36. The expert from the Netherlands proposed to extend the scope of UN Regulation No. 18 to vehicles equipped with propulsion systems using CNG (ECE/TRANS/WP.29/GRSG/2014/13). GRSG noted a number of comments and agreed to resume consideration of this subject at a later session awaiting the outcome of deliberations on the automatic fire suppression systems into UN Regulation No. 107 (see para. 10 above) and the proposed directional discharge of the pressure relief devices of GNG containers under UN Regulation No. 110 (see para. 32).