The function of ARL16 (ARF like GTPase 16, Ensembl gene identifier ENSG00000214087) is as follows. Required for the trafficking of ciliary proteins IFT140 and INPP5E from the Golgi to the cilia, thus playing a role in ciliogenesis (By similarity). Suppresses the RNA sensing activity of RIGI in a GTP- dependent manner (PubMed:21233210). {ECO:0000250|UniProtKB:B1ATY8, ECO:0000269|PubMed:21233210}.