| http://www.w3.org/ns/prov#value | - All head and neck restraint devices must be certified by the SFI Foundation. 29 December, 2005 - NASA Lists Approved H&N Restraints, Warns of Coming Mandate - The National Auto Sport Association has released its 2006 Club Codes and Regulations, including the statement that, It is expected that use of a head and neck restraint system or device, meeting SFI 38.1 will may become mandatory for all ro
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