitsTrend-chart series. This is AAR's "weekly-recap" originations series and runs ~0.1M above the separately-published Rail Industry Overview (RIO) rounding used for the headline figures in [aar-intermodal-units-2025] (RIO: 14.36M 2018 record, 14.06M 2025). 2023 carries a genuine ~0.1M source-level discrepancy; shown per the recap's stated "down 4.9% vs 2022." Figures rounded to two decimals.AAR year-end traffic recaps (via Progressive Railroading / Railway Age)Cited; © AAR (reported via trade press)full-year 2025 (reported Jan 2026)1
IANA frames the network's annual scale as roughly 18 million loads moved by rail, about 76 million loaded TEUs handled at marine terminals (~212,000 per day), about 102 million drayage moves, and roughly 3 million containers in service.18M rail loads; 76M TEUs; 212,000/day; 102M drayage; 3M containersIANA-attributed scale framing, not a precise federal count. The "18M loads" figure exceeds AAR's 14M units because it counts a broader set of moves — flag the scope difference on /sources, not as a contradiction.IANA — What is Intermodal Transportation?Cited; © IANAundated; accessed 2026-051
The TEU (twenty-foot equivalent unit) is the standard container-counting measure: one 20-ft ISO box equals one TEU and a 40-ft box counts as two TEU (one FEU).1 x 20-ft = 1 TEU; 1 x 40-ft = 2 TEUConcept is universal. The CEVA glossary URL originally cited for the wording returned HTTP 403; anchor the unit to ISO 668 instead.ISO 668 (standardization of the 20-ft Series-1 box)Cited; © ISOsettled industry usage; ISO 668:20201
Under ISO 668, a Series-1 20-ft container measures 6.058 m long, 2.438 m wide, and 2.591 m high externally.6.058 m L x 2.438 m W x 2.591 m H (19'10.5" x 8'0" x 8'6")iso.org/standard/76912.html blocks automated fetch; dimensions cross-read from the ISO 668 table on Wikipedia. Internal width 2.330 m.ISO 668:2020 (Series 1 freight containers — classification, dimensions and ratings)Cited; © ISO (table via Wikipedia, traces to standard)ISO 668 7th edition, 2020 (first edition 1968)1
Under ISO 668, a Series-1 40-ft container measures 12.192 m long, 2.438 m wide, and 2.591 m high externally, with a standard-height interior of about 11.998 m by 2.330 m.12.192 m L x 2.438 m W x 2.591 m H; interior 11.998 m x 2.330 mHigh-cube 40-ft boxes are 2.896 m (9'6") tall. A standard 40-ft box yields roughly 2,390 cu ft interior (vendor figure; approximate).ISO 668:2020Cited; © ISO (table via Wikipedia, traces to standard)ISO 668 7th edition, 20201
A 53-ft domestic container holds materially more than a 40-ft ISO box — on the order of 26 floor pallets versus about 20-21 — because it is longer, wider, and taller.~26 vs ~20-21 floor pallets (48"x40")Exact pallet counts vary by loading assumptions; present as approximate or as a cube comparison. The directional gap is reliable.Load Optimizer / Mobile Modular (logistics references)Cited; commercial reference2026 guides3
A 53-ft domestic container offers substantially more cube than a 40-ft ISO box — by the source's own dimensions about 37% more deck area (416 vs 320 sq ft), and roughly 60% more interior volume once height is included.~37% more floor area (416 vs 320 sq ft) per the cited sourceCORRECTED: the cited page states "37% more capacity" (416 vs 320 sq ft), NOT the "60%" originally drafted (verification FAIL). Prefer the computed cube comparison (53-ft ~3,850 cu ft vs 40-ft ISO ~2,390 cu ft) and hedge; do not attribute "60%" to this URL.Trailer Bridge (carrier reference)Cited; commercial referenceaccessed 2026-053
Federal regulation defines TOFC service as rail transport of a freight-laden highway truck, trailer, or semitrailer, and COFC service as rail transport of a comparable freight-laden intermodal container.49 CFR 1090.1COFC drops the trailer's road gear and allows two containers per well — the key efficiency driver.49 CFR 1090.1 (Cornell LII) / FRA eLibraryPublic domain (U.S. Gov)current CFR, accessed 2026-051
U.S. intermodal rail shifted overwhelmingly from trailers to containers, with the trailer/container mix moving from about 55/45 in 1990 to 25/75 in 2000 and roughly 9/91 by 2020.55/45 (1990) -> 25/75 (2000) -> 9/91 (2020), trailers/containersAttribute the percentages to this academic source, not directly to AAR.Geography of Transport Systems (transportgeography.org)Cited; academic (derived from AAR data)data through 2020-20212
Double-stacking requires about 5.5 m (roughly 18 ft) of vertical clearance, which limits the routes where stacked containers can run.~5.5 m (~18 ft) clearanceGeography of Transport SystemsCited; academicaccessed 2026-052
Transloading shifts the contents of ocean ISO boxes into larger 53-ft domestic containers near ports — commonly three maritime boxes into two domestic boxes — cutting inland transport cost by roughly 30%.3 maritime -> 2 domestic; ~30% inland cost savingsWidely cited rule of thumb, not a .gov statistic.Port Economics, Management and PolicyCited; academicaccessed 2026-052
A substantial share of imports through North American West Coast ports — about 30% — is transloaded into domestic containers before moving inland by rail.~30% of West Coast port containers transloaded then railedSingle academic source; treat the ~30% as illustrative.Port Economics, Management and PolicyCited; academicaccessed 2026-052
North American intermodal volume splits roughly evenly between equipment types: in Q3 2025 IANA reported about 51% international ISO containers and 48% domestic containers plus trailers.~51% international / ~48% domestic (Q3 2025); total 4,757,324 units, +2.8% YoYORIGIN is IANA (Tier 1) via Tier-2 trade press. The aggregate total (4,757,324, +2.8%) and directional ~48/51 split are corroborated; the exact 48%/51% percentages and component unit sub-totals (2,308,698 / 2,448,571) trace to IANA's own report and should be confirmed against IANA Intermodal Market Trends before printing precise figures. Trailers (115,950) are a shrinking slice (-18.7%).IANA — Intermodal Market Trends (via Progressive Railroading)+ corroborated: Logistics Management (second trade outlet relaying IANA)Cited; © IANA (reported via trade press)Q3 20251
Union Pacific's premium domestic intermodal train runs from Southern California (City of Industry) to the Chicago area (Global 2, Northlake IL) in about three days, roughly two days faster than prior service.3 days ramp-to-ramp; ~2-day reductionDOMESTIC intermodal (53-ft boxes), not import ISO boxes — captions must not imply an import IPI box always rides this exact schedule.Union Pacific — Inside Track / press release+ corroborated: Trains.com / Supply Chain DiveCited; © Union Pacificservice launched Apr 28, 20241
On BNSF's fastest expedited service a container can travel ramp-to-ramp from Los Angeles to Chicago in about 78 hours, with expedited trains averaging ~800 miles/day versus ~600 for standard service.78 hours LA-Chicago expedited; ~800 vs ~600 mi/dayThe separate "~49 hour San Bernardino-Chicago" fastest-Z figure is NOT on the FAQ page; it is attributed to a BNSF spokesman via Trains.com — cite Trains.com (https://www.trains.com), not the FAQ, for that number.BNSF Intermodal FAQCited; © BNSFaccessed 2026-05 (page undated)1
Published premium/expedited intermodal transit from LA/Long Beach to Chicago typically lands in a roughly 3-to-4-day line-haul band, before port dwell, drayage, and ramp dwell are added on each end.~3-4 days line-haul (premium/expedited)Frame as line-haul only; door-to-door timing runs higher once dwell is included.Synthesis of Union Pacific + BNSF carrier figuresCited; © carriers2024-20261
Across major North American container ports in 2024, about 24% of import boxes moved inland directly by international intermodal (IPI) rail, about 16% were transloaded into domestic boxes then railed, and roughly 60% left by truck.24.2% IPI rail / 16.1% transload-then-rail / 59.6% truck (2024)All-port aggregate (of 31.3M TEU), NOT LA/LB-specific — keep that framing.Port Economics, Management and PolicyCited; academic20242
On the U.S./Canada West Coast (Prince Rupert through Los Angeles) the rail share of inland-bound import containers is materially higher than the national average, cited at roughly 60-70%.60-70% (West Coast import boxes inland by rail)Broad coast-wide range; mixes IPI and transload.Port Economics, Management and PolicyCited; academic20242
The Port of Los Angeles reports that about one-third (around 35%) of its intermodal containers use the port's rail network.~35%Port page returned HTTP 403 to automated fetch; figure confirmed via search of the official .org page. Undated.Port of Los Angeles — Rail / Supply Chain pageCited; © Port of Los Angelescurrent 2025-2026 (undated stat)1
The Port of Long Beach's Pier B program aims to raise the share of cargo leaving the port by rail from roughly 20% today toward about 35%, while growing on-dock rail throughput from about 1.5 million to 4.7 million TEU by around 2032.~20-22% -> 35% rail share; 1.5M -> 4.7M TEU on-dock; ~$1.5B; ~2032CORRECTED (verification FAIL): rail-share baseline is ~20% (some sources ~22%) -> 35%, NOT "28% -> 35%". Project cost is $1.5B (USDOT figure), NOT "$1.8B". The TEU figures and ~2032 completion are correct.Port of Long Beach — Pier B On-Dock Rail Support FacilityCited; © Port of Long Beach (relayed via trade press)2024-20251
The international intermodal (IPI) rail share out of LA/Long Beach has been volatile, falling from about 68% in 2019 to roughly 57% in 2021 and a low near 41% in early 2022 amid ramp congestion and carrier booking restrictions.~67.9% (2019) -> ~56.8% (2021) -> ~40.8% (early 2022)Historical only — do NOT present as a current figure. Figures trace to ACTA (stronger attribution than the relaying roundup, whose URL 404'd on direct fetch).Alameda Corridor Transportation Authority (ACTA) dataCited; data attributed to ACTA2019-20222
Rail-destined container dwell at the San Pedro Bay ports averaged roughly 5 days in August 2025, down sharply from about 8 days a year earlier, while local truck dwell ran under 3 days.rail 4.98 days (Aug 2025) vs 8.20 days (Aug 2024); truck ~2.73 daysSpecific and regularly published; not a .gov figure.Pacific Merchant Shipping Association (PMSA) dwell reportsCited; © PMSA (industry association)Aug 20252
Demurrage accrues when a container sits at the marine terminal beyond its free time; detention applies to the extended use of carrier equipment after the box has left the terminal and is not returned on time.Federal Maritime CommissionPublic domain (U.S. Gov)current 20261
Under the FMC's 2024 Demurrage and Detention Billing Final Rule, only ocean carriers, NVOCCs, and marine terminal operators may issue these invoices, and invoices must be issued within 30 days of charges last accruing.effective May 28, 2024; 30-day issuance windowThe rule's "one bill to one party (shipper or consignee)" provision (46 CFR 541.4) was VACATED by the D.C. Circuit on Sep 23, 2025 (WSC v. FMC) — see fmc-billing-vacated. State the one-party language only with that caveat.Federal Maritime Commission — Final RulePublic domain (U.S. Gov)rule effective May 28, 20241
A September 23, 2025 D.C. Circuit decision (WSC v. FMC) vacated the rule's provision limiting who could be billed, reopening whether carriers may bill motor carriers, so the billing-party question is in flux.ruling dated Sep 23, 2025; vacated 46 CFR 541.4Only 46 CFR 541.4 was vacated; the rest of the rule stands. Cite the FMC article / Holland & Knight rather than only the maritime-law blog originally used.FMC article / Holland & Knight commentary on WSC v. FMCCited; FMC / legal commentarySep 23, 20251
Containers move empty because trade is imbalanced: import-heavy regions accumulate empties while export-heavy Asia runs short, forcing carriers to ship boxes back empty to rebalance.Qualitative; conceptually well established.Sea-Intelligence (via Maritime Optima) / industry analysisCited; industry analysis20242
Roughly four in ten container moves now run empty: empty container-miles rose to about 41% in 2024, up from about 31% in 2019.~41% empty (2024) vs ~31% (2019); 4.1 empty miles per 10 fullCORRECTED: use 41% (Sea-Intelligence), not the "41-42%" upper bound originally drafted. The cited Maritime Optima URL 404'd on fetch; figure confirmed via search — re-pin the link at publish.Sea-Intelligence (reported via Maritime Optima)Cited; Sea-Intelligence analysis2019 and 2024 estimates2
Repositioning empty containers is estimated to cost ocean carriers more than $20 billion a year, commonly cited as over 12% of liner operating costs.>$20 billion/yr; >12% of operating costsCORRECTED: cited source supports only ">$20B" and ">12% of opex" — drop the "$23B" upper bound. Still wants a Drewry primary before publishing the dollar figure.Container xChange (tracing to Drewry Container Census)Cited; commercial blog (tracing to Drewry)20243
Six Class I freight railroads operate in North America: BNSF, Union Pacific, CSX, Norfolk Southern, Canadian National (CN), and Canadian Pacific Kansas City (CPKC).six Class I railroadsHEADLINE. Four U.S.-headquartered (BNSF, UP, CSX, NS) plus two Canadian-parent (CN, CPKC). The UP-NS merger remains pending (see up-ns-merger), so six still operate.AAR — Freight Rail Facts & Figures+ corroborated: RailState guide; STB recordCited; © AAR2025; still six as of May 20261
The Surface Transportation Board defines a Class I railroad by an annual operating-revenue threshold indexed yearly for inflation — about $1.075 billion for the 2024 determination.$1,074,600,816 (2024 determination)In 2021 STB reset the base to $900M (2019 dollars), then inflation-indexed (2024 deflator 0.8375). Direct Federal Register fetch was blocked; corroborated to STB primary + Railway Age.STB / Federal Register — Railroad Revenue Adequacy 2024+ corroborated: STB economic-data / deflator-factors page; Railway AgePublic domain (U.S. Gov)2024 determination1
All six Class I railroads handle intermodal traffic, which is a core franchise for the Western U.S. roads (BNSF, UP) and the transcontinental Canadian carriers (CN, CPKC).Qualitative; all Class Is run intermodal, volumes vary.AAR — Freight Rail Facts & FiguresCited; © AAR20251
Union Pacific and Norfolk Southern have proposed a merger (announced July 29, 2025) to form a transcontinental railroad; as of late May 2026 the STB accepted the revised application (May 28, 2026) but has not approved it, with proceedings partly in abeyance pending supplemental filings due July 27, 2026.~$85 billion deal value; STB accepted revised app May 28, 2026CORRECTED: the ~$85B value is NOT stated in STB PR-26-13 — attribute it to Railway Age / the deal announcement, not the STB release. The merger is NOT complete; six Class I railroads still operate.STB press release PR-26-13 (status); Railway Age (deal value)Public domain (U.S. Gov) for status; Cited (Railway Age) for valueMay 28, 20261
An intermodal marketing company (IMC) buys rail intermodal capacity wholesale directly from the railroads, arranges drayage and equipment, and resells door-to-door service to shippers under a single freight bill.Railroads chose to sell intermodal wholesale rather than retail, which is why IMCs exist; a broker that does not buy rail service directly is not an IMC.IANA — Understanding Intermodal / Intek LogisticsCited; © IANA20251
Drayage carriers provide the short-haul first/last-mile trucking between ports or rail ramps and shippers, and every interstate motor carrier must register with FMCSA and hold a USDOT number.Shippers/IMCs vet drayage carriers via FMCSA's SAFER system (operating authority, insurance, out-of-service status).FMCSA — RegistrationPublic domain (U.S. Gov)20261
The Port of Los Angeles handled about 10.3 million TEUs in 2024, its second-busiest year on record.10.3 million TEUs (2024)HEADLINE. Port page returned HTTP 403; corroborated to multiple independents + Bloomberg. 2021 = 10.7M record.Port of Los Angeles — Facts & Figures+ corroborated: Bloomberg / TT News / AJOT / Maritime ExecutiveCited; © Port of Los Angelescalendar year 20241
The Port of Long Beach moved about 9.6 million TEUs in 2024, its busiest year ever.9.6 million TEUs (2024), +20.3% YoYHEADLINE. Record, beating 2021's 9.38M.Port of Long Beach (via TT News)+ corroborated: gCaptain / Maritime Magazine / AJOTCited; © Port of Long Beach (relayed)calendar year 20241
The Port of New York and New Jersey handled about 8.7 million TEUs in 2024 (8,698,526), its third-busiest year and up 11% over 2023 — the largest East Coast gateway.8,698,526 TEUs (2024), +11% YoYHEADLINE. RESOLVES a conflicting 4.16M figure seen in one secondary aggregation — use 8.7M. PANYNJ PDF was binary/unparseable on fetch; corroborated to the PANYNJ press release + independents.Port Authority of NY & NJ — Port at a Glance 2024+ corroborated: Asia Cargo News / NJB Magazine / PANYNJ press releaseCited; © PANYNJcalendar year 20241
The Bureau of Transportation Statistics publishes the authoritative annual ranking of the top U.S. container ports by TEU.Canonical cross-port ranking; page blocks automated fetch but is the official source.BTS — Top 25 Container Ports by TEUPublic domain (U.S. Gov)annual1
Ocean carriers historically owned the U.S. chassis fleet and supplied them free to truckers; beginning around 2009 they divested toward third-party leasing companies and neutral pools.carrier share ~51% (2009) -> ~17% (2013)Maersk launched Direct Chassis Link (DCLI) and began charging use fees in Aug 2009; CMA CGM followed in 2010. The 51%->17% figures are a directional/historical trend.Universal Cargo / Inbound LogisticsCited; trade press2009-20132
The major neutral chassis pool and leasing operators are DCLI, TRAC Intermodal, and Flexi-Van, with cooperative pools such as NACPC managed via Consolidated Chassis Management.Names for identification only; company-reported fleet sizes used qualitatively, not as stats.FreightWaves / DCLI / TRACCited; trade press / company20262
A beneficial cargo owner (BCO) is the importer or owner of the goods who controls its own logistics and contracts directly with carriers rather than going through a freight forwarder or NVOCC.BCOs are the end customers IMCs ultimately serve.Freightos / NTS glossaryCited; industry glossary20262
Container shipping lines reorganized into a new set of vessel-sharing alliances effective February 2025 — the Gemini Cooperation (Maersk and Hapag-Lloyd), the Ocean Alliance, and the Premier Alliance (ONE, HMM, Yang Ming) — with MSC operating largely on its own.Alliances pool ship capacity, not ownership or pricing. Gemini capacity figures are vendor-reported (~290-340 vessels phasing in) — treat as approximate.Maersk / Hapag-Lloyd / Upply / gCaptainCited; trade pressFeb 20252
The U.S. freight rail network spans nearly 140,000 miles, with 6 Class I railroads and roughly 615 short line (Class II/III) railroads.~140,000 miles; 6 Class I; ~615 short linesAAR — Freight Rail Facts & Figures+ corroborated: AAR facts page (direct) + Progressive Railroading relayCited; © AAR20251
Class I railroads account for about 67% of U.S. rail mileage, 87% of employees, and 94% of revenue.67% mileage / 87% employees / 94% revenueAAR — Freight Rail Facts & FiguresCited; © AAR20251
ISO 668 classifies Series 1 freight containers and sets their external dimensions and weight ratings.ISO 668:2020 ("Series 1 freight containers — Classification, dimensions and ratings")iso.org blocks automated fetch; title/number confirmed via corroborating pages.ISO.org (standard 76912)Cited; © ISO2020 edition (current as of 2026-05)1
ISO 1161 specifies the basic dimensions and the strength requirements for the corner and intermediate fittings of Series 1 containers.ISO 1161:2016 ("Series 1 freight containers — Corner and intermediate fittings — Specifications")ISO.org (standard 65553)Cited; © ISO2016 edition (revision ISO/DIS 1161 in development)1
Corner castings let cranes lift, lock, stack, and lash containers, giving the box its interchange compatibility across handling systems and transport modes.Qualitative; the single feature that makes containers interoperable.ISO 1161 scope + CHS Container GroupCited; © ISO / explanatory2016 standard1
A twistlock engages the oval aperture of a corner casting and rotates to lock, securing a container to a crane spreader, a chassis, a ship's deck, or the box stacked below.Union Pacific well-car explainerCited; © Union Pacificarticle dated 20212
Corner castings are typically cast steel with nominal block dimensions of roughly 178 x 162 x 118 mm.178 x 162 x 118 mmDouble-sourced across two suppliers but still secondary, not ISO text. Confirm against ISO 1161 before printing.Container suppliers (ContainerNut; HZ Containers; CHS)Cited; commercial referencereference pages, current2
ISO 668 Amendment 2 (2016) raised the maximum gross mass for standard Series 1 containers (except 10-ft units) to 36,000 kg, equal to about 79,370 lb.36,000 kg / 79,370 lb36,000 kg = 79,366 lb; the 79,370 lb rounding is the standard published conversion.ISO 668 amendment historyCited; © ISO (via Wikipedia, traces to standard)Amendment 2, 20161
Before 2016, ISO 668 Amendment 1 (2005) set the maximum gross mass of 20- and 30-foot units at 30,480 kg (67,200 lb), which remains the operational rating stenciled on many older boxes.30,480 kg / 67,200 lbISO 668 amendment historyCited; © ISO (via Wikipedia, traces to standard)Amendment 1, 20051
The 53-ft North American domestic container is about 53 ft long, 102 in (8'6") wide, and commonly 9'6" high (high-cube), giving roughly 3,850 cu ft of capacity — more than a 40-ft ISO box.53' L x 102" W x 9'6" H; ~3,850 cu ftCORRECTED: capacity is ~3,850 cu ft per the cited source (not 3,884). No single ISO standard governs the 53-ft box (it is North American, AAR/industry-governed). The 102 in width exceeds the 96 in (8 ft) ISO width.QB Transportation / Container Addict (vendor specs)Cited; commercial speccurrent vendor listings 2024-20262
A 53-ft container empty weighs roughly 12,000 lb (about 5,490 kg); on the road the binding ceiling is the U.S. 80,000 lb gross limit for the whole tractor-chassis-container-cargo combination.tare ~12,103 lb / ~5,490 kg; 80,000 lb U.S. gross combinationTare is vendor-sourced — upgrade via AAR/manufacturer. Cite FHWA/49 CFR directly for the 80,000 lb limit at publish.Vendor spec (Container Addict) + FHWA / 49 CFR for the 80,000 lb limitCited; commercial spec + Public domain (U.S. Gov) for limitcurrent2
A well car is an evolved flatcar with a central depression — the 'well' — that lets a container ride low between the trucks so a second container can stack on top within clearance limits.Union PacificCited; © Union Pacific2021 article2
By stacking two containers per car, well cars roughly double the container capacity per train of a given length versus single-stack flatcars, sharply cutting cost per container.~2x containers per trainHEADLINE for Ch5. Solidly corroborated as a qualitative 'roughly doubles'.Union Pacific+ corroborated: Wikipedia — Double-stack rail transport ("roughly twice as many containers")Cited; © Union Pacific2021 / current2
Double-stack rail now carries nearly 70% of U.S. intermodal shipments.~70%Attribute to UP; both UP and Wikipedia trace to the same UP claim, and there is no dated independent (e.g., AAR) measurement.Union PacificCited; © Union Pacific2021 article (no explicit measurement date)2
The first double-stack intermodal car was developed in 1977; American President Lines, with the Thrall Company and Union Pacific, refined the well car and launched the first all-double-stack train in 1984.1977 first car; 1984 first all-double-stack trainRe-cite to Wikipedia + UP, NOT the Greenbrier page (which credits Greenbrier/SeaLand/SP/BN and does not confirm 1977/APL/Thrall/UP).Union Pacific + Wikipedia (Double-stack / Well car)Cited; © UP / Wikipediahistorical2
A reefer is a refrigerated container with an integral cooling unit that holds a set temperature, typically across roughly -35 degC to +30 degC, throughout an intermodal journey.typical range -35 degC to +30 degCRange varies by unit (some -30 to +30); frame as "typical/up to".Maersk / TraceContainer / HZ Containers reefer specsCited; reefer specscurrent2
Reefer units draw a steady three-phase supply (commonly 460V); when ship or shore power is unavailable a diesel generator set (genset) — clip-on, under-mount, or on-chassis — powers the unit during drayage.460V 3-phase; three genset mount types460V figure widely cited (380-460V 3-phase); confirm against a manufacturer spec.CIE / Maersk reefer FAQCited; manufacturer / reefer FAQcurrent2
A container chassis is a wheeled steel trailer frame that carries a container on the road; the box locks to it via twistlocks at the corner castings, and the chassis carries the kingpin, landing gear, axles, brakes, and lighting.Wikipedia (Container chassis) + CIE/DCLICited; reference / manufacturercurrent2
A 'chassis split' occurs when the container and an available chassis are not co-located, forcing the trucker to make a separate trip to a chassis pool or depot, adding miles, time, and a fee.The concept is solid; the often-cited $25-$75 per-container fee is UNVERIFIABLE (secondary blogs only) and is omitted as a stat — treat any fee as illustrative.Logistics explainers (IANA referenced on chassis shortages)Cited; logistics explainercurrent2
On average, freight rail can move a ton of goods nearly 500 miles on a single gallon of fuel.nearly 500 ton-miles per gallonHEADLINE. Current (2023 data). Do NOT present older "476/480 ton-miles per gallon" numbers as current — and do NOT label them a 2009 figure (the brief's "2009" provenance was a verification FAIL; ~476-480 are recent ~2012-2022 averages, the genuinely old ~2009 level was nearer 400).AAR — Rail Transportation and the U.S. Economy (Economic Impact Report 2025)+ corroborated: BTS Class I (479 ton-mi/gal, 2022); AAR 2023 fact sheetCited; © AARpublished Feb 28, 2025; underlying data year 20231
Moving freight by rail is roughly three to four times more fuel efficient than moving it by truck.3-4x more fuel efficient than trucksHEADLINE. Two AAR documents agree. A fuel-efficiency multiple, distinct from the GHG percentage.AAR — Economic Impact Report 2025+ corroborated: AAR Intermodal Fact SheetCited; © AAR2025 report1
Shifting freight from truck to rail can cut greenhouse-gas emissions by up to about 75% for the same freight.up to ~75% GHG reduction vs truckingHEADLINE. AAR documents differ slightly on "up to" vs "average" wording — present as "up to ~75%". Frame as vs the same freight by truck; rail line-haul only (excludes drayage).AAR — Economic Impact Report 2025+ corroborated: AAR Intermodal Fact Sheet ("75% average reduction")Cited; © AAR2025 report1
A single intermodal train can take hundreds of trucks off the highway.hundreds of trucks (qualitative)Keep qualitative; the precise per-train truck count varies with train length and double-stacking.AAR — Economic Impact Report 2025Cited; © AAR2025 report1
Intermodal is the single largest source of revenue for the major U.S. railroads — historically around a quarter of their freight revenue.largest single traffic group; ~25% of revenue (circa 2019-2020)The "largest single source" framing is durable and still asserted; the precise ~25% is from a 2020 document (UNVERIFIABLE as current). Present qualitatively, or explicitly label the 25% as circa 2019-2020.AAR — Rail Intermodal Keeps America MovingCited; © AARMarch 2020 publication1
U.S. freight rail generates over $230 billion in annual economic output, supports nearly 750,000 jobs, and returns about $2.50 in economic activity for every $1 invested.$233.4B output; 749,000 jobs (153,000 direct); $25.1B taxes; $2.50 per $1; 3.9 jobs per rail jobSystem-wide freight-rail figures (not intermodal-only) — attribute as 'freight rail'. The $2.50 and 3.9-jobs multipliers are IMPLAN model outputs.AAR — Economic Impact Report 2025 (IMPLAN model)Cited; © AARpublished Feb 28, 2025; IMPLAN data year 20231
Freight railroads move roughly 1.6 billion tons of goods a year over a 135,000+ route-mile network and have invested about $825 billion of their own funds since 1980.~1.6B tons/yr; 135,000+ route-miles; $825B private capital 1980-2024 ($1.3T today)Use the $825B (1980-2024) current figure; supersedes the older $710B (1980-2019). Shifting current rail freight to trucks would require ~80 million additional truck trips (average haul ~1,000 miles).AAR — Economic Impact Report 2025Cited; © AARFeb 2025; investment through 2024, traffic 20231
EPA's SmartWay program assigns about 10,180 grams of CO2 per gallon of diesel burned by rail, drawing on railroads' FRA R-1 financial reports.10,180 g CO2/gallon; truck-equivalent capacity 3,780 cu ftAn emission FACTOR and methodology, not a packaged rail-vs-truck % — use it to substantiate HOW the GHG-reduction claim is computed.EPA — SmartWay Rail Carrier Partner Tool Technical Documentation (EPA-420-B-24-016)Public domain (U.S. Gov)April 2024; data year 20231
The converted tanker Ideal-X made the first containerized commercial sailing on April 26, 1956, from Port Newark, New Jersey to the Port of Houston, carrying 58 thirty-five-foot containers.April 26, 1956; Newark -> Houston; 58 boxes (35 ft)HEADLINE; double-corroborated. Boxes were 35 ft (not ISO 20/40 ft); the ship also carried liquid tank cargo below deck. Feeds /heroes.Maritime Executive / Smithsonian Magazine / Wikipedia (Malcom McLean)+ corroborated: Port Houston + transportgeography.org (both confirm date, route, 58 boxes)Cited; trade/pressaccessed 2026-05 (historical 1956)2
Engineer Keith Tantlinger designed the corner casting and the twistlock mechanism that let containers lock together and stack, plus the spreader bar for ship-to-shore transfer.He left Sea-Land for Fruehauf in 1958. Uncontested design role.Wikipedia (Keith Tantlinger) / Marine Insight / NPRCited; reference/pressaccessed 2026-052
Tantlinger pushed Sea-Land to give up its patent rights, and Malcom McLean agreed to release Sea-Land's corner-fitting and twistlock patents royalty-free so the whole industry could share one design, enabling international standardization.royalty-free release of Sea-Land's patents (NOT literal public domain)CORRECTED framing: use "royalty-free release of Sea-Land's patents," NOT literal "public domain" (verification: "public domain" overstates the legal mechanism). Exact legal mechanism/year described qualitatively, not pinned to a primary patent-dedication record. Feeds /heroes — must use "royalty-free".NPR (2011) / Smithsonian Magazine (trace to Levinson, The Box)Cited; press (trace to Levinson)accessed 2026-052
ISO 668 was first published in 1968 and standardized container external dimensions and ratings; the corner-fitting recommendation ISO/R 1161 followed in 1970.ISO/R 668:1968 first edition; ISO/R 1161 in 1970; current 7th ed. 2020iso.org main page 403'd on direct fetch; the 1968 sample PDF confirms the date independently. Re-pin at publish.ISO.org (ISO 668:2020) + ISO/R 668:1968 sample PDFCited; © ISO1968 first edition (confirmed by the 1968 sample PDF)1
The Staggers Rail Act (Public Law 96-448), signed by President Carter on October 14, 1980, deregulated U.S. railroad economics, letting carriers set most rates competitively and use confidential shipper contracts.Public Law 96-448; signed October 14, 1980HEADLINE; confirmed to the public-law record. Deregulation enabled the pricing flexibility behind modern intermodal/double-stack economics.govinfo COMPS-1804 (public-law record) / STB / AAR+ corroborated: STB (text of the Act) + American Presidency Project (signing remarks)Public domain (U.S. Gov)October 14, 19801
American President Lines launched the first all-double-stack container train ('Stacktrain') in 1984, running Los Angeles to South Kearny, New Jersey, with Union Pacific.1984; LA -> South Kearny, NJDouble-stack well cars themselves were developed in the late 1970s and first deployed ~1981; APL was first to fully commercialize an all-double-stack train service in 1984. Not a designated headline stat.Wikipedia (American President Lines / Double-stack rail transport)Cited; referencehistorical3
The 53-foot domestic container was introduced in North America in 1989, ahead of a federal rule allowing 53-ft trailers from 1990, and grew through the 1990s into the dominant domestic intermodal box.introduced 1989; 53-ft trailers allowed from 199048 ft was an interim step; 53 ft became the primary domestic box. Approximate trend.Wikipedia (Intermodal container) / Transport GeographyCited; reference/academichistorical2
U.S. intermodal volume jumped in the latest week, with 292,743 containers and trailers, up 11.5% over the same week in 2025.292,743 U.S. intermodal units, +11.5% YoYCORRECTED label: these figures are from the week ending May 23, 2026 release (any stray "May 9" label removed). A single strong week against a soft late-2025 base — pair with the YTD figure.AAR — Weekly Rail Traffic, week ending May 23, 2026Cited; © AARweek ending 2026-05-231
Year-to-date U.S. intermodal was up only modestly through the first 20 weeks of 2026, at 5,555,553 units, up 1.4% over the same period in 2025.5,555,553 U.S. intermodal units, +1.4% (first 20 weeks 2026)The contrast (weekly +11.5% vs YTD +1.4%) is the real story; YTD +1.4% is the truer trend.AAR — Weekly Rail Traffic, week ending May 23, 2026Cited; © AARfirst 20 weeks of 2026 (through 2026-05-23)1
North American intermodal also rose in the latest week, to 381,548 units for the week ending May 23, 2026, up 10.3% year over year.381,548 North American intermodal units, +10.3% YoYAAR — Weekly Rail Traffic, week ending May 23, 2026Cited; © AARweek ending 2026-05-231
Intermodal momentum faded late in 2025, with December down 3.4% year over year — a fourth consecutive monthly decline — even as full-year total rail traffic rose 1.5%.Dec 2025 intermodal -3.4% YoY; total rail traffic +1.5% (2025)Attributed partly to retailers pre-ordering ahead of tariffs, then pulling back.AAR Rail Industry Overview (via Progressive Railroading)Cited; © AAR (reported via Progressive Railroading)December 2025 / full-year 20251
CPKC became the first railroad providing single-line service spanning Canada, the United States, and Mexico; the STB approved the CP-KCS merger on March 15, 2023 and it took effect April 14, 2023.approved Mar 15, 2023; effective Apr 14, 2023; seven-year oversightHEADLINE. STB imposed an unprecedented seven-year oversight period. CPKC remains the smallest Class I; the merger is end-to-end (carriers connect mainly at Kansas City).Surface Transportation Board — final decision PR-23-07+ corroborated: Railway Age / PR Newswire / SEC 8-K (deal context)Public domain (U.S. Gov)decision Mar 15, 2023; combination Apr 14, 20231
CP closed its roughly US$31 billion acquisition of Kansas City Southern on December 14, 2021, holding KCS shares in an independent voting trust until the 2023 STB decision.~US$31 billion; closed Dec 14, 2021Value (~US$31B) includes about $3.8B assumed debt.STB / CPKC investor materials (trace to SEC 8-Ks)Cited; STB / SECDecember 14, 20211
Precision Scheduled Railroading (PSR), pioneered by E. Hunter Harrison, runs freight trains on fixed schedules and moves cars point-to-point on simplified routes, prioritizing asset efficiency, and has reshaped — and sometimes de-emphasized — intermodal service.Qualitative. Under PSR several Class Is de-marketed lower-density intermodal lanes; the STB held an October 2017 hearing over CSX service disruptions and continues to monitor PSR.Trains Magazine / FreightWavesCited; trade pressmodel dates to the 1990s; still dominant 20262
Wabtec's all-battery FLXdrive locomotive cut fuel use and GHG emissions by more than 11% in a three-month, 13,320+ mile revenue-service pilot with BNSF in California's San Joaquin Valley.>11% fuel/GHG reduction; 13,320+ miles; ~2.4 MWh pilot unitPilot dates to 2021 — present as background, NOT a 2024-26 result. Next-gen FLXdrive targets >6 MWh.Wabtec press release (BusinessWire, May 17, 2021)Cited; © Wabtecpilot conducted 20212
Union Pacific committed over US$100 million for 20 battery-electric locomotives, described as the largest such investment by a U.S. Class I, to be tested in California and Nebraska.>US$100 million; 20 battery-electric locomotivesSpot-check against UP 10-Q before publish.FreightWaves (corroborated in UP 10-Q)Cited; trade press (corroborated SEC)announced 2021; appears in UP FY2024 10-Q2
Real-time visibility platforms such as project44 and FourKites now stitch rail into multimodal shipment tracking; project44 was again named a Leader in the 2025 Gartner Magic Quadrant and FourKites tracks more than 3 million shipments a day.Qualitative; capability claims are vendor self-description.project44 / FourKites / ResearchAndMarkets (2025)Cited; vendor20252
Interoperable 'gray' pools combine chassis from multiple owners into one shared fleet so any motor carrier can pull any chassis, widely cited as the most cost-efficient model.Qualitative. Recent developments: Memphis Pool of Choice (Oct 2023); SACP 3.0; NACPC General Rate Increase effective Nov 2, 2025. Industry debate persists over a single national pool (DCLI calls it an 'illusion').NACPC / FreightWaves / O TruckingCited; trade press / association2025-20262
The Class I railroad network shown on the facilities map is derived from the North American Rail Network (NARN) Lines, filtered to the six Class I owners and simplified to a coarse context layer.BNSF, UP, CSX, NS, CN, CPKCGeometry simplified (interior vertices decimated, sub-resolution stubs dropped) for web display; owner reporting marks normalized (e.g. NSR→NS, CNR→CN). Not survey-grade — a visual context layer.BTS National Transportation Atlas Database — NARN LinesPublic domain (U.S. Gov)NTAD 2024 release1
Intermodal rail-truck facility locations on the map come from the NTAD Intermodal Freight Facilities (Rail TOFC/COFC) dataset, with service type shown as COFC or both (TOFC+COFC).241 U.S. facilitiesU.S. coverage. The source EQUIPMENT field contains only COFC and TOFC/COFC values; mapped to 'COFC' and 'both'.BTS National Transportation Atlas Database — Intermodal Freight Facilities Rail TOFC/COFCPublic domain (U.S. Gov)NTAD 2024 release1
The container ports plotted on the map are a curated set of the largest container gateways across the United States, Canada, and Mexico, located from public port-authority data.45 ports (US, CA, MX)Hand-assembled because no single federal layer flags 'container terminal'. Point locations only; not a tonnage/TEU ranking. Basemap tiles © OpenStreetMap contributors © CARTO.Public port-authority pages (curated)Curated from public sourcescompiled 2026-052

Tier 1 = federal/.gov, AAR, IANA, standards bodies, official port authorities. Tier 2 = established trade press and academic sources (corroborated for quantitative use). Full methodology and the audit trail of any figure we cut or downgraded is recorded in our research log.

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Map data & basemaps

The facilities map layers and basemaps, with their providers and licenses. Attribution also appears in the map's own credit control.

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Scene photography is used under the Pexels License (attribution not required, provided as a courtesy). Equipment photography comes from Wikimedia Commons under the Creative Commons / public-domain licenses noted beside each credit.