Did you know that there are other countries and legal systems?

First, the law in the OP is an American law.

Second, I find it difficult to believe that there are countries where driving slightly faster than a number printed on a road sign can result in prison time.

If I've made an error, it's because I drew a reasonable, albeit incorrect, conclusion; it isn't because I'm an ignorant American who doesn't consider the existence of other countries. If you had a correction, you should have posted it rather than a snide comment along these lines.

Some countries take an extreme stance on driving-related offenses. A few countries are actually so worried about speeding that they have banned the sale of racing-related video-games.

Hell, in Virginia a few years back they implemented insanely high fines for all sorts of minor moving violations. Some of the offenses cost several thousand dollars.

Sufficiently over the speed limit can be reckless endangerment, which is a misdemeanor.

I responded to a post about the common tendency to speed when deemed prudent.