Reviews about the effectiveness of motorcycle helmets in preventing injury and death can be found from the Community Guide
Baer, Cook, and Baldi (2005) reviewed and summarized each State’s motorcycle education and licensing programs and practices. A companion report (Baer, Baldi, & Cook, 2005) describes training and licensing programs and actions to promote training and licensing
Under a cooperative agreement with NHTSA, AAMVA updated its Motorcycle Operator Licensing System and Integrating Motorcycle Rider Education and Licensing manuals, by publishing the Guidelines for Motorcycle Operator Licensing. The GMOL provides guidelines for State motorcycle licensing programs (Hanchulak & Robinson, 2009)
NHTSA published a brochure on how to identify noncompliant helmets (NHTSA, 2019b) and provides further information to choose the right fit