Friend from Canada (who cycled from Vilnius to Warsaw) would give short honks to cyclists as some sort of appreciation or something. I thought it’s kinda annoying for cyclists!

Here in NZ will honk (or even call police) if you drive middle of the road - visibility behind corners isn’t great and tourists often confuse where they should drive. Whereas it’s fairly common to drive in the middle in Lithuania - sometimes it has better road surface.