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Old 06-30-2020, 08:16 AM   #26
Brahmzy
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Member#: 3293
Join Date: Dec 2000
Location: CO
Vehicle:
'20 Ascent
'15 XTerra P4X

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Quote:
Originally Posted by gathermewool View Post
Have you driven a vehicle with 1st or 2nd gen Eyesight to compare? I only use Eyesight when traffic is 2-5 on a scale of 10 and steady. When it gets too congested, I find Adaptive Cruise to react too slowly, and then over-react, e.g., it obviously can't see brake lights ahead, so it tends to wait until the car in front is braking, then brakes harder than I would like. I've experienced HARD braking where it was totally unnecessary; however, that usually occurs when someone is exiting the highway and Eyesight thinks the car is still in your lane when there's more than enough room for them to slow down and you to pass.

I think a more appropriate name for the system is (over) reactive cruise control. I simply find myself being a lot more cautious and efficient when it comes to driving in moderate (5/10) or worse traffic, where coasting and engine-braking can save you some stress, gas and brakes.
The Ď19-Ď20 Ascentsí Eyesight can see brake lights and react accordingly.
Bottom line is I have learned all of itís limitations and can predict exactly what itís going to do. There are situations where I just take over with a touch of a button, once the situation is clear I hit the button and bam - back in business. It is perfectly predictable. A few things - it cannot see cars in front of the car itís locked on to ahead of you. If you see a ****-storm brewing 2-10 cars down the highway and need to start slowing, you need to take over. It only reacts to the car immediately in front of you. This will only be solved if/when the cars are networked together, real-time, with low latency. So always pay attention.

Going down steep hills, fast or slow, is fine, until it sees brake lights, then it over-reacts with the brakes and can prematurely and overly apply the brakes. Remember itís algorithms are built to assume worst case as far as load/weights, and down a hill when the car in front of you brakes, you better be on the brakes quick with a 5,000lb trailer on your back, or very poor brakes that need replacing. It doesnít know any of these things, so it assumes worst-case. It has to accommodate for the possibility of a 5,000 tow load hanging off the back. It needs to make sure it can stop the car empty OR fully-loaded with 8 fat people, shot brakes, crap tied to the roof and a 5,000lb tow-load.

So, there are some situations, again, that are predictable, that you just take over real quick.
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Old 06-30-2020, 09:18 AM   #27
SCRAPPYDO
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Member#: 873
Join Date: Feb 2000
Chapter/Region: TXIC
Location: www.testdrivemylife.com
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2020 Accord / Ascent
Datsun 71 240Z & 68 2000

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I hate the CVT in my 2020 ascent, but since the refresh from the dealer it is better. From a performance point of view is the wrong looking glass for this car. My kids love it. I get 24mpg on the highway loaded up with 4 people a dog and cat. It is crazy comfortable and has plenty of passing power. AC is cold as ice and the kids love having their own captains chairs. For the job it was made to do, it does a respectable good job. It eats up miles like nothing else I have had. Well my Audi Allroad was pretty good.
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Old 06-30-2020, 11:08 AM   #28
gathermewool
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Chapter/Region: NESIC
Location: New England
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14 FXTT (hers)
15 Legacy 2.5i Prem (his)

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Good to hear about the latest Eyesight being able to see brake lights. I assumed the color vision was ONLY for better detection of yellow lane markings. In comparison, my lane departure warning will beep at me occasionally based on road imperfections and even shadows (rarely).

I totally get having to take over when necessary and realize that Eyesight will likely never be able to do more than react to the care immediately in front of you (in the fwd direction, I mean). I guess I also assumed that many people literally leave it on and let it do its thing no matter what, which is what I took away from your post, Bramzy. Is the system quick to brake when brake lights are detected or is that secondary to distance? I.e., will ACC now increase the distance from the car in front of you when it sees brake lights ahead as a preemptive measure, even if the guy is just tapping them.

To clarify a little, I do use ACC a lot (and like it a lot), since there’s very little traffic on my stretch of 95. Looking ahead, I’ll either turn it off or use the toggle switch to change speeds ahead of time, if it makes sense to simply slow down before the system even picks up on the much slower vehicle I’m quickly approaching or for someone I see will be merging in front of me, instead of turning the system off. I usually keep the distance setting at max, too.

When there’s some traffic for some reason I leave ACC off the entire time. It’s just too much work to continually push buttons to maintain the distance and speed I want. I much prefer leaving even more space when traffic is moderate and using cars way ahead to know when to coast or more gently brake well in advance. With how good Subies engine-brake, I can usually make it through moderate and even heavy, but not stopped, traffic without using my brakes much at all.

One other thing I don’t like that I didn’t mention earlier is that the distance setting isn’t adaptive. I understand why it is the way it is, and that I’m probably in the way way minority on this one. With the above info, I also adjust the distance setting for distance as I approach light traffic, if it makes sense to do so. However, with the system set to max distance from the car in front of me, I’ve had the system sense that the car in front of me is slowing down with a much faster closure rate than is actual and brake excessively, even though there’s still plenty of room between us to have allowed for engine-braking/coasting instead of ANY brake use at all. Can’t stand when that happens.

Anyway, thanks again for your response. I’m glad they’re making improvements to an already useful and practical system.

Last edited by gathermewool; 06-30-2020 at 11:17 AM.
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Old 07-01-2020, 04:19 PM   #29
keepclam
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Member#: 120244
Join Date: Jul 2006
Chapter/Region: NWIC
Location: Everett, WA
Vehicle:
2006 Legacy SE Sedan
2006 Legacy GT Ltd Wagon

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Surprised DriverFocus facial recognition didnít migrate from Forester.
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Old 07-01-2020, 04:45 PM   #30
dwf137
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Join Date: Oct 2007
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18 Highlander
XSR 700

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Quote:
Originally Posted by SCRAPPYDO View Post
I hate the CVT in my 2020 ascent, but since the refresh from the dealer it is better. From a performance point of view is the wrong looking glass for this car. My kids love it. I get 24mpg on the highway loaded up with 4 people a dog and cat. It is crazy comfortable and has plenty of passing power. AC is cold as ice and the kids love having their own captains chairs. For the job it was made to do, it does a respectable good job. It eats up miles like nothing else I have had. Well my Audi Allroad was pretty good.
The CVT killed it for me. Somehow it was worse than our '14 outback. My wife didn't really care, but I drove the decision. Plus, I didn't want potential CVT failure hanging over our heads on two cars - one is enough. We ended up with a Highlander, which ticks all of the same boxes as the Ascent.
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Old 07-01-2020, 05:17 PM   #31
SCRAPPYDO
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2020 Accord / Ascent
Datsun 71 240Z & 68 2000

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highlander is solid. So are the KDM twins.
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