Transitional Provisions 24.1. As from the official date of entry into force of the 01 series of amendments to this Regulation, no Contracting Party applying this Regulation shall refuse to grant or refuse to accept type approval under this Regulation as amended by the 01 series of amendments. 24.2. As from 12 months after the date of entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation shall grant approvals only if the type of components to be approved meets the requirements of Part I of this Regulation as amended by the 01 series of amendments to this Regulation. 24.3. Type approvals of components other than fuel rail, as defined in paragraph 4.72., granted according to the original version of this Regulation or of components granted according to the 01 series of amendments, shall remain valid and shall be accepted for the purpose of their installation on vehicles as long as the requirements for the specific component have not changed by any series of amendments. 24.4. As from 18 months after the date of entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation shall grant approvals only if the vehicle type to be approved meets the requirements of Part II of this Regulation as amended by the 01 series of amendments to this Regulation. 24.5. Until 12 months after the date of entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation can continue to grant type approvals for the type of components to the original version of this Regulation without taking into account the provisions of the 01 series of amendments. 24.6. Until 18 months after the date of entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation can continue to grant type approvals for the vehicle type to the original version of this Regulation without taking into account the provisions of the 01 series of amendments. 24.7. Notwithstanding the provisions of paragraphs 24.5. and 24.6., Contracting Parties applying this Regulation shall not refuse to grant extensions of type approvals for existing types of component or vehicle types which have been issued according to this Regulation without taking into account the provisions of the 01 series of amendments to this Regulation. 24.8. As from the official date of entry into force of the 02 series of amendments to this Regulation, no Contracting Party applying this Regulation shall refuse to grant or refuse to accept type approval under this Regulation as amended by the 02 series of amendments. 24.9. As from 1 September 2017 Contracting Parties applying this Regulation shall grant approvals only if the type of components to be approved meets the requirements of Part I of this Regulation as amended by the 02 series of amendments to this Regulation. 24.10. As from 1 September 2018 Contracting Parties applying this Regulation shall grant approvals only if the vehicle type to be approved meets the requirements of Part II of this Regulation as amended by the 02 series of amendments to this Regulation. 24.11. As from 1 September 2019 Contracting Parties applying this Regulation may refuse to recognize approvals of a type of vehicle which have not been granted in accordance with Part II of this Regulation as amended by the 02 series of amendments to this Regulation. 24.12. Contracting Parties applying this Regulation shall not refuse to grant extensions of type approvals for existing types of component or vehicle types which have been issued according to this Regulation without taking into account the provisions of the 02 series of amendments to this Regulation. 24.13. Notwithstanding paragraphs 24.11. and 24.12., Contracting Parties applying this Regulation shall continue to accept type approvals granted to the preceding series of amendments, which are not affected by the 02 series of amendments.