Lundqvistbro

Hello all, I recently joined the TMP community after many hours in SP. I do like the open road and the joy that I get whenever I see someone on the highway or the more rural/non highway roads. I am a bit confused on the etiquette when coming across another person while driving. I’ve seen flashing high beams, honking and at times a mix of both. What is the right/common way to greet each other when passing each other on the road? I’ve been commonly doing a double honk if I’ve been honked to or a reply flash if I’ve been flashed. Thanks, Lund.