Avenir was designed by
Adrian
Frutiger and issued by Linotype
in 1988. Clean as they come; based on
Erbar
and Futura.
Sebastian
Carterdescribes
it as “oddly restrained” – not as restrained, in my
opinion, as Univers
or the face that carries the designer’s name. See Hunziker’s article
in Serif
6 (Spring 1998, pp 32–43).