DRE / ARIDE
Predictive Validity of DECP
IACP · 1.7 MB
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Predictive Validity of DECP is a IACP's primary-source document. It documents the 12-step Drug Recognition Expert protocol and the IACP standards behind a drug-impairment opinion. Because it is the government's own source material, it sets the standard a DUI case can be measured against — not a standard the defense invented.
What this document establishes
It sets out the 12-step Drug Recognition Expert protocol and the IACP standards behind a drug-impairment opinion. As primary-source material, it lets you compare what actually happened in a case against the written standard, rather than relying on how the procedure is described in court.
How it's used in a DUI defense
In drug-DUI cases the 12-step DRE protocol is the state's roadmap — and its weakest link. Every step the evaluator skipped or shortcut is a foundation challenge, and the published critiques of DRE accuracy and confirmation bias go directly to the weight a fact-finder should give the opinion. Holding the evaluator to each documented step of the protocol is the core of the cross-examination.
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