Improving communication and information for travelers and making it "excellent" is one of the priorities that the Government has been demanding from Renfe and Adif for years. When a train is late, users often express that getting information and alternatives – or often simply knowing what is happening – is practically an impossible mission. Marina Castellano knows this well. She is from Badalona, has just turned 24, and is a user of Rodalies. She is also a student of mathematical engineering in data science at Pompeu Fabra University. For this reason, when she had to approach her final degree project (TFG), the idea of improving information for Rodalies immediately came to mind "to make life a little easier for users".