5 ms·

my 2020 honda civic has lane detection and cruise control that keeps pace with the car in front of you... this isn't much different

narag 6y ago
Last car I owned detected lanes and cars approaching from behind. I had to disable the sound alerts. If someone had told me how many exceptions make the alerts bogus, I wouldn't have believed it. Not a single time the alerts responded to a real danger. On the contrary, I was alarmed for nothing, creating danger as I nervously looked around trying to understand what was wrong. Sensor that switched lights on or off was nice though.
- jacquesm 6y ago
  I got rid of a Mercedes C class that autobraked twice at random causing near accidents each time. The area where I live has a lot of narrow bridges and the autobrake would get triggered by the bridge posts. Traction on those bridges can be pretty uneven, especially when moist. First time came pretty close, second time I was prepared. There never was a third time. Stuff like that should work or be fitted to some test vehicle. That's not exactly an edge case.
  - dogecoinbase 6y ago
    Smart cars aren't smart. I've had a few rental cars over the last couple years that did autobreaking/speed control, and without exception it was unexpected in a way that made the situation less safe. It might be fine for someone who had only ever driven with those features, but adding them as new defaults is irresponsible at best.
  - dx034 6y ago
    Are you sure they got triggered by the bridge posts? These systems tend to exclude any non moving objects. I've driven several cars with emergency braking installed and it never reacted to a static object, even if I was headed for it. The only time I found it can mis-trigger is for cyclists that you'd be able to pass easily.
    - kalleboo 6y ago
      There are two kinds, one based on radar and one based on stereo camera. The radar systems have to ignore static items or they’ll detect overhead road signs as hazards and brake erratically. This is why Teslas run into static obstacles. The camera systems OTOH can handle static items. Our 2017 Suzuki Kei car has a stereo camera system and it will brake if you’re about to run into a car stopped at a red light.
    - jacquesm 6y ago
      Yes, 100% sure. Bridge posts come within 8" of the car and when you approach the bridge the return of the two (steel) posts is enough to trigger the radar based collision detector. Pretty dumb really, if there is nothing in front of the car and you're going forward you can't possibly collide with it and hard braking in a situation like that is much more dangerous than simply rolling through. I figure with the cars' GPS and a list of exceptions they could fix that sort of thing in a band-aid style fashion but they were not interested. I'm not going to wait to see what other edge cases aren't covered.
  - deleted 6y ago
    [deleted]
rimliu 6y ago
It should also have automatic lights, mine 2018 Civic has. And it works realy well. I had not expected it to be that good.

narag 6y ago

Last car I owned detected lanes and cars approaching from behind. I had to disable the sound alerts. If someone had told me how many exceptions make the alerts bogus, I wouldn't have believed it. Not a single time the alerts responded to a real danger. On the contrary, I was alarmed for nothing, creating danger as I nervously looked around trying to understand what was wrong. Sensor that switched lights on or off was nice though.

jacquesm 6y ago
I got rid of a Mercedes C class that autobraked twice at random causing near accidents each time. The area where I live has a lot of narrow bridges and the autobrake would get triggered by the bridge posts. Traction on those bridges can be pretty uneven, especially when moist. First time came pretty close, second time I was prepared. There never was a third time. Stuff like that should work or be fitted to some test vehicle. That's not exactly an edge case.
- dogecoinbase 6y ago
  Smart cars aren't smart. I've had a few rental cars over the last couple years that did autobreaking/speed control, and without exception it was unexpected in a way that made the situation less safe. It might be fine for someone who had only ever driven with those features, but adding them as new defaults is irresponsible at best.
- dx034 6y ago
  Are you sure they got triggered by the bridge posts? These systems tend to exclude any non moving objects. I've driven several cars with emergency braking installed and it never reacted to a static object, even if I was headed for it. The only time I found it can mis-trigger is for cyclists that you'd be able to pass easily.
  - kalleboo 6y ago
    There are two kinds, one based on radar and one based on stereo camera. The radar systems have to ignore static items or they’ll detect overhead road signs as hazards and brake erratically. This is why Teslas run into static obstacles. The camera systems OTOH can handle static items. Our 2017 Suzuki Kei car has a stereo camera system and it will brake if you’re about to run into a car stopped at a red light.
  - jacquesm 6y ago
    Yes, 100% sure. Bridge posts come within 8" of the car and when you approach the bridge the return of the two (steel) posts is enough to trigger the radar based collision detector. Pretty dumb really, if there is nothing in front of the car and you're going forward you can't possibly collide with it and hard braking in a situation like that is much more dangerous than simply rolling through. I figure with the cars' GPS and a list of exceptions they could fix that sort of thing in a band-aid style fashion but they were not interested. I'm not going to wait to see what other edge cases aren't covered.
- deleted 6y ago
  [deleted]

rimliu 6y ago

It should also have automatic lights, mine 2018 Civic has. And it works realy well. I had not expected it to be that good.