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Implementation matters. The automatic braking on my compact SUV has falsely triggered hundreds of times over the course of 3 years, usually when transitioning f

by proggy 4y ago

Implementation matters. The automatic braking on my compact SUV has falsely triggered hundreds of times over the course of 3 years, usually when transitioning from a moderately-pitched-down driveway into a roadway. The result of this scenario is the car coming to a dead stop with its front end halfway into a traffic lane, putting me and my passengers at greater risk of a collision from oncoming traffic approaching from the left hand side. It’s happened so often I’ve made a habit of disabling it whenever I exit certain commonly used driveways know to trigger the behavior.

athorax 4y ago
Low hanging branches heading up to our house trigger ours when it is breezy out. Super annoying.
Tade0 4y ago
Toyota has a good one: it gives me a beep and turns the screen red, but I have to start braking by myself, at which point it takes over and adjusts braking force so as to not hit whatever is in front of me. False positives usually happen when there are cars parked along a turn, but I ignore this completely. Over the course of the five years I had this car it prevented a collision twice this way.
- KptMarchewa 4y ago
  > Toyota has a good one: it gives me a beep and turns the screen red, but I have to start braking by myself, at which point it takes over and adjusts braking force so as to not hit whatever is in front of me. This way takes away the biggest advantage of this systems - that they can react before you do.
  - Tade0 4y ago
    Thing is it does react before I do - in those two situations I would have probably continued on my path for too long and brake too late to avoid a collision.
    - KptMarchewa 4y ago
      It does not brake, just waits for your reaction.
- toss1 4y ago
  Wow, I've had the same thing in two different cars (Ford & Mazda), and it is awful. Always false alarms, never in time that I could brake at a time that I wouldn't otherwise, and distracting enough to be a real worry. The only situation I can conceive of it being useful is if the driver is falling asleep on the highway. What were the situations where yours triggered and actually helped?
  - Tade0 4y ago
    First was my first day with glasses - I didn't anticipate that my depth perception would be so different so the sensor beeped when traffic in front of me stopped due to a changing light. Second was the car in front of me hitting the brakes when I was looking in the rearview mirror because both of us wanted to overtake the truck in front of us - that other person in the last moment decided not to do it. Or perhaps they weren't planning on that and just didn't see the truck - I didn't see them indicate.
    - toss1 4y ago
      Interesting thanks - could see how it could have helped in those situations. And in both, you managed to see/hear the warning and brake in time - impressive!
fuzzythinker 4y ago
Name and shame your SUV please. You may save lives doing so.
comfypotato 4y ago
This is my gripe with the safety of self-driving cars generally. The net crashes are much lower (very good thing) but the crashes that do happen take place under different circumstances. A good driver paying close attention will probably be better than the computer for a long time. The crashes being avoided are dumb read end collisions where the crash happened because the driver didn’t realize someone was stopped at the red light in front of them (just one example of an unfortunately common crash). Still looking forward to it when I’m older and a bad driver anyway. Can’t wait to have a personal vehicle that takes me everywhere.
toss1 4y ago
Yup. Our cars don't have auto-braking, but the "Pre-Collision Warning" or "Collision Alert" in the Ford Ranger and Mazda MX5 are both very annoying. They create enough of a distraction that I'm concerned that it could lead me into an accident. Yet it triggers too late to do anything about it, unless I simply train myself to reflexively hard brake whenever it goes off, which would almost surely get me rear-ended, especially since it's always a false alarm. They both mis-trigger fairly reliably if I'm in a bend in the road and there is a car or object on the outside of the bend, so it seems that they don't take into consideration that I've turned the wheel, or the steering angle. I've also had total mystery alerts, seemingly from spots or a shovelfull of dirt on the road surface. OTOH, the distance-keeping cruise control on the Mazda is very good, and I've used it for dozens of miles at a time on country roads, with and without traffic. These emergency auto-braking systems are clearly not ready for prime-time, except maybe for highway use, which is where they can do the most good anyway. I sure as heck don't want my car to auto-brake in any of the situations I've seen the "Collision alert" triggered. Some would have definitely caused accidents.

by proggy 4y ago

athorax 4y ago

Low hanging branches heading up to our house trigger ours when it is breezy out. Super annoying.

Tade0 4y ago

Toyota has a good one: it gives me a beep and turns the screen red, but I have to start braking by myself, at which point it takes over and adjusts braking force so as to not hit whatever is in front of me. False positives usually happen when there are cars parked along a turn, but I ignore this completely. Over the course of the five years I had this car it prevented a collision twice this way.

KptMarchewa 4y ago
> Toyota has a good one: it gives me a beep and turns the screen red, but I have to start braking by myself, at which point it takes over and adjusts braking force so as to not hit whatever is in front of me. This way takes away the biggest advantage of this systems - that they can react before you do.
- Tade0 4y ago
  Thing is it does react before I do - in those two situations I would have probably continued on my path for too long and brake too late to avoid a collision.
  - KptMarchewa 4y ago
    It does not brake, just waits for your reaction.
toss1 4y ago
Wow, I've had the same thing in two different cars (Ford & Mazda), and it is awful. Always false alarms, never in time that I could brake at a time that I wouldn't otherwise, and distracting enough to be a real worry. The only situation I can conceive of it being useful is if the driver is falling asleep on the highway. What were the situations where yours triggered and actually helped?
- Tade0 4y ago
  First was my first day with glasses - I didn't anticipate that my depth perception would be so different so the sensor beeped when traffic in front of me stopped due to a changing light. Second was the car in front of me hitting the brakes when I was looking in the rearview mirror because both of us wanted to overtake the truck in front of us - that other person in the last moment decided not to do it. Or perhaps they weren't planning on that and just didn't see the truck - I didn't see them indicate.
  - toss1 4y ago
    Interesting thanks - could see how it could have helped in those situations. And in both, you managed to see/hear the warning and brake in time - impressive!

fuzzythinker 4y ago

Name and shame your SUV please. You may save lives doing so.

comfypotato 4y ago

This is my gripe with the safety of self-driving cars generally. The net crashes are much lower (very good thing) but the crashes that do happen take place under different circumstances. A good driver paying close attention will probably be better than the computer for a long time. The crashes being avoided are dumb read end collisions where the crash happened because the driver didn’t realize someone was stopped at the red light in front of them (just one example of an unfortunately common crash). Still looking forward to it when I’m older and a bad driver anyway. Can’t wait to have a personal vehicle that takes me everywhere.

toss1 4y ago

Yup. Our cars don't have auto-braking, but the "Pre-Collision Warning" or "Collision Alert" in the Ford Ranger and Mazda MX5 are both very annoying. They create enough of a distraction that I'm concerned that it could lead me into an accident. Yet it triggers too late to do anything about it, unless I simply train myself to reflexively hard brake whenever it goes off, which would almost surely get me rear-ended, especially since it's always a false alarm. They both mis-trigger fairly reliably if I'm in a bend in the road and there is a car or object on the outside of the bend, so it seems that they don't take into consideration that I've turned the wheel, or the steering angle. I've also had total mystery alerts, seemingly from spots or a shovelfull of dirt on the road surface. OTOH, the distance-keeping cruise control on the Mazda is very good, and I've used it for dozens of miles at a time on country roads, with and without traffic. These emergency auto-braking systems are clearly not ready for prime-time, except maybe for highway use, which is where they can do the most good anyway. I sure as heck don't want my car to auto-brake in any of the situations I've seen the "Collision alert" triggered. Some would have definitely caused accidents.