Adaptive Cruise/LKA effectiveness

[Blackbeagle1]

My wife and I are considering getting a Telluride. We currently have a 14 Pathfinder and an 18 Subaru Crosstrek. The Crosstrek does have a great adaptive cruise (Eyesight). it's a camera system. It works very well. The car can go to a dead stop and resume again if there's traffic. Would this be the same on the Telluride? The only thing I don't like about the function of Eyesight is it doesn't slow down. It stops. So to give you an example: Let's say you're driving 55-70mph. YOu see a few miles ahead that traffic is about to come to a crawl. So I would take my foot off the gas and coast. The CrossTrek won't see the oncoming traffic. It can only see what's in front of it. So it keeps chugging along. Then once it detects the cars in front of it, it applies the brakes. But that's a bit unsettling for me. I'd rather it see that there's traffic ahead and just get off the accelerator and slow down.

How about the LKA feature? I've heard that it's a bit strong and has caused an accident (from a post I saw). The Crosstrek is subtle. It won't yank the wheel. But enough to make you pay attention. We love this feature as well.

Thanks people.

 

[Husker Soze]

My wife and I are considering getting a Telluride. We currently have a 14 Pathfinder and an 18 Subaru Crosstrek. The Crosstrek does have a great adaptive cruise (Eyesight). it's a camera system. It works very well. The car can go to a dead stop and resume again if there's traffic. Would this be the same on the Telluride? The only thing I don't like about the function of Eyesight is it doesn't slow down. It stops. So to give you an example: Let's say you're driving 55-70mph. YOu see a few miles ahead that traffic is about to come to a crawl. So I would take my foot off the gas and coast. The CrossTrek won't see the oncoming traffic. It can only see what's in front of it. So it keeps chugging along. Then once it detects the cars in front of it, it applies the brakes. But that's a bit unsettling for me. I'd rather it see that there's traffic ahead and just get off the accelerator and slow down.

How about the LKA feature? I've heard that it's a bit strong and has caused an accident (from a post I saw). The Crosstrek is subtle. It won't yank the wheel. But enough to make you pay attention. We love this feature as well.

Thanks people.

1. Yes...and better. The KIA SCC (Smart Cruise Control) is pretty amazing. It'll slow down based on the distance you set on the car ahead....and can come to a complete stop if necessary.
2. You can search the forum on this feature and get a lot of responses. I don't really use it. Bottom line is it's meant to keep you inside the lines....not to automatically drive you in center of the lane (and yes, there's a difference)

 

[Blackbeagle1]

This is radar or lidar-based? Last year, we took the Crosstrek to CO. Driving through the mountains was great in the Crosstrek. Again, the issue is going down hill around the bend through mountains. I can see traffic building up. But the car won't see it until there's a car in front of it> then it applies the brakes. Perhaps I'm asking for things that doesn't exist yet or can't be done. Nothing replaces the human eye. Plus the Crosstrek has the advantage that it's small and light. It can stop on a dime. But for a big rig like that, I would wonder how it works the braking.

 

[Tellthemride]

Similar topic has been discussed in this other thread.

Thread 'Smart cruise control and brake lights.'
Smart cruise control and brake lights.

The Telluride can maintain a max distance of 172 feet it should be theoretically be able to see the leading car a few hundred feet out further to be able to maintain that distance. In terms of reaction time, you can set the SCC system to react faster or slower (ie. brake/accelerate sooner rather than later). SCC is capable of driving up to 110 mph, so it should have the capacity to slow down to avoid collisions at high speeds. Everybody has different comfort levels though when it comes to how far out you want to start slowing down the car to a complete stop. In city traffic, I personally like to press on the brake earlier than the SCC would when approaching a red light behind another car even with reaction time set to fast.

All that said, it will not anticipate when traffic is coming to a halt, so it will always try to speed up to the set speed and will only slow down if the leading car slows down. For example, you just passed a standstill traffic and there is about a quarter mile to the next traffic jam, normally you wouldn’t floor it to 80 mph because you can see there is stopped traffic far ahead. The Telluride will not know this and will speed up to 80 mph if that is your setting and will only slow down when it sees the car ahead.

On supported major highways that KIA pre-determines with their HDA icon, SCC will be able to bring you to a complete stop and resume without any driver input. On unsupported roads and city roads SCC will come to a stop for you, but you will need to step on the gas pedal or press a button on the steering wheel to resume SCC.

LKA is pretty strong I would say if you didn’t have a grip on the steering wheel. It won’t do a full 90 degree turn but it is pretty close to 45 degrees at its max turn radius. If you were to countersteer the opposite direction LKA is trying to send you it doesn’t take much effort to override it. It is only active at speeds 40 mph or above. I have yet to see it steer me in the opposite direction of a curve.

When using SCC with detectable lanes on the highway, there is Lane Follow Assist, which will basically steer for you up to 45 degree curves. It will turn on or off at a drop of a dime whenever the computers decide the required conditions are not met, so always make sure you are paying attention when using.

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[wcarlson40]

1. Yes...and better. The KIA SCC (Smart Cruise Control) is pretty amazing. It'll slow down based on the distance you set on the car ahead....and can come to a complete stop if necessary.

Yes, I agree. I have driven both a 2020 Subaru and now have a 2020 Telluride. The Telluride is much better. Not perfect, it's not a Tesla. But it's the next best self driving vehicle out there.

I'm considering to buy the Comma AI system, which looks like it's now compatable with the 2020 Telluride. But, I'm not sure if it's worth the $1000+ investment. Anyone try this yet?

 

[Par4anne]

When I have my lane assist on, it has a strong pull to the left. Almost feels like an alignment issue. But when it is off, I don't have this problem. Is this typical? I drive quite a bit of highway miles and am wondering if at some point it will affect my tires.

 

[wcarlson40]

When I have my lane assist on, it has a strong pull to the left. Almost feels like an alignment issue. But when it is off, I don't have this problem. Is this typical? I drive quite a bit of highway miles and am wondering if at some point it will affect my tires.

Look at your two side mirrors while it is driving, and compare the distance of your two rear tires to the lane striping. I think you will find it has you centered. You are more likely driving in the right hand side of the lane when you are steering yourself. It took me a while to adjust to this, as the Telluride is a wider vehicle than what I was previously driving.

 

[Par4anne]

I thought "well that is crazy". And I tried it.... you were correct! Thank you!

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[noles1983]

I only have my in-laws Odyssey to compare against the Telluride. The Odyssey is god awful at redirecting you, it’s a violent steering wheel shake. The Telluride can be forceful but it’s super smooth while doing it. Zero issues with it so far.

 

[JGBJanet]

How is the LKA effectiveness at night, in the rain or with fading lane lines? Conditions that make it hard for my eyes to follow the lanes very far out?

 

[Tellthemride]

How is the LKA effectiveness at night, in the rain or with fading lane lines? Conditions that make it hard for my eyes to follow the lanes very far out?

I have not noticed any significant differences with LKA function at night or in the rain. Usually you will be driving with headlights on in those two scenarios, so it will help illuminate the lanes for the camera. Faded lines will still be detected to a certain extent. (ie. how much fade, or if there is a new lane painted more visibly in a construction zone).

 

[JGBJanet]

I have not noticed any significant differences with LKA function at night or in the rain. Usually you will be driving with headlights on in those two scenarios, so it will help illuminate the lanes for the camera. Faded lines will still be detected to a certain extent. (ie. how much fade, or if there is a new lane painted more visibly in a construction zone).

Thanks. My old Traverse has headlights that, to my thinking, point downward too much and don’t project far enough out for me to feel I’m seeing enough of the roadway at night. I tend to slow my speed down to feel safe. If available, I try to drive behind other traffic to see the projection of the road and upcoming curves from their lights and actions.

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[chunky_mike]

I love the Lane Follow Assist. It is amazing. Use it every day on my 20 mile commute. You have to keep an eye on it, of course, but I would have no hesitation at all turning around and checking on my daughters while the Telluride is driving for me. I wouldn't use it in the snow or bad rain, however.

 

[chunky_mike]

Yes, I agree. I have driven both a 2020 Subaru and now have a 2020 Telluride. The Telluride is much better. Not perfect, it's not a Tesla. But it's the next best self driving vehicle out there.

I'm considering to buy the Comma AI system, which looks like it's now compatable with the 2020 Telluride. But, I'm not sure if it's worth the $1000+ investment. Anyone try this yet?

I've also been very curious about the Comma AI system. Looks like it works with the Palisade. I wonder though how much of an additional benefit it would provide. Seems the Telluride can already do most of the things it can offer.

 

[Tellthemride]

I would have no hesitation at all turning around and checking on my daughters while the Telluride is driving for me

I would highly advise against this if you are using LFA on a bend. As i stated before, it can turn off at a moments notice without warning.

 

[SangariaSXNF]

The dash display will show you a car icon when your car is locked on to the car in front of you (not sure about trims less than the SX). SCC will bring you to a full stop when your car gets to a certain distance behind the stopped car in front of you and will automatically go forward when that car goes forward. This is true unless that car is stopped for more than 3 seconds. After 3 seconds you must manually resume by stepping on the accelerator or hitting the resume button on the steering wheel. I find this feature works great in heavy rain when the car in front of you is barely visible. I don't rely on it 100% but it allows me to keep a separation while allowing me to concentrate on staying in my lane. I have not found LFA to be effective in heavy rain.

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[Tellthemride]

After 3 seconds you must manually resume by stepping on the accelerator or hitting the resume button on the steering wheel.

Unless you are on a highway that has HDA support in the UVO maps while using SCC. No driver input needed to resume driving.

 

[aperry]

Man, I am loving SCC on the highway. Question: Does anyone understand the timing for driver feedback (if you take your hands off the wheel)? Don't get me wrong, I agree that it's best and safest to have hands on the wheel all the time, but I have a new Telly and I've been testing SCC to learn more about it and to build trust. I tend to see inconsistent timing from when I stop giving it feedback (take hands off wheel) to when it flashes a message on the screen and then shortly after starts beeping at me. Sometimes the message pops up maybe 45 seconds after feedback. But occasionally it's over a minute. Makes me wonder if it has an algorithm that determines the timing, or if it might be detecting "phantom" feedback (maybe over bumps?).

 

[SangariaSXNF]

Unless you are on a highway that has HDA support in the UVO maps while using SCC. No driver input needed to resume driving.

Confused.

 

[Tellthemride]

Confused.

See any of the posts below that confirm this matter. Driver input not needed to resume from a stop when using SCC with HDA.

I do not think that is entirely true. If I am not mistaken auto restart after a full stop is a feature of HDA. Without HDA, you have to press a resume button to make the car go from a dead stop. I did not have the cruise matched to speed limit (AUTO), but HDA was green and engaged. It started going again when the vehicle in front of me started moving, with no action required on my end.

You are not mistaken, as I stated previously in this thread, "auto restart" is an undocumented feature of HDA (at least I couldn't find any information on it). Without HDA, you have to manually intervene to restart from a standstill.

I can see where I might have made it confusing. I was responding to someone else's comment wrt to the documented function of HDA but neglected to change the context when I decided to post instead of respond. Sorry for the confusion.

HDA has 2 functions.

1: Automatic Speed Settings: If you set cruise to actual speed limit it will automatically adjust the cruise speed setting as you enter sections of highway with different speed limits. Due to the fact that most people do not drive at the speed limit this function is essentially useless imo.

2: Automatic Stop and Go:. Unlike normal adaptive cruise if your on a highway and get in a traffic jam, the system will automatically stop and go and does not require user interaction to do so even after being stopped for 3+ seconds. This feature is great and makes sitting through stop and go highway traffic at least a bit more tolerable especially with lane centering and lane keep assist on I have been able to sit and relax while the car does all the work in multiple situations like this.