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Nothing and it happens all the time. This is something that a human driver familiar with the road will notice and it will be unlikely to cause an accident. An o

Nothing and it happens all the time. This is something that a human driver familiar with the road will notice and it will be unlikely to cause an accident. An out-of-towner might get into an accident. An automated vehicle would ideally not even be looking at signs and just operating from its stored data.

cbhl 7y ago
The obvious counterpoint to "operating from stored data" is an accident or construction causing a lane to be closed, or a child chasing a ball across the road.
- j-c-hewitt 7y ago
  In the hypothetical world in which self driving cars are the norm and not the exception detours would be in the system so that SDCs would not need to read signs. Even now a lot of traffic maps get updated to show detours, delays, and temporary closures due to accidents. FWIW I am a near-term self-driving car skeptic and have been for a long time. I just think that these are not the kind of issues that really pose a major obstacle whereas drunk people wandering across the street are.
  - tripzilch 7y ago
    We will nano-tag alcohol and keep a database of all wandering drunks, for self-driving cars to either avoid them or take them home!
gambiting 7y ago
That's an absolutely crazy idea. You are only required by law to follow signs that are actually there, full stop, a car should never rely on some built in database of data. I cannot imagine a database of signs that would be constantly up to date and somehow distributed to all cars on the road.
- j-c-hewitt 7y ago
  I don't think that's crazy. Why shouldn't local authorities, state DOTs, and the national DOT be obligated to also update a database that self driving cars use? They already have such databases for their own records, usage, and analysis. In a world in which SDCs are normal that is how you would expect it to work. It's a bigger expectation to suppose that the car will perceive the environment better than a person would and make correct on-the-fly decisions about traffic signs when snow obscures the sign and a little bit of ice and muck obscures its cameras ever-so-slightly, making some of the sensors go half-berserk.
  - gambiting 7y ago
    >>It's a bigger expectation to suppose that the car will perceive the environment better than a person would and make correct on-the-fly decisions about traffic signs when snow obscures the sign and a little bit of ice and muck obscures its cameras ever-so-slightly, making some of the sensors go half-berserk. Then it should do the same a person is required to do in that scenario - slow down and exhibit caution. Otherwise you will get a car that confidently drives forward because it "knows" a sign is there. If the sensors can't cope with that then the car shouldn't be on the road at all, period. >>Why shouldn't local authorities, state DOTs, and the national DOT be obligated to also update a database that self driving cars use? Because the same local authorities don't even have the budget, time or competency to fix the most minor issues with our roads. Potholes go unfixed for weeks, there's no budget for cleaning, for salting, for repair of missing signs, lamp posts or simply for review whether existing signage is actually appropriate after changes they make. But yet the same authorities should be tasked with real time updates to some database of signage? I'm sorry, but I'm just trying to be realistic here - we can write legislation to require authorities to do something, but in real world that's just not going to happen reliably enough to trust it. I know I wouldn't.
- tripzilch 7y ago
  > I cannot imagine a database of signs that would be constantly up to date and somehow distributed to all cars on the road. Really depends on where you are. I agree I can't imagine it in the USA, but in the Netherlands, where every square metre is documented, attributed and zoned (yes including the leftover grassy triangle bits between highway ramps, everything). We could totally do that if necessary. I don't know if documenting all the traffic signs would be the right solution. If anything I would imagine this database to include way more virtual traffic signs than are actually there. Not for the legal traffic rules, but virtual ones that would be nice if they existed and everybody in the flock held to them. Point is that worldwide there is a huge variety in the quality of roads, the quality of signage, driving culture and attitude, and the general predictability of the environment. Some places will lend themselves more naturally to the first forms self-driving cars will take than other places that are more "free form".

cbhl 7y ago

The obvious counterpoint to "operating from stored data" is an accident or construction causing a lane to be closed, or a child chasing a ball across the road.

j-c-hewitt 7y ago
In the hypothetical world in which self driving cars are the norm and not the exception detours would be in the system so that SDCs would not need to read signs. Even now a lot of traffic maps get updated to show detours, delays, and temporary closures due to accidents. FWIW I am a near-term self-driving car skeptic and have been for a long time. I just think that these are not the kind of issues that really pose a major obstacle whereas drunk people wandering across the street are.
- tripzilch 7y ago
  We will nano-tag alcohol and keep a database of all wandering drunks, for self-driving cars to either avoid them or take them home!

gambiting 7y ago

That's an absolutely crazy idea. You are only required by law to follow signs that are actually there, full stop, a car should never rely on some built in database of data. I cannot imagine a database of signs that would be constantly up to date and somehow distributed to all cars on the road.

j-c-hewitt 7y ago
I don't think that's crazy. Why shouldn't local authorities, state DOTs, and the national DOT be obligated to also update a database that self driving cars use? They already have such databases for their own records, usage, and analysis. In a world in which SDCs are normal that is how you would expect it to work. It's a bigger expectation to suppose that the car will perceive the environment better than a person would and make correct on-the-fly decisions about traffic signs when snow obscures the sign and a little bit of ice and muck obscures its cameras ever-so-slightly, making some of the sensors go half-berserk.
- gambiting 7y ago
  >>It's a bigger expectation to suppose that the car will perceive the environment better than a person would and make correct on-the-fly decisions about traffic signs when snow obscures the sign and a little bit of ice and muck obscures its cameras ever-so-slightly, making some of the sensors go half-berserk. Then it should do the same a person is required to do in that scenario - slow down and exhibit caution. Otherwise you will get a car that confidently drives forward because it "knows" a sign is there. If the sensors can't cope with that then the car shouldn't be on the road at all, period. >>Why shouldn't local authorities, state DOTs, and the national DOT be obligated to also update a database that self driving cars use? Because the same local authorities don't even have the budget, time or competency to fix the most minor issues with our roads. Potholes go unfixed for weeks, there's no budget for cleaning, for salting, for repair of missing signs, lamp posts or simply for review whether existing signage is actually appropriate after changes they make. But yet the same authorities should be tasked with real time updates to some database of signage? I'm sorry, but I'm just trying to be realistic here - we can write legislation to require authorities to do something, but in real world that's just not going to happen reliably enough to trust it. I know I wouldn't.
tripzilch 7y ago
> I cannot imagine a database of signs that would be constantly up to date and somehow distributed to all cars on the road. Really depends on where you are. I agree I can't imagine it in the USA, but in the Netherlands, where every square metre is documented, attributed and zoned (yes including the leftover grassy triangle bits between highway ramps, everything). We could totally do that if necessary. I don't know if documenting all the traffic signs would be the right solution. If anything I would imagine this database to include way more virtual traffic signs than are actually there. Not for the legal traffic rules, but virtual ones that would be nice if they existed and everybody in the flock held to them. Point is that worldwide there is a huge variety in the quality of roads, the quality of signage, driving culture and attitude, and the general predictability of the environment. Some places will lend themselves more naturally to the first forms self-driving cars will take than other places that are more "free form".