306.090. 1. It is unlawful for any person to operate a recreationalmotorboat upon the waters of this state in any manner under any condition sothat the recreational motorboat emits sound at a level exceeding eighty-sixdecibels on an A-weighted scale when measured from a distance of fifty or morefeet from the recreational motorboat.
2. This section shall not be construed so as to prohibit use of anyexhaust system or device, including but not limited to those not dischargingwater with exhaust gases as long as the device or system emits sound at alevel in compliance with subsection 1 of this section.
3. The provisions of this section do not apply to motorboats operatedunder permit pursuant to section 306.130, nor to trial runs for a period notexceeding the twenty-four hours immediately preceding a regatta or race, norto official trials in competition for speed records for a period not exceedingthe twenty-four hours immediately preceding a regatta or race.
(L. 1959 S.B. 142 ยง 7, A.L. 1977 S.B. 151)CROSS REFERENCE:
Peace disturbance, RSMo 574.010