Drug Recognition Expert Data System

Information about the Drug Evaluation and Classification Program and the Drug Recognition Expert Program can be found on the NHTSA and International Association of Chiefs of Police websites at:

• Drug Evaluation and Classification Program, Advanced Roadside Impaired Driving Enforcement Resources

• The IACP International Drug Evaluation & Classification Program

The NHTSA DRE Data System is no longer active. 

FOIA requests for legacy data in the system can be submitted here.

For all other inquires, please contact the NHTSA DRE Data System Helpdesk at dredatasupport@dot.gov.