Smart Cruise "Stop & Go" aggressive stops

[Thomby]

I've tried using smart cruise in traffic, both engaging it during stop & go traffic (where it defaults to 20mph), and before hitting traffic (so it's smart-following down from 50mph or whatever). In each case it accelerates from a stop a bit aggressively vs. a human who'd anticipate having to get back on the brakes, and it decelerates to a stop *very* aggressively, almost like a panic stop.

I'm wondering if this is what others have experienced, or if there's a setting change I'm missing -- anything in the menu, or does picking a higher smart follow distance (4 vs. 1 bar) change how abruptly it brakes? I'd like to use it in traffic but not if it's panic-stopping right on the lead car's bumper.

 

[Snicklefritz]

it's a smart 'cruise' not stop and go control. I think your expectations are misplaced.

 

[G70LEbyAdoom]

I've tried using smart cruise in traffic, both engaging it during stop & go traffic (where it defaults to 20mph), and before hitting traffic (so it's smart-following down from 50mph or whatever). In each case it accelerates from a stop a bit aggressively vs. a human who'd anticipate having to get back on the brakes, and it decelerates to a stop *very* aggressively, almost like a panic stop.

I'm wondering if this is what others have experienced, or if there's a setting change I'm missing -- anything in the menu, or does picking a higher smart follow distance (4 vs. 1 bar) change how abruptly it brakes? I'd like to use it in traffic but not if it's panic-stopping right on the lead car's bumper.

If you're in traffic, set the smart distance to be as far as possible or you will feel like you're going to run into everyone. Once the traffic clears up, you can set it back to whatever setting you had before.

 

[Thomby]

If you're in traffic, set the smart distance to be as far as possible or you will feel like you're going to run into everyone. Once the traffic clears up, you can set it back to whatever setting you had before.

Ok, so the higher distance at cruise carries over to the stop & go distance? Or just how early it brakes down? I obviously don't want it to leave ten car lengths or whatever in stop & go traffic as people would just be cutting in, but just to have it ease onto the brakes sooner.

 

[G70LEbyAdoom]

Ok, so the higher distance at cruise carries over to the stop & go distance? Or just how early it brakes down? I obviously don't want it to leave ten car lengths or whatever in stop & go traffic as people would just be cutting in, but just to have it ease onto the brakes sooner.

Its some combo of both, its just what I do and it seems to work fine.

 

[Thomby]

Its some combo of both, its just what I do and it seems to work fine.

Ok thanks, will give it another try

 

[18GT2]

I noticed this problem as well. Just because it says "smart cruise", doesn't mean you're not supposed to expect it to work in stop and go traffic. That's part of the convenience of having it. I disagree with what the other guy stated. That being said, once I set my following distance to 2 bars or higher, the problem went away.

 

[NS_Stinger]

Smart cruise is not programmed for use in stop and go traffic, its a for highway and freeway use, sure it will come to a complete stop and move again but its deifnitely not the purpose its designed for and it even says so in the manual.

 

[SanDiegoBlue]

I have found it is abrupt at times. Agree with above that longest 'distance' works best. It works acceptably in true stop and go (where the person behind you might expect a constant on and off of the brakes) , but slow and go is annoying for me as normally I would just ease off gas and not accelerate as fast thus avoiding brakes as much as possible. We all take risks based on what we know typically happens in traffic (or being able to see ahead of the car in front). The car (or any for that matter) does not have that ability to see or react based on learned history/risk (yet).

 

[Thomby]

Smart cruise is not programmed for use in stop and go traffic, its a for highway and freeway use, sure it will come to a complete stop and move again but its deifnitely not the purpose its designed for and it even says so in the manual.

If that were the case, it wouldn't have the functionality to go all the way to a stop and then resume (which it prompts you about). If they went to the trouble to add the functionality, at least make it behave reasonably well (or let me know what I'm doing wrong to make it so jumpy).

I have found it is abrupt at times. Agree with above that longest 'distance' works best. It works acceptably in true stop and go (where the person behind you might expect a constant on and off of the brakes) , but slow and go is annoying for me as normally I would just ease off gas and not accelerate as fast thus avoiding brakes as much as possible. We all take risks based on what we know typically happens in traffic (or being able to see ahead of the car in front). The car (or any for that matter) does not have that ability to see or react based on learned history/risk (yet).

Tried max distance, and it behaves reasonably well at low speeds, but when it comes to full stops it still stops very abruptly and I'm sure the person behind me thinks I'm not paying attention and then stopping short. Same with the resume from stop: instead of just letting off the gas to creep forward like I would do, it wants to accelerate up to speed, which usually means immediately jumping back on the brakes. Not pleasant or efficient.

 

[NS_Stinger]

If that were the case, it wouldn't have the functionality to go all the way to a stop and then resume (which it prompts you about). If they went to the trouble to add the functionality, at least make it behave reasonably well (or let me know what I'm doing wrong to make it so jumpy).


Tried max distance, and it behaves reasonably well at low speeds, but when it comes to full stops it still stops very abruptly and I'm sure the person behind me thinks I'm not paying attention and then stopping short. Same with the resume from stop: instead of just letting off the gas to creep forward like I would do, it wants to accelerate up to speed, which usually means immediately jumping back on the brakes. Not pleasant or efficient.

"If that were the case"? Go read your manual, it's not debateable, it says it right in the manual. I agree the way they named it is false advertising but I think its more about being able to come to a stop at a light in some situations but its not for creeping in bumper to bumper traffic.

 

[mfenske]

Agreed with the consensus here in that it's designed more for open road driving vs. stop and go.

 

[Saschaversum]

I use it all the time for stop and go traffic and love it. The only time where i dont trust it is im driving towards stopped traffic. Then its pretty sudden and abrupt. But for stop and go traffic it works great for me on the closest setting. Im in a EU Car, im not sure if there is any difference in behaviour.