Automatic Emergency Braking (AEB) Question

[LA Genesis]

I am looking at crossovers/SUVs and I am seeing the phrase "low speed automatic braking". Is that the same type of emergency braking that we have on our Genesis? I am under the impression the Genesis AEB also works at higher speeds.

 

[MikeyTG]

An excerpt from the manual:

"Brake operation
In a critical situation:
• The brake assist system enters
standby mode to react promptly
when the driver operates the brake
pedal.
• The vehicle automatically reduces
speed according to the severity of
the situation.
- Rapidly reduces speed when vehi-
cle speed is under 50 mph (80
km/h)
- Slowly reduces speed when vehi-
cle speed is over 50 mph (80 km/h)
• If the driver uses the brake pedal to
reduce vehicle speed, the brake
assist system operates to increase
braking efficiency.
• If the driver presses down hard on
the accelerator pedal or sharply
turns the steering wheel, the brake
assist system is canceled."

There is more to it, but this is the basics on how it operates.

 

[1FstYota]

AEB is nice but man it had almost messed me up once or twice pulling some fast and furious shit.

 

[LA Genesis]

So does it bring the car to a complete stop regardless of speed? It says reduces speed but does not indicate whether or not the car is brought to as full stop which I thought is what happens. Thanks for posting this MikeyTG.

 

[1FstYota]

Yes it can bring the car to a full stop, I have not gotten into that situation yet, but I did have one or two close call in which I was in control but I can feel the difference in braking pedal pressure cause AEB had to use more force than what I gave it to bring the car down to a almost complete stop.

 

[MikeyTG]

I had a full on emergency stop the other day. I was going about 55mph on a local secondary highway and the car in front of me came to a complete stop on the highway due to two 18 wheelers having some kind of pissing contest. By the time I realized it I was sure I would rear-end him. I can't say if the AEB system activated because I was watching his bumper rush toward me but I hit the brakes hard and the thing STOPPED like a champ, with room to spare. Luckily there was no one behind me or I'm sure I would have been rear ended. I could feel the ABS buzzing away, there was no tire squeal or steering effects, just rapid deceleration to zero. I spent the rest of the trip home thanking the cadre of engineers responsible for everything from the brake hardware to the multiple software modules that worked together to save my a$$ from a major crash.

 

[tuckerdog1]

Posted this video on another thread some time back. I still think it's pretty cool.

https://www.youtube.com/watch?v=fEZhGKi5F3g

Tuckerdog1

 

[glennk]

Love the thought of having this technology, but I'd still soil my pants

 

[Markr]

My Genesis was involved in a front-end accident a few months ago (someone in the other vehicle ignored a stop sign) and both headlights ($1800 each) and all the safety electronics up front ($5000) had to be replaced during the repair that took a day less than 3 weeks (their insurance company provided me with a rental vehicle for the entire period and I missed my Genesis). I've noticed that the front parking assist is sometimes a little out of whack (it'll alert periodically while just driving on the roads or even highway).

Question is - how do I test if AEB was properly repaired? Can I just point the car at something and let it stop itself? (scary!!!!)

 

[tuckerdog1]

My Genesis was involved in a front-end accident a few months ago (someone in the other vehicle ignored a stop sign) and both headlights ($1800 each) and all the safety electronics up front ($5000) had to be replaced during the repair that took a day less than 3 weeks (their insurance company provided me with a rental vehicle for the entire period and I missed my Genesis). I've noticed that the front parking assist is sometimes a little out of whack (it'll alert periodically while just driving on the roads or even highway).

Question is - how do I test if AEB was properly repaired? Can I just point the car at something and let it stop itself? (scary!!!!)

Watching some auto shows ( like Motorweek ), they set up an object that is soft & won't damage the car ( in case of AEB failure or poor performance ). Maybe something like a big mattress topper.

Tuckerdog1

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[EdP]

I did read the specifications for the AEB to work. I've thought about testing it with a barrier of paper or cardboard, but that won't work. It has to be metal and some mass/density to trigger it. I'm not about to test it by running into a bus

 

[1FstYota]

I've triggered the caution warning quite a few times. But like the rest I'm not gonna test it by voluntarily running into something.

 

[LA Genesis]

Always liked that video. I bought a blue Genesis shortly after watching this.

 

[MikeyTG]

I too would love to have a safe way to test the AEB. I would even pay to do it. It would be great if someone like consumer reports would sponsor a test day where they would give you the parameters that would test your system and supply a safe test obstruction to have a go at. Maybe pay an entry fee and, if you smash the obstruction, an additional charge to replace it.

 

[four]

Back when Acura RLs were first available with automatic braking in 2005 they were hard-stopping on steel plates in the roads covering construction digs.

Since it's radar based you could probably try a hard-stop response on a roll of mylar film stretched across the road. I'd be super interested to hear if it worked.

 

[armen212]

seemed to work just fine on my car. it was scary as hell tho and i couldn't look straight when the car was braking lol i was stuck looking at a 45 degree angle. it was around 40 mph on the 101 freeway. saved me from a claim.

 

[markpoisson]

I had a full on emergency stop the other day. I was going about 55mph on a local secondary highway and the car in front of me came to a complete stop on the highway due to two 18 wheelers having some kind of pissing contest. By the time I realized it I was sure I would rear-end him. I can't say if the AEB system activated because I was watching his bumper rush toward me but I hit the brakes hard and the thing STOPPED like a champ, with room to spare. Luckily there was no one behind me or I'm sure I would have been rear ended. I could feel the ABS buzzing away, there was no tire squeal or steering effects, just rapid deceleration to zero. I spent the rest of the trip home thanking the cadre of engineers responsible for everything from the brake hardware to the multiple software modules that worked together to save my a$$ from a major crash.

Same basic thing happened to me recently. Driving down the highway around 70 when all of the sudden traffic just stopped suddenly. AEB lit up, I jammed on the brakes and I was positive I was going to hit the guy in front of me. Even while I was HARD on the brakes, the AEB was also working and stopped me in time. All the while I watching my rear view mirror too. Utterly amazing. I too continued driving in sheer awe of the car and the engineering involved

 

[Scottish Guy]

So, still not quite sure how it works, if you don't hit the brakes you will sail into the back of something ? or does the system operate the brakes in time ?

All I get is a flashing red car logo in the dash.

My old Ford had the low speed collision protection, you could test it using a couple of
50 inch TV cardboard boxes [ empty of course ] in a parking lot , at 10-20mph it would stop in time.

Again, not sure if the Genny has this capability.

 

[EdP]

So, still not quite sure how it works, if you don't hit the brakes you will sail into the back of something ? or does the system operate the brakes in time ?

All I get is a flashing red car logo in the dash.

My old Ford had the low speed collision protection, you could test it using a couple of
50 inch TV cardboard boxes [ empty of course ] in a parking lot , at 10-20mph it would stop in time.

Again, not sure if the Genny has this capability.

Did you watch the video I posted back a bit? You get the warning first and should take action If you happen to be asleep at the time, the car will do it for you. As for teting, there is no easy way and from what I'm told, it has to detect some mass, like another car, not just a couple of boxes. I dont know if anyone has tried it

 

[lobsenza]

I have seen people post that it has worked for them. Watch the Genesis driverless convoy video for a demonstraction of it working: https://www.youtube.com/watch?v=fEZhGKi5F3g