I`m developing a comercial app and I'm going to include some information about racetracks to it. I'm going to use follow information: a name of racetrack, a distance of one lap, names of turns. The app isn't a game.
I couldn't find any rules for using racetraks names. Some racetrack like Nürburgring belongs to commercial firms, so it names can be trademarks. What about are racetracks belong to goverments? Should I ask about licens for it?