AP allowing 10MPH over limit (Red Light Stop).

[JulienW]

Noticed that on a certain short stretch of road and only going in one direction that AP allows me to go 10MPH (or more) over the speed limit. Also using Red Light/Stop Sign stopping and can only go the speed limit everywhere else. Thought it was a one time fluke but have now repeated it. Have others seen this happen? Sorry for the crappy pic but watching road and got a lot of thumb in the pic. It was actually showing the "Stoping at Red Light" message below my thumb and I had to crop. And you can see the Red Light to the left.

 

[DrtyJrze]

Noticed that on a certain short stretch of road and only going in one direction that AP allows me to go 10MPH (or more) over the speed limit. Also using Red Light/Stop Sign stopping and can only go the speed limit everywhere else. Thought it was a one time fluke but have now repeated it. Have others seen this happen? Sorry for the crappy pic but watching road and got a lot of thumb in the pic. It was actually showing the "Stoping at Red Light" message below my thumb and I had to crop. And you can see the Red Light to the left.

View attachment 557227

Lol, this is hilarious.

Yes, it happens. But there will be people here who tell you it doesn’t, even though you have a pic, because they know everything...

Thanks for posting.

 

[Knightshade]

We already know it allows higher speeds on certain road types- presumably that bit of road is classified wrong.... fair bit of that in the database (much like there's lots of incorrect speed limits there too)

 

[brkaus]

It allows it on divided highways. Possibly others or those that are mid-tagged.

 

[JulienW]

This is an in city street and it only happens for a short stretch and in only one direction (south).

Here is about where I was.

 

[lolder]

If the car thinks it's on a three lane street it will allow more than 5 mph over.

 

[BuggDDS]

Maybe it thinks you’re on a divided double lane highway and your max is 90?

 

[brkaus]

I haven’t figured out all the scenarios. There is a road near me that has no limit for about a 1/4 mile. I think it’s simply tagged wrong.

going from a road with a large median & stoplights to a 2 lane each way with a center turn.

all magic I guess.

 

[lolder]

Some road speed limits are not in the data base and 45 mph is the default. Look at the display and if it shows two gray lane lines in addition to the two blue ones the car thinks it's on a three lane road and will allow more than 5 mph over the limit. That's all dependent on the cameras, not the data base.

 

[JulienW]

...Look at the display and if it shows two gray lane lines in addition to the two blue ones the car thinks it's on a three lane road and will allow more than 5 mph over the limit....

It dons't show 2 gray lines or "think" there are 3 lanes. The car "knows" there is only 2 lanes and has used both lanes many times and it does't "see" a lane that is not there.

 

[lolder]

Then I have no clue. It's a computer first and a car second.

 

[jeremymc7]

Could also be a difference between seen signed and mapped data? I notice the signs shown on the screen are often vastly different over the physical ones on the street.

For example it shows 35 but the actual signs are 45. Perhaps the mapped data is 45 and system is allowing the higher of the two due to conflict.

No idea.

 

[JulienW]

Could also be a difference between seen signed and mapped data?....

The reason is Tesla can't/doesn't read speed limit signs yet. Mobileye has a patent and Tesla is still looking for a workaround and hopefully it will be soon.

EDIT: Also it has the speed limit showing as correct at 35MPH in my first pic.

 

[jeremymc7]

The reason is Tesla can't/doesn't read speed limit signs yet. Mobileye has a patent and Tesla is still looking for a workaround and hopefully it will be soon.

So the early AP1 cars do read signs then while later ones don't then?

Just buy out Mobileye. Apple would. I'm sure Tesla has the resources.

 

[JulienW]

So the early AP1 cars do read signs then while later ones don't then?

Yes

Does your AP1 read speed signs?

 

[Knightshade]

So the early AP1 cars do read signs then while later ones don't then?

Just buy out Mobileye. Apple would. I'm sure Tesla has the resources.

Mobileye is owned by Intel.

So no, they don't have the resources.

 

[chillaban]

So the early AP1 cars do read signs then while later ones don't then?

Just buy out Mobileye. Apple would. I'm sure Tesla has the resources.

Intel spent a whopping 15.3 billion dollars to buy out MobilEye. That’s not exactly a great value for Tesla compared to in house Autopilot.