49 C.F.R. § 383.151 General.
Title 49 - Transportation
The CDL shall be a document that is easy to recognize as a CDL. At a minimum, the document shall contain information specified in §383.153.
Title 49: Transportation
PART 383—COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES
Subpart J—Commercial Driver's License Document
§ 383.151 General.