TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC
  1. TMC is currently READ ONLY.
    Click here for more info.

Speed limit not being recognized

Discussion in 'Model 3: Driving Dynamics' started by cidion, Sep 11, 2018.

  1. cidion

    cidion Member

    Joined:
    Aug 30, 2018
    Messages:
    9
    Location:
    East Tennessee
    Hi guys.

    We've had our Model 3 for about 2 weeks. Love it.
    One thing I noticed right away is the recognized speed limit (on the dash) is not correct to reality.

    I thought that the car read signs, as well as some mysterious database.
    Are you guys seeing the same thing? It means I don't use autopilot on a lot of the 2lane streets around my house.
     
  2. thimel

    thimel Member

    Joined:
    Feb 27, 2015
    Messages:
    603
    The model 3 and newer models S and X do not yet read road signs. They use a database (which has some errors) to get the speed limit.
     
  3. cidion

    cidion Member

    Joined:
    Aug 30, 2018
    Messages:
    9
    Location:
    East Tennessee
    Ahh bummer. For some reason I thought I read that in the manual. It would be great if they would at least let you inform them when it's wrong.

    Thanks for the info.
     
  4. KenF

    KenF Member

    Joined:
    Apr 3, 2016
    Messages:
    307
    Location:
    Washington, DC
    I doubt Tesla will add the ability to report errors because the plan is to add sign detection.
     
  5. Knightshade

    Knightshade Well-Known Member

    Joined:
    Jul 31, 2017
    Messages:
    11,085
    Location:
    NC
    You already have the ability to report errors- Hit the voice command button, say bug report- incorrect speed limit.
     
    • Like x 2
    • Informative x 1
  6. S4WRXTTCS

    S4WRXTTCS Well-Known Member

    Joined:
    May 3, 2015
    Messages:
    5,305
    Location:
    Snohomish, WA
    I'm really hoping that this gets resolved in V9.0

    With AP1 I was used to it being capable of reading speed limit signs, but AP2 doesn't do it. So I have to pay more attention to speed limits. Where I live they change speed limits all the time.
     
  7. TT97

    TT97 Active Member

    Joined:
    Aug 6, 2017
    Messages:
    2,168
    Location:
    Los Angeles
    I do a bug report every time I see a wrong speed limit - not one has been fixed.

    I get monthly announcements from the City of L.A. (through Nextdoor) when they change speed limits on streets - they seem to change dozens every month. Tesla need to get a better system to update the speed limits especially since TACC & Autosteer rely on them so heavily.
     
    • Like x 1
  8. TaoJones

    TaoJones Beyond Driven

    Joined:
    Nov 10, 2014
    Messages:
    3,064
    Location:
    The Americas
    Ain’t that the truth, it’s one of the most glaring weaknesses of AP2 relative to AP1 and it has gotten no better since inception almost 3 years ago. For those unaware, AS limits your speed to 5 over up to a certain point and that is a problem at lower speeds when the speed limit is determined incorrectly.

    Going forward, they need to make the AP1 (Mobileye’s) solution primary (camera read and subsequent system reaction) with a non-error-ridden db (AP2 in-house kludge) as secondary. Having both would be nice as part of AP3.
     
  9. Dana1

    Dana1 Supporting Member

    Joined:
    May 20, 2018
    Messages:
    882
    Location:
    Houston
    Override it with your right scroll wheel until bug report is executed.
     
  10. Az_Rael

    Az_Rael Supporting Member

    Joined:
    Jan 26, 2016
    Messages:
    5,602
    Location:
    Palmdale, CA
    If you are on a road AP thinks is not a highway, +5 is the max you can override with Autosteer on. I have a highway with 65mph limits that AP thinks is 45 and not a highway. I can't override the hard 50mph limit with the scroll wheel. I have to use TACC only, which is unfortunate as it is a large portion of my commute.

    I have been bug reporting it each software update to no avail so far.
     
  11. Dana1

    Dana1 Supporting Member

    Joined:
    May 20, 2018
    Messages:
    882
    Location:
    Houston
    We have a new freeway flyover that is above the old frontage road. The frontage road speed limit is 30mph. Lucy doesn’t realize she’s on the flyover and, left to her own devices, will slow to 30 mph from 65 mph. The nav screen shows 30 as the speed limit. I use the scroll wheel to quickly increase the max speed up to 65 mph and she takes off.
     
  12. MikeATL

    MikeATL Member

    Joined:
    Aug 7, 2018
    Messages:
    368
    Location:
    Atlanta, Georgia, United States
    I would assume Tesla buys all this data from one or more 3rd party’s. Be great if our map feedback could get back to them for review.
     
  13. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    19,181
    Location:
    San Mateo, CA
    Interesting; that has not been my experience. I thought I could override what the car thinks is the speed limit well over +5mph even on non-highways. I will try to confirm that and report back.
     
  14. Az_Rael

    Az_Rael Supporting Member

    Joined:
    Jan 26, 2016
    Messages:
    5,602
    Location:
    Palmdale, CA
    My experience is you can with TACC, but not Autosteer.
     
  15. bathbunny

    bathbunny Member

    Joined:
    Aug 31, 2017
    Messages:
    16
    Location:
    Kohala coast
    Actually, if AP cannot get a speed limit confirmed with the Tesla mothership, it does not show any speed limit and EAP then limits speed to 45mph. You can go faster than 45mph and still have oversteer, but you must accelerate the car beyond the 45mph it will otherwise maintain -- and having to control the accelerator when not controlling the steering makes no sense.
    My Model 3 has never once registered a single speed limit, anywhere, at any time, in the 5.5mos I have had it -- Tesla tells me it has particularly bad maps for the island of Hawaii, where I live.
    So, the sooner Tesla adds optical speed limit (and, more generally, regulatory road signage) recognition to its firmware, the better! But perhaps it will have to wait for AP3.0, in mid-2019...
     
  16. MikeATL

    MikeATL Member

    Joined:
    Aug 7, 2018
    Messages:
    368
    Location:
    Atlanta, Georgia, United States
    I recently did an East-West trip across Florida on all rural highways ... not only were the Tesla speed limits almost always 10 mph wrong (due to recent road improvements and speed limit changes) it was also doing that thing where it limits your off-set to 5 pm over the limit... so where I might be wanting to do 68, it would only auto steer to 55. very frustrating!
     
  17. Deslah

    Deslah Member

    Joined:
    Jan 31, 2019
    Messages:
    67
    Location:
    Germany
    Is anyone seeing better results with reporting of incorrect speed limits?
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC