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The Department of Homeland Security (DHS) has extended the REAL ID full enforcement date to May 7, 2025.


All driver license offices now operated by Service Oklahoma (formerly operated by the Department of Public Safety and tag agents) continue to be operational and processing business as usual. Visit for more information.

CDL Restrictions - No Cargo in CMV Tank Vehicle

A CLP holder with an “N” endorsement may only operate an empty tank vehicle and is prohibited from operating any tank vehicle that previously contained hazardous materials that has not been purged of any residue. (You cannot test in a vehicle that is placarded for hazmat whether it has been purged or not per Oklahoma Administrative Code (OAC) 595:11-3-7 and 595:11-3-8).

Last Modified on Oct 05, 2020
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