33. In absence of the expert from Belgium, the expert from France informed GRSP that the Working Party on General Safety Provisions (GRSG), would consider ECE/TRANS/WP.29/GRSP/2016/7 at its April 2017 session, which discusses additional safety provisions for electrical safety of trolleybuses addressed in UN Regulation No. 107 (M2 and M3 vehicles) instead. Therefore, GRSP agreed to defer discussion to its May 2017 session awaiting the outcome of GRSG at its next session and possible requests of adapting Regulation No. 100.