Based on your reasoning, I'll revert my changes. I'll change everything to how it was before; if you see something I forgot, please change it. Thanks for your response!

Hello,
According to the definitions, I've found the subway better as a classification than the light_rail. I could be wrong but the subway is a type of train that has its own rails without sharing them with a street. What are the reasons for thinking the "Metro de Palma" is a light_train?