While not actually a logo per se, I do like the font that appears on all general road signage in the UK that is aptly named 'Transport'.

Even though it's only been in use since the 60s, it's still timeless and iconic.

Said font sometimes also appears on road name signs in some local authority areas (usually in all uppercase lettering), though the one font that commonly appears on those is called 'Octavian' (again, almost always in uppercase lettering).

My local authority (Tamworth Borough Council) currently tends to flip-flop between 'Transport' and 'Octavian' on their road name signage, though the former ('Transport') has usually been TBC's 'default' font on their road name signage for the past 25 years or so, while East Staffordshire Borough Council (which covers Burton) has always used 'Octavian' on their road name signage.