There are some highways that have a "minimum speed limit" sign posted. Not often, but they do exist, and you can get a ticket on those highways. Also, a Google

There are some highways that have a "minimum speed limit" sign posted. Not often, but they do exist, and you can get a ticket on those highways. Also, a Google Self-driving car got pulled over the other day for simply going the speed limit, it did not get a ticket but I thought I would mention it.