RE:R.I.D.E.Yes they are, and more importantly, they have been for years. It started in San Diego. Hilton has many officers trained in the road side testing for drugs, and it all stands up in court.
Further, turn on the TV, they've, (MADD, gov't, cops) have been advertising like gang busters lately. Google madd site or drug road side, in depth explanations all over.