49 C.F.R. § 383.155 Tamperproofing requirements.
Title 49 - Transportation
States shall make the CDL tamperproof to the maximum extent practicable. At a minimum, a State shall use the same tamperproof method used for noncommercial drivers' licenses.
Title 49: Transportation
PART 383—COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES
Subpart J—Commercial Driver's License Document
§ 383.155 Tamperproofing requirements.
