34. GRE took note of the first activities of the Special Interest Group (SIG) on park conditions and an answer-back signal (GRE-85-28). The expert from OICA raised a number of concerns and questions on the issue (GRE-85-31). GRE invited the SIG Co-Chairs (Finland and the Netherlands) to convene additional meetings of SIG with the aim to prepare a proposal for the next session of GRE.