Sec. 6. (a) A TNC shall establish and enforce a zero tolerance policy for drug and alcohol use by TNC drivers during any period when a TNC driver is engaged in, or is logged into the TNC's digital network but is not engaged in, a prearranged ride. The policy must include provisions for:
(1) investigations of alleged policy violations; and
(2) suspensions of TNC drivers under investigation.
(b) A TNC shall publish on the TNC's digital network:
(1) the policy established under subsection (a); and
(2) the procedure by which a TNC rider may report a violation of the policy by a TNC driver.