Section 257.658b - Crash helmet required; exception(1) Except as provided in subsection (2), a person operating or riding in a low-speed vehicle shall wear a crash helmet on his or her head. The crash helmet shall meet the requirements of the rules promulgated by the department of state police under section 658.(2) Subsection (1) does not apply to a person operating or riding in a low-speed vehicle equipped with a roof that meets or exceeds the standards for roof-crush resistance, provided under 49 C.F.R. 571.500.Add. 2000, Act 82, Eff. 7/1/2000.