Document addresses an apparent contradiction between transitional provisions 15.1.2. and 15.1.3. in the 06 series of amendments to UN R22 on helmets and article 12.4 of Revision 3 of the 1958 Agreement. The IWG on IWVTA provides preliminary answers confirming that provisions of the 1958 Agreement should generally prevail over UN Regulation provisions, and the transitional provisions are in contradiction with article 12.4 and should be reconsidered unless considered necessary exceptions. Article 12.4 allows Contracting Parties to issue type approvals pursuant to earlier versions of UN Regulations, with the freedom to accept or reject such approvals remaining with each Contracting Party.