A Trenton man remains in the Adair County Jail this morning after being arrested by the Highway Patrol. According to the arrest report, Matthew J. Edwards, 23, was stopped for failure to drive on the right half of roadway. He is alleged to have been in possession of a controlled substance – methamphetamine, possession of less than 35 grams of marijuana, unlawful use of drug paraphernalia, driving while intoxicated by drugs as well as the lane violation.