30. The expert from IMMA introduced a proposal allowing for the use of different brake lamp activation methods and aligning the brake lamp provision with those applicable for four-wheelers (ECE/TRANS/WP.29/GRE/2015/42). The experts of France, Germany, Italy and Japan delivered remarks. GRE noted that this proposal might need to be accompanied by a modification of Regulation No. 78 under the responsibility of the Working Party on Braking and Running Gear (GRRF). IMMA was invited to contact GRRF and to present an updated document for the next session.