I overpaid a traffic ticket. I don’t get a refund. Hennepin County traffic tickets, it turns out, can be overpaid by up to \$5 and there’s no way to get a refund. The computer, you see, is willing to approximate. If you pay anything within \$5 of the ticket price, either way, your ticket is closed out.
According to the nice lady on the phone, Hennepin County is offering a \$5 discount on all traffic tickets. There is no obvious reason to pay the full amount, since it’s clear that they will accept lower amounts. The moral argument here is simple; they have committed to accepting the rewards of this system, so I guess they’ve signed up for it.
This information is not particularly well documented, and may be subject to change without notice.
Anyway, if you have Hennepin County traffic tickets, you might give it a try.