If you want to look like TV Guide, www.fontfactory.com has a font
family called Interstate, which includes 40 styles. This is likely the
family used commercially on magazine and tabloid covers, as well as by
The Weather Channel, The History Channel, and NBC Sports broadcasts
(excluding, ironically, auto races). All 40 styles of the font,
licensed for one computer, including bulk discount, comes to $600 if
memory serves me. Despite the cost, this would be your best bet if you
want this font in a lot of variations (width, weight, slant) and don't
care a whole lot about authenticity.
If you want to replicate road signs, check out www.triskele.com/fonts .
This guy has recently released a large set of freeware fonts,
including 6 tradtional FHWA series ("series" is roadgeek for a
particular font style), 13 Clearview series (replacing the FHWA series
in places like rural Pennsylvania, metro Detroit, Toronto, and Texas,
to name a few) as well as a few European road sign fonts and a couple
of symbol sets. This is the most authentic font set you can get for
free, but (due to its authentic nature) mostly lacks weight and slant
variations. Also, the character spacing is somewhat inconsistent
between series, probably based on the most frequent spacing used with
each particular series on actual road signs.
www.larabiefonts.com has a font called Blue Highway. There are 3 free
styles: normal, bold, and condensed. The site offers more variations
for a small price ($14 if memory serves), but not too many. You
*could* replicate a road sign with it, but it wouldn't fool many
roadgeeks. You *could* publish a magazine with it, but you'd quickly
find yourself wishing for more variations.