(a) A vehicle used by a medical supply distributor to transport prescription drugs and other medical supplies to an emergency care facility, pharmacy, or nursing home located in an area declared a disaster area by the governor under Chapter 418, Government Code, may have access to highways, streets, and bridges as if the transport vehicle were an emergency vehicle if the transport vehicle will not negatively impact evacuation activities or any response or recovery activities in the disaster area.
(b) The Texas Division of Emergency Management shall establish procedures to assist medical supply distributors in accessing highways, streets, and bridges as authorized by Subsection (a).

(c) This section does not create a cause of action against a law enforcement officer involved in assisting a medical supply distributor under this section for any harm done to the distributor resulting from that assistance.