140. The representative of the US introduced a proposal to develop a UN GTR on quiet road transport vehicles (WP.29-155-42) and indicated that his country and Japan had volunteered to be the technical sponsors, with the US chairing the informal working group under GRB. He indicated that the EU has been invited to co-sponsor the UN GTR. He proposed to update the proposal before submitting it for consideration at the March 2012 session of AC.3. The proposal, which would cover the presence, location, direction and operation of vehicles for visually impaired road users, received general support. The Chair of GRB stated that GRB expertise did cover all the above-mentioned matters with the exception of safety related matters. The representative of the US suggested that the group of GRB experts could be completed by adding safety experts from GRRF, GRSG and GRSP, if necessary. AC.3 agreed to inform the experts of these Working Parties about the development of the UN GTR, inviting them to participate at its sessions.