Any person is disqualified from driving a commercial motor vehicle for a period of one hundred twenty days if convicted during any three-year period, while driving a commercial motor vehicle, of a second conviction or any combination of convictions of § 32-29-4 , 32-29-5 , 32-29-7 , 32-29-8 , 32-29-9 , or 32-29-12 in separate incidents. Source: SL 2002, ch 156 , § 2; SL 2007, ch 182 , § 16; SL 2013, ch 149 , § 4.