How, exactly would the car be expected to know the speed limit? What if the expected value is wrong? What if the database of speed limits is unavailable? What happens when a speed limit for a road changes? What about new roads? What happens when the car leaves California?
What if California moves? (Earthquakes and Landslides are common there) How is the car supposed to cope with moving roads and landmarks?
Is there some provision for over-riding the speed limiter in the event of emergency?
What if Loran-C* is no longer available? Or GPS, or GLONASS. What if the Russians, Canadians, Nevadans or others Jam the signal?
This bill strikes me as about as useful as the time my home state of Indiana tried to legislate the value of Pi.[1]
Edit: *Yes, I know there are no longer any reliable long range ground-based navigation systems, which is a huge problem. While LORAN-C has been discontinued, it has never been properly replaced.
Edit2: What about private property? If a parking lot has a posted speed limit, how does that information get into the database? Should it get into the database?
There are far, far too many corner cases to seriously consider using a technical solution to what is obviously a social problem.
The driver is always responsible until full self-driving systems are on the market. A system like this is helping you comply with the law, but it doesn't change the fact that following the law was always your responsibility.
It mainly relies on the OCR reading speed signs which most new cars have had for a while now, although as anyone who has it will know, it's not that always that great.
I have just this in my car and on one road where I live regularly that has a 60km/h limit my speed limit warning would always read 5km/h past a certain point and it took me a while to realise it was actually picking up a speed sign for 5km/h in a small car park off some way to the side.
It also has trouble with mixed speed limits that I have in my area where both speeds are on the same sign, for example some roads are 80km/h in normal conditions but 60km/h when wet or 70km/h for cars but 40km/h for trucks and buses, usually it defaults to the lower limit.
Luckily my car is a bit older so it just flashes red when you go over what it thinks is the speed limit, but more modern cars that will bong or even restrict speed would be infuriating.
It mainly relies on the OCR reading speed signs which most new cars have had for a while now
Have they? That must be an EU thing, or very recent, because it's mostly only luxury cars here in the US as best I can tell. Certainly wasn't even an option on our 2017 BMW or 2021 Honda.
What if California moves? (Earthquakes and Landslides are common there) How is the car supposed to cope with moving roads and landmarks?
Is there some provision for over-riding the speed limiter in the event of emergency?
What if Loran-C* is no longer available? Or GPS, or GLONASS. What if the Russians, Canadians, Nevadans or others Jam the signal?
This bill strikes me as about as useful as the time my home state of Indiana tried to legislate the value of Pi.[1]
Edit: *Yes, I know there are no longer any reliable long range ground-based navigation systems, which is a huge problem. While LORAN-C has been discontinued, it has never been properly replaced.
Edit2: What about private property? If a parking lot has a posted speed limit, how does that information get into the database? Should it get into the database?
There are far, far too many corner cases to seriously consider using a technical solution to what is obviously a social problem.