file - 03/07/2022
The AAMVA Code Dictionary (ACD) is a set of codes used nationwide to identify:
- The type of driver conviction or
- The reason for a driver withdrawal
ACD codes are used in messages sent over AAMVAnet, which is AAMVA's proprietary, secure computer network that connects to each state driver licensing agency (SDLA) in the 50 U.S. states and the District of Columbia.
The AAMVA ACD manual provides information about the business rules for using the ACD code set in the State Pointer Exchange Services (SPEXS) and in the Problem Driver Pointer System (PDPS). The manual also lists all ACD codes with corresponding descriptions and abbreviations as approved by AAMVA and implemented by each state driver licensing agency in the jurisdictions.
The ACD is supported by the ACD Subcommittee (formerly Working Group), who examines and updates the dictionary set of codes used nationwide by driver licensing authorities. To learn more about the group, visit the ACD Subcommittee page.
Webinars and Training
ACD documentation is available below.
For questions or more information about ACD, please contact us and select Technology Standards from the drop-down menu of subjects.