One of my lasting contributions to the roadgeek community was the packaging of a set of fonts closely approximating those used on highway signs: the Roadgeek Fonts (click to download).
the license in the ZIP file for details, but essentially they're free
for hobbyist use. They are NOT to be used for commercial, publication,
or actual sign-making purposes.
you ask: I have no plans to rerelease the fonts as open source. I am
not planning on any further development of the fonts. I don't even have
the software to edit the files installed any more.