Designed for ease and efficiency of reading and to make letters unambiguous by "maximising the distances between forms to allow for easy, clear identification of each character" [0, p. 7]. Compare FE-Schrift [1], which is designed for number plates to make letters unambiguous in the sense of hard to convert one into another by masking or adding parts:
[0] https://github.com/polarsys/b612/blob/master/docs/B612-Leafl...