I like the concept, especially if as discussed by others in the thread it were to be combined with the progressive fine system used in some countries.

The thing is, before any discussion of stricter enforcement of speed laws, we need to fix the speed limits to match the roads (or vice versa, as may be desirable in some scenarios).

Anywhere that has a "speeding problem" doesn't actually have a problem with people violating the law, it has a problem with the law being wrong. Most major traffic engineering guidebooks suggest that limits be set based on the 85th percentile speed or something similar to that.

In free-flowing traffic conditions and without strict speed enforcement, every combination of road, driver, and vehicle has a natural speed they'll settle in to. The general principle is that the speed limit should be high enough that the vast majority of drivers are not speeding, If the 85th percentile natural speed of a road is higher than desired for whatever reason, the correct answer is to redesign the road to reduce its natural speed, not to strictly enforce an artificially low limit.

Unfortunately at least in the US while these principles are in our traffic engineering guidelines they are overridden by statutory limits. Certain classes of road are never allowed to have a speed limit above a certain level. When combined with the fact that we tend to build roads to be as wide, flat, and straight as we can get away with, the natural speeds on a huge number of roads exceed the statutory limits.

I've driven a significant portion of the American Interstate system as well as a small part of Canada's highway network. I still have yet to see a single controlled-access highway where the majority of free flowing traffic wasn't traveling above the posted speed limit. Seriously, get on the highway anywhere in the US outside of rush hour, get in the right lane, and set your cruise control to the posted limit. Roughly everyone will pass you. There are a few outliers, but on the average free-flowing highway I'd be willing to bet the 85th percentile rule actually applies backwards, over 85% of traffic is ignoring the limit because it's stupidly low.

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Eliminate all statutory limits, require all limits be set by the 85th percentile rule, and maybe learn from the Germans' demonstration that flat, straight, highly visible stretches of high quality highway don't really need limits at all. Then and only then should we talk about stricter enforcement.

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What we really need is stricter driver training and stricter enforcement against those who are actually bad at driving. We basically hand out licenses in a Cracker Jack box and have no meaningful classifications for personal use. The license I got on my 16th birthday by driving a compact sedan through a half-ass not even parallel parking thing and then going around the block in a small town also allows me to pilot a literal semi truck pulling a 53' trailer around most of North America as long as it's not for commercial purposes. In most states those retirees driving massive RVs have no additional training or testing.

Unfortunately given that outside of a few major cities it's pretty much impossible to live a fully functional life without being able to drive or be driven it's really hard to change that. Taking away someone's ability to drive is literally taking away their freedom in a large part of the US.