A traffic accident on I-84 near the Twin Falls exit yesterday morning has resulted in the arrest of a Boise man on drug charges.  22 year old David Lillard crashed his car into the rear of a semi-truck shortly after 7 o’clock Tuesday morning in the eastbound lane of I-84 about a mile east of the exit.  Idaho State Police say Lillard’s car got pinned under the trailer’s rear bumper.  The crash blocked one lane of the interstate for over three hours.  Lillard was arrested for possession of a controlled substance and drug paraphernalia, having an open container of alcohol in the vehicle and inattentive driving.  Both Lillard and a passenger, Stormie Todd of Nampa, were treated for minor injuries at a local hospital.