In freight transportation, container logistics, and drayage operations, one key identifier continues to play a vital role in ensuring visibility and compliance: the Standard Carrier Alpha Code® (SCAC)®.
But not all SCACs are created equal.
In particular, there’s a distinct difference between the SCAC assigned to a carrier (such as a motor carrier or ocean carrier) and a SCAC ending in the letter “U”—explicitly used to identify containers and intermodal equipment. Understanding which SCAC your organization needs is essential for avoiding compliance issues and ensuring smooth operations.
Moving freight?
You need a standard carrier SCAC.
Managing Containers?
You need a SCAC ending in “U.”
Two Codes, One Acronym
Carrier SCAC: Identifies a company
What it identifies:
The transportation company—a motor carrier or ocean carrier.
Who needs it:
Any business that moves freight.
Where it’s used:
Carrier identification in customs filings, tracking systems, and tariffs worldwide.
Container SCAC: Identifies Equipment
What it identifies
The owner of an intermodal container or piece of equipment—not a carrier.
Who needs it
Companies that own, lease, or manage containers.
Where it’s used
Manifesting, customs filing, and equipment interchange at ports, rail yards, and terminals.
Who Needs a SCAC Container Code (Ending in “U”)?
SCACs ending in “U” are not for carriers—they are used to identify the owners of intermodal containers and equipment. These container SCACs are recognized internationally and are often used in U.S. Customs systems, port terminals, and global container tracking platforms.
Typical stakeholders who may need a container SCAC include:
- Ocean carriers and vessel operators;
- Intermodal Equipment Providers (IEPs);
- Shippers (especially those who own or lease containers);
- Drayage and port trucking companies;
- Logistics providers and third-party logistics providers (3PLs);
- Freight forwarders; and
- IT Teams managing booking or equipment tracking systems.
If your company owns, leases, or manages containers, this container “U” code is crucial for manifesting, customs filing, and equipment interchange at ports, rail yards, and terminals.
Where It Applies: Domestic vs. International Use of Container Codes
Domestic Use:
Container SCACs are widely used in rail and intermodal operations, especially when transferring containers between trucks, railcars, or depots. U.S. Customs and terminal systems often require this code for visibility and tracking.
International Use:
You need a BIC Code.
For containers in international service, owner identification is governed by ISO 6346, which requires the owner code to be registered with the BIC (Bureau International des Containers) so it is unique worldwide—this is known as a BIC Code. The international customs conventions reference this registration, and it’s what appears in booking systems, advance manifests, and global tracking platforms. A domestic-only code is not a substitute.
Purchasing a Container SCAC “U” Code: What to Know
Applying for a SCAC with the National Motor Freight Traffic Association, Inc. (NMFTA)™? It’s essential to understand that purchasing a container SCAC (ending in “U”) differs from buying a standard carrier SCAC.
When completing the application through NMFTA:
- Only check the box for a container “U” code if you are certain your company owns, operates, or manages containers that require unique identification.
- Selecting this option incorrectly can lead to delays, confusion, or issuance of a code your business doesn’t need.
For an international container code through the Bureau International des Containers:
- If you require an International Container Code (BIC Code), please click this link to register: Apply for a BIC Code | Bureau International des Containers
If you’re unsure whether your company qualifies, we recommend checking with your compliance team or contacting NMFTA directly before proceeding.
Conclusion
A SCAC is more than just an industry formality—it’s a critical identifier used by Customs, terminals, carriers, and tracking systems worldwide. If you’re moving freight, you’ll likely need a standard SCAC. If you manage containers, particularly in the intermodal or ocean freight space, you’ll need a SCAC ending in “U.”
To apply for or renew a SCAC or Domestic container code, always use the official NMFTA website: www.scaccode.com.
To apply for or renew an International Container Code (BIC), use the official BIC website: BIC: Bureau International des Containers.
For more SCAC resources, visit www.nmfta.org/scac-resources.
