Summerville Police arrested a passenger in a vehicle after a traffic stop on Highway 48.  According to a report released late last week, police pulled over a vehicle that was driving erratically.  Officers told the driver that they were concerned about her driving.  The driver, identified as Bonnie Reynolds told officers her license was expired.  As police were talking with the passenger, identified as Courtney Stallings, she admitted to having used methamphetamine that day.   Stallings also turned over a clear plastic bag with suspected methamphetamine to officers.  Stallings was arrested on drug possession charges and booked into the Chattooga County Jail.