Front collision warning fluke/ghost

[GlmnAlyAirCar]

What does your brain do with things that happen all the time but don't mean anything? It ignores them.

Right. I work with navigation and control systems where human-factors issues related to alarms are a critical concern. "Alarmageddon" is the term we use to describe over-alarming of the end user. The problem with over alarming is that it trains the operator to ignore the alarm. So, no, false alarms are in fact a major human factors issue.

 

[pdxgibby]

If you change my words from "periodic" to "all the time" then I would completely agree with you.

 

[ilovemycoffee]

just noticed this phenomena yesterday, never saw it before. I'll try to send a bug report if it happens again. It was a straight residential street with cars parked on the side of the road. I'm glad no one was behind.

 

[GlmnAlyAirCar]

just noticed this phenomena yesterday, never saw it before. I'll try to send a bug report if it happens again. It was a straight residential street with cars parked on the side of the road. I'm glad no one was behind.

Are you saying AEB activated? All the other reports indicate just front collision warning.

 

[ilovemycoffee]

Are you saying AEB activated? All the other reports indicate just front collision warning.

yes, I was only going 25 mph, so it was very slight but noticeable

 

[GlmnAlyAirCar]

yes, I was only going 25 mph, so it was very slight but noticeable

I find that hard to believe. AEB is supposed to only engage to lessen the impact if an accident appears unavoidable. A slight brake activation does not fit this description. Were you using TACC at the time.

 

[AlbertOnMars]

I had this happen a week ago. Was driving on an interstate, in the middle of three lanes at night. No cars around me, probably going around 75 mph. All of a sudden the collision alarm activated and I saw the flickering, red car directly in front of mine on the dash display. Only lasted a second or two and then went back to normal. Braking did not activate. Was a bit apprehensive about it happening again, but I've only seen it that one time so far.

 

[ilovemycoffee]

I find that hard to believe. AEB is supposed to only engage to lessen the impact if an accident appears unavoidable. A slight brake activation does not fit this description. Were you using TACC at the time.

I was using TACC, because the street was a speed trap and I wanted to keep it at the speed limit.

 

[Zythryn]

yes, I was only going 25 mph, so it was very slight but noticeable

I suspect AEB did not engage, it is VERY noticeable.
Did you have an error message indicating AEB is temporarily disabled afterwards? If AEB engages, that alert will appear until you stop and restart the car.

What more likely happened was (as this happened to me), is you pulled your foot off the accelerator enough for regenerative braking to slightly slow the car.

 

[ilovemycoffee]

Looks like the ghost occurred for my wife. No braking for her, just the alarm and red car showing up on dash. I rebooted both the dash and the monitor, hopefully it doesn't show up again.