3.5.1. Working Party on Lighting and Light-Signalling (GRE) (Eighty-third session, 21-24 April 2020)
3.5.2. Working Party on General Safety Provisions (GRSG) (118th session, 30 March-3 April 2020)
3.5.3. Working Party on Passive Safety (GRSP) (Sixty-seventh session, 11-15 May 2020)
3.5.4. Working Party on Pollution and Energy (GRPE) (Eighty-first session, 9-12 June 2020)