The CMS II working group was established in 2013, renewing a mandate from 2009.

The original informal group on camera-monitor systems (CMS) produced a proposal to enable the use of CMS as an alternative to conventional mirrors (document GRSG/2011/23/Rev.1). A decision on this proposal had been pending while the Forum awaited the establishment of an ISO standard on CMS. With the ISO work virtually complete, Germany proposed to reactivate the CMS informal group in order to prepare an updated regulatory proposal for these systems.