BS 6658:1985

Committees responsible
Foreword
1 Scope
2 Definitions
3 Classification
4 Materials
5 Construction
6 Performance
7 Flammability (optional)
8 Marking
9 Information to users (labels)
Appendix A Recommended method for assessing ageing of
           helmet shell materials
Appendix B Extent of shell and peripheral vision
Appendix C Recommendation on minimum radii for
           thermoplastics materials
Appendix D Solvent conditioning
Appendix E Conditioning before testing
Appendix F Shock absorption test
Appendix G Penetration test
Appendix H Test for effectiveness of retention system
Appendix J Test for strength of retention systems with chin
           straps
Appendix K Test for chin strap slippage
Appendix L Test for resistance to abrasion of the chin strap
Appendix M Test for strength of retention systems without
           chin straps
Appendix N Test for resistance to inertial release of
           quick-release mechanism, or "buckle"
Appendix P Test for durability of quick-release mechanism
Appendix Q Oblique impact test
Appendix R Test of chin guard
Appendix S Test for flammability

Specifies requirements for helmets for riders, drivers and passengers of motor vehicles including participants in competitive events, for whom a high-performance option is included.

This British Standard specifies requirements for helmets to be worn by riders, drivers and passengers of motor vehicles, including participants in competitive events. Requirements for accessories such as visors, goggles, detachable peaks and detachable face covers are not specified unless they are supplied with the helmet as original equipment. Eye-protectors are specified separately in BS 4110. Requirements and the corresponding methods of test are given for: extent of shell; shock absorption properties; penetration resistance; response to oblique impact; strength of chin guard; strength and effectiveness of retention system. In addition, a method of testing flammability is given for helmets for which compliance with the optional flammability requirement is claimed (see clauses 7 and 8). A recommended method for assessing the resistance of helmet shell materials to ageing is also given. NOTE The titles of the publications referred to in this standard are listed on the inside back cover.