Tranquillo is an Italian word with a dual meaning.  Firstly, it literally means peaceful, calm, tranquil.  Secondly, it's an everyday term used to say 'don't worry' or 'no bother'. But it has a deeper meaning for cyclists.  In cycling terms it's the relaxing moments the peloton enjoys before the real racing starts.  The time when riders can look up and appreciate the beauty in their surroundings. The moments when they can chat and share a joke with each other.  These fleeting moments are scarce and highly valued.  Cycling is a hard sport.  It requires total sacrifice and frequent suffering.  No wonder cyclists enjoy their brief moments of Tranquillo.