[Pigwich]

Yeah my brake thing screams at me constantly when I go down roads with curves and cars parked on the sides. It never hit the brakes though. Anybody want to do the experiment with a cardboard cutout of a person?

 

[One1whaoo.]

If LKA works at all, it's tough to tell. Pretty pathetic.

 

[srnewby54]

I've had the auto braking "alarm" go off a couple of times since we bought our Bolt a couple of months ago when cars have pulled out in front of me when I wasn't expecting it. Glad for that alarm. It gets your attention right away.

 

[ZoomZoom]

One thing that does appear to work well is the auto braking. I was going to pick up my son at the bus stop going about 25 MPH and he stepped out in the road in front of me about 100 ft away just to mess with me. I was already going pretty slow and was in L with my foot off the accelerator but it still detected him stepping out into my lane and I heard a fast beeping and saw a row of red lights blinking on the top of the dash. I have 1300 miles on it and that was the first time I had ever heard the brake warning. It didn't start braking harder but if he hadn't stepped back onto the sidewalk, I'm sure it would have. I was impressed that it detected him the moment he stepped into my lane. There was no delay.

Mike

In L it's hard sometimes to tell if it's the auto-brake or just L regenning, but my experience has been in the many instances that I get the 3 red LED's and the beeping, the car isn't going to brake effectively enough to make much a difference. If you don't do something, you're going to run down whatever it is it's blinking at us about.

 

[Sean Nelson]

In L it's hard sometimes to tell if it's the auto-brake or just L regenning

In the videos I've seen where they test auto-braking systems, those systems wait until the last possible second and then slam the brakes on very aggresively. I'm pretty sure that there would be no mistaking the difference.

 

[MrEasy]

In my experience, LKA just isn't reliable. It especially seems to not be able to detect double yellow lines. GM should at least fix this.

 

[1st Chevy]

Had my Bolt for 6 months and put on 5,000 miles now. Yesterday I crossed the road's center line to avoid some road kill in my lane. When doings so I got the rare resistance on the steering wheel and for the 1st time ever the audible warning alarm sounded at the same time. Had me wondering what was going on.

 

[MrEasy]

Well, that's even more interesting. LKA supposedly doesn't work when you are actively steering.

 

[XJ12]

Well, that's even more interesting. LKA supposedly doesn't work when you are actively steering.

Mine corrects when I'm steering. It's a gentle nudge. You can almost miss it. When I really notice it, is when the car and I both make the correction at the same time. Was really disturbing once when I moved over the yellow line to make room for a couple bicyclist and the car tried steering me back towards them.

 

[ZoomZoom]

Well, that's even more interesting. LKA supposedly doesn't work when you are actively steering.

Mine definitely corrects me when I'm steering. I don't use my blinkers, as it saves me over the course of a year about 1 or 2 miles of range. So when changing lanes on the freeway, it fights me about half the time. There's no consistency in it's 'operation' but it does actively fight me.

 

[zJed]

I'm not sure I understand the response of " If you can't keep your car in a lane, you shouldn't be driving" as a response to this question. I don't disagree with the statement, but it kind of misses the point. The philosophical question at hand, isn't "Should I use/depend on driver assist tech?" (the correct answers are Yes and No, respectively), it's whether or not the features included in the Premiere work well enough to even be useful. An I think the answer for LKA is a pretty clear no. Nudging the steering AFTER the car touches a lane marker isn't a great implementation. If it can sense when the tires cross/touch the lane markers, then it should easily be able to sense when you are within 6" of the lane marker. If it can sense both lane markers and provide gentle steering correction, then it really shouldn't bounce you between both markers like drunken ping pong ball. I've driven vehicles from Toyota, Nissan, Kia & Hyundai with LKA, and all of them implement it in a way that is at the very least, not useless. I recognize that the feature was never billed as Autopilot, or even "Active LKA", but it seems like it could be made "not terrible" with some minor tweaks. I also think that providing even modest improvements via an OTA upgrade would land pretty well in the EV community, and generate some great press for Chevy.

 

[XJ12]

I don't use my blinkers, as it saves me over the course of a year about 1 or 2 miles of range.

I've done the opposite. I now use my turning signal for everything to deactivate the LKA. Pretty sure the steering system is using more power to fight you than the blinker uses!

 

[ZoomZoom]

I've done the opposite. I now use my turning signal for everything to deactivate the LKA. Pretty sure the steering system is using more power to fight you than the blinker uses!

Oh geez, you have a great point there. I was also trying to also save my 12v battery. But yeah I suspect the rubber band resistance on the wheel is similar in usage.

 

[tfay412]

No, it def stinks. It makes you look like a drunk driver, even then at times it won't even work, but most of the time it works just fine as a drunk driver LOL

 

[borkbork]

I wouldn't feel comfortable in taking my hands off and let the LKAS, uh, handle the situation fully,

that's not what it's for. if that's how you're using it, you're doing it wrong.

 

[wesley]

that's not what it's for. if that's how you're using it, you're doing it wrong.

The technology’s name literally being about supporting the driver in “lane keeping”, I’m sure it started out as a rudimentary means to provide some sort of feedback and adjustment for the driver to keep the car within the lane while the driver is fully in control of the steering wheel. That’s mostly what I use it for, as elaborated in the comment following your quoted block.

But as one of the precursor technology to autonomous driving, many of the examples have grown beyond that, providing a more competent handling control (e.g. lane-centering). Bolt’s implementation falls short of that, which seems to be the entire point and gripe of this thread. Whether such “higher level” capability let’s the driver defer the control to the machine is debatable, of course.

 

[borkbork]

The technology’s name literally being about supporting the driver in “lane keeping”,

The LKA system does not continuously steer the vehicle.
It may not keep the vehicle in the lane or give a Lane Departure Warning (LDW) alert, even if a lane marking is detected. The LKA and LDW systems may not:

• . Provide an alert or enough steering assist to avoid a lane departure or crash.
• . Detect lane markings under poor weather or visibility conditions. This can occur if the windshield or headlamps are blocked by dirt, snow, or ice, if they are not in proper condition, or if the sun shines directly into the camera.
• . Detect road edges.
  . Detect lanes on winding or hilly roads.
  If LKA only detects lane markings on one side of the road, it will only assist or provide an LDW alert when approaching the lane on the side where it has detected a lane marking. Even with LKA and LDW, you must steer the vehicle. Always keep your attention on the road and maintain proper vehicle position within the lane, or vehicle damage, injury, or death could occur.
  

it's literally right there in the owner's manual. interpret that any way you want.

 

[wesley]

it's literally right there in the owner's manual. interpret that any way you want.

And I'm pretty sure I'm interpreting it as the manual suggests... as elaborated in the comment following your quoted block.

...rudimentary means to provide some sort of feedback and adjustment for the driver to keep the car within the lane while the driver is fully in control of the steering wheel. That’s mostly what I use it for, as elaborated in the comment following your quoted block.

I mean, I'm pretty much in agreement with you (and the manual) concerning LKAS usage. There's no need to go into argument on that.

 

[MikeyBolt]

I can see why it was implemented like that: it was meant as a safety feature that you can leave on at all times without it interfering with normal driving. To work like that, it has to be "off" while you are still in the lane and only activate when you start to exit the lane. Then, if it bumps you back into the lane, it has to be "off" again as long as you are in the lane and only turn on again if you start to exit the lane. BUT... it could certainly be improved! With this logic, often times it will correct you back into the lane (say bump you back left if you veer off the right) but then it is headed at an even sharper angle toward the left of the lane. And once you reach the left side, you are at a sharper angle than you were on the right and it just overshoots the line and heads into oncoming traffic.

Instead of that flawed logic, once it has to bump you back into the lane once, it should switch to a more proactive mode where it doesn't shoot you to the opposite side of the lane even faster. Once it has to intervene, it should try to keep you in the center of the lane until you touch the steering wheel. And I know it has the hardware to do it because if you are lucky enough to be able to let it continue for maybe a mile, it does give you the message to put your hands on the wheel: a light touch will deactivate the message.

The often-used example of how this can help is the driver momentarily falling asleep. Since you can have LKA enabled but lane departure warning turned off, my opinion is that LKA is more dangerous than not having it! If you have LKA off, you are more likely to veer off the right side due to road crown and on a two way roadway, you'd likely run off onto the grass shoulder and be woken up by the rough ride. With LKA on, if you fall asleep, the most likely thing that will happen is that you'll veer off the right side, LKA will bump you to the left, and you'll run into oncoming traffic and have a head-on collision before you can wake up.

Mike

 

[121 Kw]

The one in my company 2017 GMC is down right forceful. Its easy to feel the nudge when you get up to a line, and once about 2-3 feet over the line it'll bump you back in to the lane. On a sweeping turn, it'll make the whole turn sitting about 2-3 feet over the lane line (all while beeping at you to put your hands on the wheel). Doesn't do you much good if the side of the road is a big drop off though. I did expect more force out of the Bolts. I can just barely tell via the steering wheel it has it. My wife's 2016 Buick just beeps at you, no steering intervention at all.