20-Year Prospect
We don't mean to hammer this into your skull, but if you're still reading, this is the part where we warn you one last time that the long-term prospects for this job are very bad. Apocalyptic, in the sense that complete and utter destruction of this position is likely to happen within twenty years.
Unless you're obsessed with the idea of a research project that requires survey-sampling the millions of drivers who pay tolls during their travels, you should really look elsewhere for long-term opportunities.