55. The expert from GTB introduced GRE-69-39, reporting on the exchange of view between GTB and the National Highway Traffic Safety Agency (NHTSA) on new headlighting technologies. He introduced GRE-69-40, a status report of the activities of the GTB task force dealing with COP requirements and Regulation No. 123. He introduced GRE-69-41 reporting on the feasibility study on performance based requirements and the rationales for excluding the Light Source Regulations from the study. He also reported on the feasibility of LED retrofit, listing the challenges expected and calling for input and guidance by GRE.