If you actually wanted to make the roads safer, you'd build physical "traffic calming" obstacles like speed bumps or chicanes [1]. Switzerland is full of these,

If you actually wanted to make the roads safer, you'd build physical "traffic calming" obstacles like speed bumps or chicanes [1]. Switzerland is full of these, and they're very effective. [1] https://en.wikipedia.org/wiki/Chicane#Traffic_calming https://en.wikipedia.org/wiki/Chicane#Traffic_calming