The Drug Impaired Driver
Discussion of drug recognition training and the symptoms of various classes of drugs/narcotics, from L.A.P.D.'s nationally-known Drug Recognition Unit.
RxList: The Internet Drug Index
Search engine for information about prescription drugs. (Note: contrary to popular belief, it is unlawful to drive under the influence of legally-prescribed drugs.)
Extensive index of characteristics and symptoms of narcotics and illegal drugs.
Driving Under the Influence of Drugs/Narcotics