Well devices that check your eye movement and howl when you are falling asleep do exist... at least as a working concept.
I don't like the idea of bans and restrictions. On one hand it would be good if nobody died in traffic, but you have to draw the line somewhere. If we made rollcages, safetyharnesses, helmets and fire retardant clothing mandatory, along with limiting the top speed of cars, dramatically improving handling and not trying to fix crappy handling with electronics like today, building rails between every two lanes, only building elevated junctions, build fences so deer and moose dont wander on the roads, fix the damn potholes and grooves, offer extensive and continuous traning to drivers and raising the minumum legal age to 25, with zero tolerance for any kind of medicine or drug including caffeine, there would probably still be deaths.
Im not saying let them die, i dont like innocent people getting killed in traffic or otherwise, but i can't figure out how safe is safe enough.
I can't remember which, but some board in Finland anyway, just said that the "zero casualties" thing which is the governments goal here, is quite simply impossible with the current state of the roads. The roads are not crap, but there are problems in how the roads deteriorate, lowering speed limits has not worked at all. The ones who drive at warpspeed dont care if the limit is 80 or 100kph, anyway.
Funding for road maintenane goes down all the time, and has been for a very long time, even though both private and commercial traffic is increasing. And the taxing on buying a car is so damn huge here, that the average car is 12 years old i think, cars older than ten years are not particularly safe by todays standards. They are shockingly bad, quite honestly. A good eample was an article explaining a crash where two VW Golfs crashed head on, one Mk3 and one Mk4, both driving at the same speed in opposite directions, two people in the Mk3 died, the people in the Mk4 only got some bruises and thats it for physical damage. All were wearing seatbelts IIRC.
That crash was investigated by an "accident board", they study the causes and effects of every lethal crash in Finland. The drivers background, eyewitnesses, technical data, weather, time of day, everything. And write a long report about it, with clear data on why it happened, how it happened, what it lead to, and what could have avoided it. The most common causes by far is alcohol and excessive speed, after that is probably passive safety of the cars. The most common thing that would have saved lives is a seatbelt, which is often not used by those who drive drunk. They even mention if someone was saved because of not wearing a seatblet, thats very rare though. Has the board lead to an improvement in safety? I have no idea, but this has been done for ages now. Since the sixties or seventies IIRC.
What is my point? i forgot.