Those risk factors have been considered by people who are qualified to design road systems. You can't just heap additional risk on without consequences.

If I choose to drive wearing a blindfold that wouldn't necessarily mean there's any damage but it should definitely be a crime.

>Those risk factors have been considered by people who are qualified to design road systems.

Yes and no.

Those people usually have no role in applying the speed limits.

The max speed limits for a given type of road are given by some non-technical norms, i.e. - as an example - the Law may say that for a highway the max legal limit is 130 km/h, for a state route 90 km/h, etc.

People designing the road need to conform to those Law requirements, and - as a matter of fact - those requirements are normally exceeded (i.e. roads are usually designed in such a way that they could have from a purely technical standpoint higher speed limits).

The issue is particularly relevant where in single stretches of road there is something (a series of curves, a depression, etc.) that imposes (technically) a lower than Law mandated maximum speed for the type of road.

In these cases, if (technically) the max speed is - say - 120 Km/h (instead of 130 km/h) other factors (outside the powers or influence of the designer) will result in a much lower speed limit posted, let's say 90 Km/h.

This is done - usually - in good faith and to enhance security, but often - later - that specific stretch of road becomes a good way to make cash, as noone will suddenly reduce speed from the (allowed and legal till then) 130 km/h to 90 km/h and will go through the curves at 100-120 km/h (still within the technical limits, i.e. "safe enough" but far above the posted limit) thus being subject to fines.