Make toll gates with different prices on main roads leading to other areas. And if they don't want to pay, they can use an alternative but longer route to get to their destination.. Yes it would generate probably a low amount of cash, but its better than nothing, and every penny counts, right? And all that cash that is paid, goes straight to the bank.
FYI; It's an idea, do not attack me.
I personally LOVE the idea, I think this could even lead to new RP groups working at the pay tolls..
However, I don't think Corleone Mafia will like pay tolls

