Sec. 545.365.  SPEED LIMIT EXCEPTION FOR EMERGENCIES;  MUNICIPAL REGULATION.  (a)  The regulation of the speed of a vehicle under this subchapter does not apply to:
(1)  an authorized emergency vehicle responding to a call;
(2)  a police patrol;  or
(3)  a physician or ambulance responding to an emergency call.
(b)  A municipality by ordinance may regulate the speed of:
(1)  an ambulance;
(2)  an emergency medical services vehicle;  or
(3)  an authorized vehicle operated by a blood or tissue bank.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.