Avoid Getting Turned Away at the Port: Why You Need a SCAC Code Before You Arrive

Don’t get denied at the gate. Learn why every port and intermodal carrier needs a SCAC code

Picture this: You’ve driven hours to the terminal, paperwork in hand, but the gate guard says, “You’re not in the system.” 

Without a valid Standard Carrier Alpha Code® (SCAC®), your truck—and your shipment—aren’t going anywhere. 

What Is SCAC? 

A SCAC is a unique two-to-four-letter identifier assigned by the National Motor Freight Traffic Association, Inc. (NMFTA) to transportation companies operating in the United States (U.S.).  

It’s more than just a code; it’s your key to operate, access ports, and be recognized by shippers, brokers, and customs systems. 

A valid SCAC is required to: 

• Identify carriers in U.S. Customs filings;  

• Facilitate Electronic Data Interchange (EDI) transactions; and 

• Grant terminal and port access for freight pickup and delivery. 

What Happens If You Don’t Have One? 

Showing up at a port without a valid SCAC can lead to: 

• Gate Denial: Most U.S. ports and intermodal terminals won’t let you in without it. 

• Customs Delays: No SCAC means no clearance for your cargo, and your freight stays put. 

• Appointment Rejection: Terminals may refuse to load/unload your freight. 

Bottom line: No SCAC, no access. 

What to Do Before You Arrive at a Port or Intermodal Terminal 

Here’s what every driver, dispatcher, and carrier should do before heading out:  

1. Confirm Your Appointment 

• Double-check gate time, terminal location, and entry instructions. 

2. Prepare Your Paperwork 

• Bill of Lading (BOL); 

• Delivery or pickup reference number; and 

• Any special shipper/receiver instructions. 

3. Verify Your Credentials 

• Valid driver’s license; 

• Transportation Worker Identification Credential (TWIC) card (if required); and  

• Company ID or carrier credentials and active SCAC. 

If your company operates under another carrier’s authority, confirm their SCAC is active and listed correctly. 

Where to Get a SCAC 

• NMFTA: Apply at scaccode.com — the official NMFTA application site. 

• Carrier or Dispatch Team: They should have your company’s SCAC. 

• Broker or Terminal Communications: Often include SCAC requirements. 

Bottom Line 

Before you roll up to the port, make sure your SCAC is: 

• Registered, active, and correctly listed on all documentation. 

• Ensure your team (dispatchers, brokers, drivers) uses the same SCAC consistently. 

It’s a small code with big consequences—don’t leave it to chance. 

You Might Also Be Interested In: 

• Carrier SCAC vs Container SCAC Ending in “U”: What’s the Difference? 

• Nearshoring: What Carriers Need to Know About Transporting Freight Across the Mexican Border, Ease of Crossing, and Cargo Theft Prevention 

• Top 5 SCAC Mistakes That Delay Freight, And How to Avoid Them 

• How to Renew Your SCAC—and What Happens If You Don’t