Fame
It might seem like a no-brainer that there's no such thing as a famous toll taker. However, if you count Inside Edition as fame, there might be the occasional human-interest piece that gets you known outside the walls of your booth. The only other famous toll taker who comes to mind, though, is the inimitable Sonny Koufax from Big Daddy. But he's not real.
Realistically, most people with this job end up being totally anonymous—and, hey, that might be just what you're looking for.