Presentation of the recommendations (see document GRRF/2014/16) of the expert group reviewing the transitional provisions of UN R13-H pursuant to the decision to transfer the provisions on the electronic stability control (ESC) warning signal to UN R121 on controls and tell-tales. UN R13 contains eight transitional provisions (five of which are obsolete) introduced to allow manufacturers to adapt to changes that have been made to the rule over time. The ad hoc expert group was formed to streamline these provisions by removing obsolete provisions and by applying uniform language.