INTERMODAL COMPLIANCE
UIIA Drayage Carriers
UIIA stands for Uniform Intermodal Interchange and Facilities Access Agreement, the standard contract that governs how motor carriers access intermodal equipment at US container terminals and rail ramps. When a drayage carrier is UIIA-registered, it means they have a signed agreement with the UIIA that allows their drivers to use the shared chassis pools operated at major ports and intermodal facilities across the country. Without this agreement, a carrier cannot legally pick up a container on a leased chassis at most US terminals.
What is the UIIA and why does it matter?
The UIIA was established by the Intermodal Association of North America (IANA) as a standardized framework replacing the dozens of individual bilateral agreements that carriers previously had to maintain with each equipment provider separately. Today, the UIIA covers intermodal equipment providers (IEPs) including DCLI, TRAC Intermodal, Flexi-Van, and others, giving UIIA-enrolled carriers access to chassis pools at hundreds of US locations under a single agreement. The agreement defines the terms under which carriers take custody of chassis equipment, including their responsibility for damage, inspection requirements, and equipment return procedures. When a carrier is UIIA-enrolled, the terminal knows the carrier has accepted these responsibilities and is authorized to use the equipment. Carriers that are not UIIA-registered face significant operational limitations: they can only use their own company-owned chassis (which many drayage companies do not maintain) or arrange separate equipment through a chassis rental company on a per-move basis, which is slower, more expensive, and logistically complex. At high-volume ports like the Port of Los Angeles, Port of New York, and Port of Savannah, the shared UIIA chassis pool is the dominant equipment source. A carrier without UIIA standing is effectively locked out of the most efficient pickup and delivery workflows at these locations. For freight forwarders and shippers, specifying UIIA carriers in your drayage procurement is a basic quality filter that eliminates a class of operational risk before it reaches the terminal gate.
Why freight forwarders and BCOs require UIIA carriers
From a shipper's perspective, specifying UIIA-registered drayage carriers does three things. First, it ensures the carrier has a legal framework in place to use shared chassis equipment, removing a major source of last-minute failure. Second, it signals that the carrier operates at sufficient scale and professionalism to maintain the UIIA enrollment, which requires active FMCSA operating authority and compliance with IANA's carrier qualification standards. Third, it limits your liability exposure: when a carrier is UIIA-registered, the responsibility framework for chassis damage and mis-delivery is clearly defined under the agreement, reducing ambiguity in claim situations. Large beneficial cargo owners (BCOs) and freight forwarders with high container volumes at US ports universally require UIIA membership as a baseline carrier qualification. NVOCC operators booking drayage for their customers also specify UIIA carriers to maintain consistent pickup and delivery SLAs. The UIIA requirement is especially critical at ports where street-turn arrangements (moving a returned empty directly under a new import load without going to a depot) are common, as these transactions require both carriers involved to be UIIA participants to execute legally. At Chicago intermodal rail ramps, BNSF, Union Pacific, Norfolk Southern, and CSX all use UIIA-based chassis pools. A carrier serving Chicago intermodal without UIIA enrollment has no practical way to move most containers efficiently.
UIIA Carrier Requirements
- Active FMCSA Operating Authority: Carriers must hold a valid MC number with active operating authority. UIIA enrollment verifies this as a prerequisite.
- IANA UIIA Enrollment: Carriers must be formally enrolled with the Intermodal Association of North America (IANA) under the UIIA. This is separate from simply knowing about the agreement.
- Equipment Provider Agreements: Carriers must have signed agreements with individual intermodal equipment providers (IEPs) such as DCLI, TRAC, or Flexi-Van at the specific locations where they operate.
- Satisfactory Safety Rating: UIIA-enrolled carriers are expected to maintain a satisfactory or conditional FMCSA safety rating. An unsatisfactory rating triggers review and potential suspension from the program.
How to find UIIA carriers on DrayLocator
DrayLocator indexes drayage carriers across all major US container ports and intermodal hubs, cross-referenced with FMCSA-safer/" style="color:inherit; text-decoration:underline; text-decoration-style:dotted; text-underline-offset:2px;">FMCSA SAFER data refreshed daily. Use the directory filter to browse carriers and verify their operating status before making contact. Each carrier listing shows current FMCSA authority status, fleet size, and any available compliance credentials. For port-specific searches, use the Ports directory to find UIIA carriers near your specific terminal. The carrier detail page shows operating authority, power units, and driver counts pulled directly from FMCSA SAFER, giving you a current snapshot of the carrier's scale and compliance status.
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View all 5,418 ›Frequently Asked Questions
What does UIIA stand for?
UIIA stands for Uniform Intermodal Interchange and Facilities Access Agreement. It is the standard contract administered by the Intermodal Association of North America (IANA) that governs how motor carriers access shared chassis equipment at container terminals, rail ramps, and intermodal facilities across the United States.
Is UIIA enrollment required at all US ports?
UIIA membership is required at most major US container ports and intermodal rail ramps where shared chassis pools operate. This includes the Port of Los Angeles/Long Beach, Port of New York/New Jersey, Port of Savannah, Port of Houston, Port of Seattle/Tacoma, and all major Chicago rail ramps. A handful of ports or terminals that use exclusively street chassis or carrier-provided equipment may not require UIIA, but these are exceptions.
How do I verify a carrier is UIIA-registered?
You can verify UIIA enrollment by asking the carrier for their UIIA enrollment confirmation from IANA, or by checking with the specific intermodal equipment providers at the port where you need service. DrayLocator's carrier listings include FMCSA operating authority status, and carriers with active authority and satisfactory ratings are generally eligible for UIIA enrollment. Always confirm directly with the carrier before booking.
Can a carrier work at US ports without UIIA?
Yes, but with significant limitations. Carriers without UIIA membership must use company-owned chassis, arrange separate chassis rental through a third party, or negotiate direct access with individual terminals. This is slower, more costly, and less reliable than using the shared chassis pool. For high-volume shippers at major ports, a non-UIIA carrier is generally not a viable option for routine drayage.
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