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  #193  
Old 08-17-2013, 08:59 PM
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Re: Adaptive Cruise Control Stop-go

I also want to add, I had the front collision warning set to far hoping it would engage so I could confirm it worked. Well some one slowed to make a right in front of me and it warned me to brake. there was no danger set at far, I will change it to near now.

ACC - tomorrow i will set the gap to the smallest and let AAC try its luck merging into the Holland tunnel. From what I saw today it will do just fine, even in bumper to bumper traffic! I will confirm tomorrow.
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  #194  
Old 08-17-2013, 09:21 PM
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Re: Adaptive Cruise Control Stop-go

Looks like the Jeeps with stop go are being referred to as the 2014.5 model year. Also another statement in there that it cant be added to the old 2014s.


Jeep Grand Cherokee WK2 - Cruise Control
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  #195  
Old 08-17-2013, 11:50 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by willjeep View Post
once the AAC stops you you get a message in the EVIC that says prepare to brake, AAC MAY disengage. MAY is the key word here because within 3 Mississippi's she will take off with no driver input.
Thanks for the info!

I'm curious though: Isn't this particular way they set the system up more dangerous than simply letting the system operate on its own? It sounds a bit scary to me that the vehicle could simple disengage without any input of the driver and run into the rear of the car in front of you - unless that would be avoided by the vehicle's active crash mitigation system.

But I guess they did some research on this to make sure that this is indeed the safest way....

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When it did disengage because it timed out a tap of the resume button was all it took to reengage and take off.
..or, in case the traffic ahead of you stopped again, brake, I assume?
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  #196  
Old 08-18-2013, 06:32 AM
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Re: Adaptive Cruise Control Stop-go

I will admit The 3 second time out is a bit of a pain. When it times out your at a dead stop so it's not like your going yo plow into the car in front of you. I will confirm this but I also remember hitting the resume to soon and getting the message to the effect of, ACC cannot engage stationary object detected. Cruse and ACC cruse are really designed for wide open roads, not city driving so if used as designed, it would not be engaging and disengaging often.
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  #197  
Old 08-18-2013, 08:00 AM
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There are so many variations of the ACC systems out there it's crazy, however I do think Chrysler has one of the lower spec ones..
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  #198  
Old 08-18-2013, 08:16 AM
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I don't remember if it was a movie or a commercial but I recall seeing on TV a guy driving a motor home who just walked away from the drivers seat and went somewhere in the back to get something. There was some joke involved in this something to the affect of not expecting cruise to do "everything" for you.

My general understanding is that there is a time interval that you are very focused on the fact you have stopped and cannot do anything else but focus on that one thing... If it were say 6 seconds, do you think you would have time to reach into the back seat for your cell phone you dropped? I guess the point is with 3 seconds you really can't. I am sure there is lots of mechanical reasons to not have the abs module applying the brakes in stop pressure for long periods of time but it appears it is more to do with the design purpose.

I don't think they ever designed it for upper Manhattan, but yes I suppose it could work. I believe they were more inclined to make something that made the stop/start/crawl of the interstates around the airport in Atlanta. Personally that is where I would like to do some testing.... Lots of ramp changes and stop crawl go fast/slow. I have used ACC (the original flavor) for this and really the only thing that is a pain is the fact the whole highway would stop for 1 second then go again. It was constantly crossing the threshold where I needed to hit the brakes and restart myself. Frankly the fact I would know EXACTLY when the vehicle is going to stop braking is much easier IMHO then trying to gauge with my foot in the air if we will hit the magic drop out speed. Of course in town drivers would not have experienced this as you would not have been turning on cruise after each light.

If they are going to improve the system to work in stop and go town traffic they will need to change the name to something different then "cruise" control. Because I certainly don't call driving on the Tamiami Trail in Florida in the afternoon cruising.... More like a slow bake.
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Old 08-18-2013, 08:47 AM
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The thing about today's world, is that there are not enough hours in the day, it seem that we are all to busy nowadays.. The things I see people do while driving is crazy, from reading news papers to eating while talking on the cell phone.

I think this technology is just around the corner.. If we're lucky could see it on next GC.. :-)

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  #200  
Old 08-18-2013, 09:07 AM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by 2mad2bad View Post
The thing about today's world, is that there are not enough hours in the day, it seem that we are all to busy nowadays.. The things I see people do while driving is crazy, from reading news papers to eating while talking on the cell phone.

I think this technology is just around the corner.. If we're lucky could see it on next GC.. :-)

I think it would take me quite a while to feel comfortable allowing my vehicle to do that!
It is cool though
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Old 08-18-2013, 09:35 AM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by willjeep View Post
I will admit The 3 second time out is a bit of a pain. When it times out your at a dead stop so it's not like your going yo plow into the car in front of you. I will confirm this but I also remember hitting the resume to soon and getting the message to the effect of, ACC cannot engage stationary object detected. Cruse and ACC cruse are really designed for wide open roads, not city driving so if used as designed, it would not be engaging and disengaging often.
willjeep after a dead stop how does it do in keeping up with the traffic in front of you? does it lag back and create a huge gap or get on the gas hard enough to get up with the flow quickly? Also in slower traffic at maybe 5-20mph how is the spacing between you and the car in front of you if you have it set on the tightest distance does it stay close enough with the car in front of you that you wont get cut off every few seconds? closer gap in these slower speeds? I drive in your type of traffic daily so just trying to understand the limits of the new system. Thanks!
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  #202  
Old 08-18-2013, 09:48 AM
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The spacing is in seconds so yes closer at lower speeds. I believe that whether it is "close enough" will depend on personal taste.
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  #203  
Old 08-18-2013, 10:08 AM
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Re: Adaptive Cruise Control Stop-go

Hmm, this traffic jam assistant on the Audi from the video will be available on the upcoming BMW X5, too (Start of production for this feature: 12/2013, works up to 25 mph as long as you keep one hand on the steering-wheel).
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  #204  
Old 08-18-2013, 10:35 AM
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Quote:
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Hmm, this traffic jam assistant on the Audi from the video will be available on the upcoming BMW X5, too (Start of production for this feature: 12/2013, works up to 25 mph as long as you keep one hand on the steering-wheel).
Those Germans are always ahead of the game, look at the gizmos on the new s class. I'm kinda looking forward to the 2017 Jeep Grand Cherokee as I know it's going to have crazy technology.
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