(a) Every employer shall comply with the requirements of this section. Every driver shall submit to random alcohol and controlled substance testing as required in this section. (b) (1) Except as provided in paragraphs (c) through (e) of this section, the minimum annual percentage rate for random alcohol testing shall be 10 percent of the average number of driver positions. (2) Except as provided in paragraphs (f) through (h) of this section, the minimum annual percentage rate for random controlled