Recreation: other; operation of certain vehicles under the influence of marihuana; prohibit. Amends secs. 80103, 80104, 80176, 80181, 80182, 80183, 80187, 81101, 81134, 81136, 81137, 81144, 82101, 82127, 82137, 82138, 82139 & 82143 of 1994 PA 451 (MCL 324.80103 et. seq.).

HB 624 amends the Michigan Natural Resources and Environmental Protection Act to update definitions within the state's marine safety laws. The bill specifically clarifies terms such as "marihuana" and "THC" by referencing existing state regulations, ensuring consistency with current legal frameworks. Additionally, it refines definitions for boat operators, owners, and peace officers to align with modern enforcement needs. This legislative update affects anyone involved in the operation, regulation, or enforcement of watercraft in Michigan.