| WP.29-171-26 | Report to WP.29 about results of the 6th meeting of Informal Group on Periodical Technical Inspections | |
| WP.29/2017/49 | Proposal for amendments to the 1997 Agreement | |
| WP.29/2017/50 | Proposal for a Resolution on the administrative and technical provisions required for carrying out the technical inspections according to the technical prescriptions specified in UN Rules | |
| WP.29-171-21 | Proposals for new Rule on Periodical Technical Inspections of motor vehicles using Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) in their propulsion system | |
| WP.29-171-20 | Proposal to amend the draft amendments to the 1997 Agreement presented in document WP.29/2017/49 | |
| WP.29/2017/49 | Proposal for amendments to the 1997 Agreement |