Our last post covered the similarities and differences between a DUI involving alcohol and a DUI involving drugs. Today's post explains the role of the Drug Recognition Expert (DRE) in DUID.
Typically, a DUID evaluation begins after a driver has been pulled over for erratic driving and the officer, after administering a breath alcohol test, determines that the driver has not ingested alcohol.
In DUID cases, law enforcement relies on two things: 1) blood or urine tests to determine if drugs are present in the person's system, and 2) observations of the person's physical condition and behavior. Because of the technical nature of this type of investigation and evidence, police and the CHP rely on Drug Recognition Experts, or DREs, officers who receive special training in recognition of the influence of drugs.
The DRE follows a 12-step protocol to assess the situation:
- Breath alcohol test
- Interview of the arresting officer
- Preliminary examination and first pulse reading
- Eye examination
- Divided attention psychophysical tests similar to field sobriety tests
- Vital signs and second pulse reading
- Examination of eye pupils
- Examination of muscle tone
- Check for injection sites and third pulse reading
- Subject's statements and other observations
- Analysis and opinions of the evaluator
- Toxicological examination from urine, blood, or saliva
If the officer making the traffic stop is trained as a DRE, he simply follows the 12-step protocol. If he isn't a DRE, he calls for one to come to the scene to conduct the investigation. The DRE's evaluation is then used by the district attorney's office in its attempt to gain a conviction.
If no DRE is available, the arresting officer takes detailed notes of what he observed. If the case goes to trial in that instance, the district attorney can have a DRE testify as an expert witness and give his or her interpretation of the arresting officer's notes. But without direct evaluation by a DRE, conviction of DUID becomes much more difficult.
All of the issues highlighted in the previous post regarding defense against DUID charges are pertinent to the DRE's evaluation. The rate at which drugs leave the system, impairment through use of medications, the role of fatigue and emotional distress, and inconsistencies in the application of the 12-step protocol by the DRE should all be evaluated by your attorney in devising a defense strategy.