HELVETICA

While working on my graphics for this project, I have to pick everything that goes into it- line type, line weight, paper size, paper texture, transparency etc.

The choice of font is a no-brainer, since I will just use what the subway system uses in all of their signages- HELVETICA. In fact, there is a whole documentary about this typeface:

A glimpse at the wonderful documentary (2007) by Gary Hustwit: http://www.helveticafilm.com/about.html Own the film for $10: http://itunes.apple.com/us/movie/helvetica/id284740710

There is also a book about it: