26. The expert from Switzerland, in his role as GRBP ambassador, introduced GRSG-117-04 highlighting discussion on the scope and on the installation of a pause switch which was considered feasible in cases where a Camera-Monitor-System (CMS) would be active. GRSG noted that the use of CMS could be hampered in cases where vehicles were used in combination with trailers and therefore recommended that, in such cases, the pause switch shall be inactive.