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Autopilot not detecting speed change
- Thread starter Yaely
- Start date
Enginerd
Member
I think it will adjust speed in certain situations (e.g. slowing to a safe speed for a turn or a freeway exit). But in general I think it does not. The easy shortcut I picked up on these forums is, after the speed limit changes, a long press on the AP engage lever adjusts to the current speed limit.
Wow. I am surprised. I thought it would be a basic function .
When I search TMC for "does autopilot read speed limit signs"
I get the following threads that might help:
Limitations Of Speed Limit Sign Recognition
Took a brief spin after installing 2020.36.3.1 today, and was both pleased and disappointed. As hoped, the car now reads speed limit signs and sets that speed for Autopilot. As feared, the car does not read the “End of speed limit” signs commonly used in Vermont, where I live. Vermont has...
teslamotorsclub.com
Reading Speed Limit Signs – Autopilot Crippled
I’ve been waiting for someone to post about this, but I guess it’s up to me. Since the last update, my Model S has begun reading speed limit signs using its cameras rather than relying only on Google map data. Google’s speed limit data is usually but not always correct, so I’ve been wanting...
teslamotorsclub.com
Speed limit detection problems
Hi all, I've driven about 2500km now, most of it with autopilot engaged and encountered several issues chiefly to do with speed limit detection. It appears that my brand new 2020 Model S Performance simply does not read speed limits from camera input. I've driven through a dozen roadworks zones...
teslamotorsclub.com
Tesla Model 3 and speed limit signs
I am looking at purchasing a M3LR. I currently have a Ford Focus (2016) which actually picks up speed limit signs very well generally. I have read reports that the Model 3 in the UK is fairly poor at reading and adjusting to speed limit signs. Equally others say it is pretty good. I also know...
teslamotorsclub.com
There are a few more as well, if you would like to read what peoples experience here on TMC has been with this feature.
As far as I know it holds the speed, you can use the right side wheel control to increase/decrease speed manually, but it will only slow down automatically if cars are in front of you going slower.
I believe there is a setting to change this to follow speed limit now but I have not tried it. Check the manual for details.
it is good to know that cruise control is configurable because I find it very annoying, if not downright dangerous at present when I select a safe speed for the conditions and engage cruise, to have it accelerate to what it thinks is the speed limit which is sometimes wrong.
Autopilot is very dangerous on single lane country roads as it regularly tries to take over when I move over to pass an oncoming vehicle, complete with hazard alarm. I have been driving on such roads for 45 years without incident and this piece of *sugar* thinks it knows better than I???
The auto panic braking is also a health hazard as it balks at centre barriers when changing lanes.
Unless these ‘features’ can be turned off Tesla can have this model 3 back for a full refund!
Autopilot is very dangerous on single lane country roads as it regularly tries to take over when I move over to pass an oncoming vehicle, complete with hazard alarm. I have been driving on such roads for 45 years without incident and this piece of *sugar* thinks it knows better than I???
The auto panic braking is also a health hazard as it balks at centre barriers when changing lanes.
Unless these ‘features’ can be turned off Tesla can have this model 3 back for a full refund!
Enginerd
Member
Appreciate the links. There are 2 things here.When I search TMC for "does autopilot read speed limit signs"
I get the following threads that might help:
Limitations Of Speed Limit Sign Recognition
Took a brief spin after installing 2020.36.3.1 today, and was both pleased and disappointed. As hoped, the car now reads speed limit signs and sets that speed for Autopilot. As feared, the car does not read the “End of speed limit” signs commonly used in Vermont, where I live. Vermont has...Reading Speed Limit Signs – Autopilot Crippled
I’ve been waiting for someone to post about this, but I guess it’s up to me. Since the last update, my Model S has begun reading speed limit signs using its cameras rather than relying only on Google map data. Google’s speed limit data is usually but not always correct, so I’ve been wanting...Speed limit detection problems
Hi all, I've driven about 2500km now, most of it with autopilot engaged and encountered several issues chiefly to do with speed limit detection. It appears that my brand new 2020 Model S Performance simply does not read speed limits from camera input. I've driven through a dozen roadworks zones...Tesla Model 3 and speed limit signs
I am looking at purchasing a M3LR. I currently have a Ford Focus (2016) which actually picks up speed limit signs very well generally. I have read reports that the Model 3 in the UK is fairly poor at reading and adjusting to speed limit signs. Equally others say it is pretty good. I also know...
There are a few more as well, if you would like to read what peoples experience here on TMC has been with this feature.
- Does the car recognize speed limit signs? Yes, and I think it does a good job of this where signage is good. Your links address this aspect.
- Does AP adjust the set speed according to posted speed limits? I believe this is really the thrust of the OP's question, and I think the answer is basically "no".
jabloomf1230
Minister of Silly Walks
I think that autosteer is limited to 5 mph over the posted speed limit so that may be adding to the confusion. For example, if you have autosteer active and the posted limit changes from 55 to 45, the car will slow to 50.
If it's a highway, it will not change the speed from what you set it.
I have the same problem too. It is a pretty serious flaw if cruise control and autopilot have you unintentionally speeding. My model 3 FSD goes the speed set in the max speed icon and does not change with changes in the recognized speed limit. ( It also cant recognize school speed zones, which should be a pretty easy fix. States won't approve self driving operation as long as the car is guaranteed to break speed limits.
israndy
Supercharger Hunter
The worst problem is the bug where it enters the TRUCK speed limit after initially showing the actual speed limit on the display. This happens so often that I don't trust the car to show the correct speed limit, if I see it says 55 I assume that means the actual limit is 65 or 70 and then set my speed accordingly... Dangerous, FIX THIS Tesla!
But yeah, this thread should be abandon, know that the set speed of your car is set by you and not by the signs on the highway, and that if you have auto steer enabled than certain roads will have a max of +5 MPH over the posted limit which will cause the car to slow in situations like entering a town and accelerate leaving those towns as the car attempts to reach the speed you have set, but for most freeway driving the set speed is not changed by speed limit changes.
But yeah, this thread should be abandon, know that the set speed of your car is set by you and not by the signs on the highway, and that if you have auto steer enabled than certain roads will have a max of +5 MPH over the posted limit which will cause the car to slow in situations like entering a town and accelerate leaving those towns as the car attempts to reach the speed you have set, but for most freeway driving the set speed is not changed by speed limit changes.
Mobileye owns a patent for reading road signs through auto software in the US which prohibits Tesla from reading signs to adjust the speed. What you see on your display is just for information. Tesla has not figured a legal work-around yet. The speed limit is adjusted exclusively through GPS data and is 90% of the time wrong. I twitted many times asking if they will sort this out but no response from anyone. This is a know issue at Tesla and quite a shameful one as much cheaper cars (like our Peugeot e208) read road signs with killer precision. Do not expect this sorted any day soon. Do not choose speed relative to road speed, use only relative to the driver setting and pay attention to the road.
Another thing connected to this issue is that until they sort this up they will never be able to activate FSD for all cars before 2020. (Before 2016 for different reasons but 2016 to 2020 for AP2 patents)
Noone is speaking about this but it is sadly true. A little google search will give you all the answers.
Here is the patent:
US20080137908A1 - Detecting and recognizing traffic signs - Google Patents
A method for detecting and identifying a traffic sign in a computerized system mounted on a moving vehicle. The system includes a camera mounted on the moving vehicle. The camera captures in real time multiple image frames of the environment in the field of view of the camera and transfers the...
patents.google.com
This issue affects all AP2 Teslas. That means more or less all Teslas between early 2016 and late 2019
Tesla Autopilot AP1 vs AP2 vs AP3 - Differences Explained - AutoPilot Review
Tesla originally released Autopilot in late 2014 and has been pushing the envelope of self-driving capabilities ever since. While new Tesla vehicles do come standard with basic safety features, the true self-driving characteristics come into play with Autopilot, specifically, the Full...
www.autopilotreview.com
The problem is that GPS or road sign data can spook the cruise control commands and i have been in many situations where i was doing 100KPH on the high way with CC activated and it dropped to 40 because it thought i was driving on a side low speed limit road... almost made us have a collision and everyone (including the kids) woke up violently. I hate AP and the fact that you cannot overide any features...
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