The Working Party on Passive Safety discussed a proposal to delete transitional provisions 15.1.2. and 15.1.3. from UN R22 on the basis that they contradicted article 12.4. of revision 3 of the 1958 Agreement. GRSP concluded that in case of contradiction between the provisions of Revision 3 of the 1958 Agreement and those of UN R22, the provisions of the 1958 Agreement should prevail. This interpretation matter is being brought to the attention of WP.29 because it may affect other UN Regulations with similar provisions under the purview of other subsidiary working parties. GRSP requested guidance on the correct interpretation of transitional provisions 15.1.2. and 15.1.3.