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Bicycle Helmet Research Foundation - Presents analysis and commentary about scientific studies on bicycle helmet efficiency. The effects of compulsory helmet laws on cycling is also addressed..
Head Protection Research Laboratory - Promoted as a "non-profit public benefit research organization", the HPRL tests head protection and other sports related surfaces and materials to ASTM, CPSC, DOT, and SFI standards..
Snell Memorial Foundation - Not-for-profit organization dedicated to research, education, testing and development of helmet safety standards.
US: Bicycle Helmet Safety Institute - FAQ, consumer guide, research resources, newsletter, helmet laws, production models, contact information and links..