DOT compliance letter, you do not really have to do anything. There are countless DOT compliance facilitators and third-party administrators out there today that send out regular notifications and email correspondence to the transport industry players and every legal/commercial entity that is governed by the FMCSA and Department of Transportation. They work as reminders about your customary deadlines and compliance requirements that you have to fulfill with the federal motor carrier safety administration and the department of transportation to stay compliant throughout the year.