As I understand it, freight carriers apply for Standard Carrier Alpha Codes (SCACs) through the National Motor Freight Traffic Association. Once they are granted, they are passed to the DOT.
The DOT should make available all of the presently registered SCACs, and provide updates at a reasonable frequency (bi-weekly or monthly).
Voting on Ideas
Vote for your favorite ideas by clicking on the up arrow.To undo an upvote, simply click the arrow again. This second click removes your vote.