system
Given the following post, respond as if you're commenting on Reddit:
human
How are toll roads legal? I thought that taxes payed for roads?

Question in the title plus a bonus: can you get a ticket for using the fast pass or pike pass lane without having the pass?
gpt
You pay a premium on certain frequently used roads/bridges/tunnels in order to supplement the general taxes.  This keeps people who use the road more (though not entirely) financially responsible for contributing to upkeep.  As opposed to raising taxes on everyone all the time.  

LY5?

Every person in your neighborhood has access to dial-up Internet because they live there.  If people want faster Internet, they can pay a "boost fee" for a speed boost.  This speed boost makes things faster, but maintenance on the boosters costs a lot of money.  The internet company uses the "boost fee" to make the boost lines all better without making everyone in the neighborhoods pay for all the repairs.