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Speed limit signs

Discussion in 'Prime Main Forum (2017-2022)' started by Toptimus, Feb 8, 2017.

  1. Toptimus

    Toptimus New Member

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    Does anybody know what the speed limit signs in the HUD are based on? I mean, is it based on static map data (which will sooner or later be outdated), or is it actually using the car's camera to detect and recognize signs?
     
  2. mr88cet

    mr88cet Senior Member

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    I don't know the answer, but my understanding is that Tesla's similar function actually reads them from the camera. It wouldn't surprise me if both companies purchase/license speed-limit-sign reading software from a common vendor.
     
  3. priuscatprimeguy

    priuscatprimeguy Senior Member

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    I don't think it's using the car's camera because sometimes when I'm on a 35 MPH speed limit street the HUD will say 25 MPH
     
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  4. Lee Jay

    Lee Jay Senior Member

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    Map data.
     
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  5. Optimus PRIME

    Optimus PRIME Active Member

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    Static Map Data. Someone posted on my YouTube channel that it is displaying outdated info for his residence.
     
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    On our aftermarket Garmin Navigator the maps have speedlimit data, for most roads. And it can get out of date. There's some occasional anomalies too.
     
  7. 'LectroFuel

    'LectroFuel Senior Member

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    It never works correctly
     
  8. priuscatprimeguy

    priuscatprimeguy Senior Member

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  9. ukr2

    ukr2 Senior Member

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    The Speed Limit is listed under the Heads Up Display. Must be in Advanced Prime only.
     
  10. priuscatprimeguy

    priuscatprimeguy Senior Member

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    I have the Advanced model but it shows up both on the HUD and the MID if I remember right the MID should be displayed along with the compass
     
    #11 priuscatprimeguy, Feb 9, 2017
    Last edited: Feb 10, 2017
  11. 'LectroFuel

    'LectroFuel Senior Member

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    I don't usually use the nav, but the sign shows up in the HUD and the MID.
     
  12. priuscatprimeguy

    priuscatprimeguy Senior Member

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    I understand but Ukr2 was saying it shows up in the Advanced only and Ukr2 has a Premium
     
  13. Optimus PRIME

    Optimus PRIME Active Member

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    if you have the HUD enabled, the Speed Limit info as well as other Navigation info would show up on the HUD and not on the MID. If you disable HUD display, the Navigation info would show up on the MID.
     
  14. ukr2

    ukr2 Senior Member

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    OK, I found the Speed Limit on my Premium Prime.
    I've been keeping the Hybrid System Indicator in the MID.
    If you press the Right arrow on the right-side of the steering wheel, it displays the Compass AND the Speed Limit if the road has one.
    Strange place to have it.
     
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  15. priuscatprimeguy

    priuscatprimeguy Senior Member

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    I didn't find your assumption to be true because the Speed limit info shows up on both the HUD and the MID simultaneously.:D
     
  16. bwilson4web

    bwilson4web BMW i3 and Model 3

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    The speed limit sign looks like the optically based reader in our BMW i3-REx. Also, it appears to change at the same time as passing the sign. So let me propose a test.

    Put a piece of 'blue masking tape' over the optical reader and see if the speed limit signs still change.

    Bob Wilson
     
  17. priuscatprimeguy

    priuscatprimeguy Senior Member

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    Ok, you first:p
     
  18. jdenenberg

    jdenenberg EE Professor

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    Bob,

    I think that the displayed speed limit is driven by the GPS database, not optical recognition at least in my 2016 Prius.

    JeffD
     
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  19. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Does your 2016 have TSS-P?

    Bob Wilson