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Detecting stationary objects is a known issue with every driver assist system. No automaker's system guarantees that it will stop for stationary objects. In fac

Detecting stationary objects is a known issue with every driver assist system. No automaker's system guarantees that it will stop for stationary objects. In fact they all explicitly state that they may not. It's a known and disclosed and accepted risk of these systems. Ford: "may not detect stationary or slow moving vehicles" https://www.fordservicecontent.com/Ford_Content/Catalog/owner_information/2021-Ford-Mustang-Mach-E-Owners-Manual-version-1_om_EN-US_09_2020-1.pdf https://www.fordservicecontent.com/Ford_Content/Catalog/owne... Tesla: "may not recognize or detect oncoming vehicles, stationary objects, and special-use lanes such as those used exclusively for bikes, carpools, emergency vehicles, etc" https://www.tesla.com/ownersmanual/model3/en_us/GUID-0535381F-643F-4C60-85AB-1783E723B9B6.html https://www.tesla.com/ownersmanual/model3/en_us/GUID-0535381... GM: "may not detect and react to stopped or slow-moving vehicles ahead of you" https://my.chevrolet.com/content/dam/gmownercenter/gmna/dynamic/manuals/2022/chevrolet/bolt-ev/2022-chevrolet-bolt-ev-owners-manual.pdf https://my.chevrolet.com/content/dam/gmownercenter/gmna/dyna... etc. You can find it in every brand's manual. NTSB and NHTSA knew that this risk existed when they approved these systems. There is nothing to investigate.

raylad 5y ago
Yes, but there is usually an additional system like Toyota's Safety Stop which WILL detect a stationary object and kick in at the last minute to reduce speed by N MPH before collision. AFAIK Tesla used to have that via its RADAR but because the new production has no RADAR, new cars can't have it, and they disabled it on the older cars too, in the interest of using a single software version. At least this is what I've gathered from reading here and elsewhere.
- modeless 5y ago
  Radar is useless for detecting stationary objects because of far too many false positives. Radar is the reason why these warnings exist. It is not the solution. Teslas continue to have forward collision warning and automatic emergency braking as standard features whether or not they have radar. But again, they do not detect 100% of all stationary objects and neither does any other automaker's system.
  - raylad 5y ago
    These systems do work and have worked for years. They are also regularly tested by IIHS. See, for example: https://www.youtube.com/watch?v=TJgUiZgX5rE https://www.youtube.com/watch?v=TJgUiZgX5rE And Teslas at least used to do this too: https://www.youtube.com/watch?v=aJJfn2tO5fo https://www.youtube.com/watch?v=aJJfn2tO5fo If they no longer stop reliably to avoid hitting stationary objects, this is a serious problem that needs to be corrected.
    - modeless 5y ago
      They absolutely work but they are not reliable. Not on any car. They are a safety system of last resort.
conductr 5y ago
> It's a known and disclosed and accepted risk of these systems. Accepted by who? As another driver getting rear-ended by these vehicles, I didn't agree to that. It's just a way for them to shift liability to the driver for what they know is going to happen. This technology shouldn't be allowed on the road unless it could detect and avoid impact with parked cars. This should be price of admission for the technology.
- modeless 5y ago
  Accepted by NTSB and NHTSA.

raylad 5y ago

Yes, but there is usually an additional system like Toyota's Safety Stop which WILL detect a stationary object and kick in at the last minute to reduce speed by N MPH before collision. AFAIK Tesla used to have that via its RADAR but because the new production has no RADAR, new cars can't have it, and they disabled it on the older cars too, in the interest of using a single software version. At least this is what I've gathered from reading here and elsewhere.

modeless 5y ago
Radar is useless for detecting stationary objects because of far too many false positives. Radar is the reason why these warnings exist. It is not the solution. Teslas continue to have forward collision warning and automatic emergency braking as standard features whether or not they have radar. But again, they do not detect 100% of all stationary objects and neither does any other automaker's system.
- raylad 5y ago
  These systems do work and have worked for years. They are also regularly tested by IIHS. See, for example: https://www.youtube.com/watch?v=TJgUiZgX5rE https://www.youtube.com/watch?v=TJgUiZgX5rE And Teslas at least used to do this too: https://www.youtube.com/watch?v=aJJfn2tO5fo https://www.youtube.com/watch?v=aJJfn2tO5fo If they no longer stop reliably to avoid hitting stationary objects, this is a serious problem that needs to be corrected.
  - modeless 5y ago
    They absolutely work but they are not reliable. Not on any car. They are a safety system of last resort.

conductr 5y ago

> It's a known and disclosed and accepted risk of these systems. Accepted by who? As another driver getting rear-ended by these vehicles, I didn't agree to that. It's just a way for them to shift liability to the driver for what they know is going to happen. This technology shouldn't be allowed on the road unless it could detect and avoid impact with parked cars. This should be price of admission for the technology.

modeless 5y ago
Accepted by NTSB and NHTSA.