Vehicles; motorcycles; requirement of wearing crash helmets; increase penalty, create exception, and provide for a no-helmet permit and sticker under certain circumstances. Amends secs. 312a, 658 & 907 of
1949 PA 300 (MCL
257.312a et seq.); adds secs. 658c & 658d & repeals secs. 658c & 658d of
1949 PA 300 (MCL
257.658c &
257.658d).