The logo and corporate identity are based on the coat of arms of Utrecht. The diagonal red area refers to the story of Saint Martin who cut his cloak in two to share with a beggar, which symbolizes two important brand values for Utrecht, "sharing and connecting".
The U is already widely used in Utrecht. And since the U has the shape of a shield, the link was clear. The idea of "sharing and connecting" was subsequently carried through consistently throughout the corporate identity. There’s a small number of simple rules put in place, which guarantees complete freedom for communication while maintaining recognizability.
The diagonal of the Utrecht coat of arms is the driving force of the style. It resembles a division sign, and as such symbolizes the value of "sharing". Every communication item must use it in some way, but in what way exactly is mostly free. It can divide up colour fields or images in a multitude of ways.