It's only been a year since he was appointed director of the Autoritat del Transport Metropolità. Before that, Manuel Valdés - an engineer by training - had spent 17 years at Barcelona City Hall, where he promoted the new bus network, the low-emission zone, the superblocks and the tram along the Diagonal. All this experience, he says, has helped him to delve into the "engine room" that is the ATM: "In the morning I want to see the message that everything is working normally."