14. The expert from the United States of America made a presentation (GRSP-49-28) to introduce the draft gtr (GRSP-49-13) on hydrogen and fuel cell vehicles (HFCV) prepared by the special group safety (SGS). The expert from the United Kingdom urged clarification on the colors of tell-tales and suggested taking into consideration similar provisions already adopted for other gtrs. GRSP noted that the next meeting of the informal group SGS was scheduled to be held in the last week of June 2011 in Paris at OICA’ s office. Due to the tight deadline of the new work plan (see ECE/TRANS/WP.29/1089, para. 103), GRSP invited all interested experts to attend the meeting of the informal group and to provide comments on GRSP-49-13 to the co-chairs of the informal group by July 2011, before the deadline for submission of official documents to the December 2011 session of GRSP.