Okay, we said we'd leave the structure to other professionals, like corporate attorneys — and we will. However, to structure as a division or a subsidiary is an important distinction for DOT compliance. A subsidiary is its own legal entity meaning that it must also have its own USDOT number to track safety and compliance. That means separate driver files, drug and alcohol testing programs, ELDs, vehicle inspections, violation tracking, and compliance reviews to name a few. If you don't want the separation and you want to keep the "brand," consider an asset only acquisition and use the old name as brand name as a division name. A division does not have a legal entity identifier like an employer identification number (EIN or FEIN). A division needs to operate under the company's USDOT number and compliance program. If the brand name or doing business name (DBA) is included on the MCS-150, the vehicles can be branded as predominately as desired with the acquiring company's USDOT number.