Sec. 31.072.  RACING BOATS;  EQUIPMENT EXEMPTIONS.  (a)  A motorboat designed and intended solely for racing need not have a whistle or other sound-producing mechanical appliance or a bell as required by Section 31.065 of this code or a fire extinguisher as required by Section 31.067 of this code while competing in a race or while engaged in navigation that is incidental to tuning up for a race conducted in accordance with the provisions of this chapter.
(b)  A racing craft engaged in a race sanctioned by the governing board of any public water of this state need not have an exhaust water manifold or factory-type muffler installed on the engine as required by Section 31.070 of this code if written permission is granted by the governing board of the water body.
Acts 1975, 64th Leg., p. 1405, ch. 545, Sec. 1, eff. Sept. 1, 1975.