The Los Angeles Police Department has developed a Drug Recognition Expert (DRE) training program. In 1985 a field study was held in which over a 12 week period all drivers under the influence of drugs (DUID) city-wide were evaluated. If in a DRE' s opinions, the driver was under the influence of a drug, he was asked to provide a blood sample Results of detected drugs, characteristics of DUID' s and DUID' s driving behaviour are given.
Abstract