Proposal to modify UN R125 in line with the proposed amendment to UN R46 (indirect vision) that introduces the use of camera-monitor systems (CMS) in place of rear-view mirrors (i.e., document GRSG/2015/2). This proposal is part of a package of proposals to amend the UN Regulations impacted by the amendment to UN R46 and would extend the provisions for rear-view mirrors to CMS devices.