Lane Centering on 2 Lane Highways

[lightningandmache]

1) On 2 lane highways is the car supposed to be centered or shifted over to the right? I feel like some times it is shifted (I prefer this distance from oncoming) and others it is centered.

2) It feels like on non-bluecruise roads the car will slow itself down for curves, but not all of them?

Has anyone else noticed these issues?

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[Mach-Lee]

There is a difference between lane centering (blue bubble around car icon with cruise control engaged) and the basic lane-keeping system when cruise isn't engaged. With lane centering engaged, you should be centered in the lane; there should be no bias unless there is a truck beside you on the freeway. With basic lane-keeping, you'll bounce off the lines.

If you have lane centering properly engaged, you should be able to let go of the steering wheel for about 10 seconds, and the car stays centered in the lane without drifting.

When there is oncoming traffic, you should stay centered in the lane (that is the desired behavior). Shifting over towards the white line is more dangerous for other road users (e.g. pedestrians and cyclists on the shoulder). I see some old people do this (hug the white line or drive over it); it's a bad driving habit, and they're just waiting to kill a cyclist, or hit a mailbox or parked car IMO. In driver's ed, they teach you to always stay centered in your lane (even if you're scared) unless you are passing a pedestrian, cyclist, or obstacle in the road.

Adaptive speed assist needs to be turned on in settings to slow down for curves. Otherwise, you're experiencing Curve Control kicking in, or the road geometry is poor in the area you're driving in and can't anticipate the curve.

 

[lightningandmache]

Thanks for the reply. I'm definitely talking about lane centering + acc. It feels to me most drivers shade slightly right from dead center to be further from undivided oncoming traffic, especially through curves for peace of mind. Maybe it's just where I'm at. But I do feel from checking mirrors sometimes it does do this, but I haven't had someone drive behind me.

I do have speed assist on (despite the incorrect sign reading in some spots), so maybe their maps don't have all curves properly tagged because there are a few it does not slow.

Does yours take curves with a natural arc? I feel mine doesn't.

 

[Mach-Lee]

Does yours take curves with a natural arc? I feel mine doesn't.

No. I have BC 1.3, which does not have very good curve stability with lane centering outside of mapped roads. It sort of seesaws the steering wheel on curves, which necessitates you to override the steering. BC 1.4 and 1.5 have much better steering on non-mapped roads.

What year is your car? (You should update your vehicle in account details so it shows up.)

 

[Kamuelaflyer]

I use hands on BlueCruise (ACC plus LC) regularly. For me the car slowly drifts between centered and too close to the divider line for the oncoming traffic then back again. It’s significantly better than BC 1.0 was but it still slowly drifts. Most of my driving is on rural and semi rural two lane roads with proper markings but minimal shoulders. The sparse shoulder may or may not have something to do with that.

 

[AnimalChin]

With almost every pothole being in the "groove", yes, hugging the white line is a bad driving habit when you intend to hit the most potholes possible.

(hug the white line or drive over it); it's a bad driving habit, and they're just waiting to kill a cyclist, or hit a mailbox or parked car IMO. In driver's ed, they teach you to always stay centered in your lane

 

[cwaig]

No. I have BC 1.3, which does not have very good curve stability with lane centering outside of mapped roads. It sort of seesaws the steering wheel on curves, which necessitates you to override the steering. BC 1.4 and 1.5 have much better steering on non-mapped roads.

What year is your car? (You should update your vehicle in account details so it shows up.)

Bluecruise doesn’t activate outside of mapped areas.

 

[Kamuelaflyer]

Bluecruise doesn’t activate outside of mapped areas.

Adaptive cruise control is branded blue cruise hands on. Tte changes made in 1.3 aldo changed and improved ACC

 

[lightningandmache]

No. I have BC 1.3, which does not have very good curve stability with lane centering outside of mapped roads. It sort of seesaws the steering wheel on curves, which necessitates you to override the steering. BC 1.4 and 1.5 have much better steering on non-mapped roads.

What year is your car? (You should update your vehicle in account details so it shows up.)

'22 Rt 1.

On *gradual curves* it does fine but when sharper I do guide it through because of what you mentioned, which isn't bad because it stays active and takes back over after and it's still driving 90% of the time. For actual sharp curves I don't trust any system, so I like to steer those myself anyways, but medium-sharp would be nice to see improvement. Not sure how to characterize "sharpness".

I've also noticed the car does a good job NOT taking offramps & exits (on smaller highways), but it will sometimes try to take a left turn lane. Does yours do this? I saw someone mention theirs tries to take exits which had me scratching my head.

 

[lightningandmache]

I use hands on BlueCruise (ACC plus LC) regularly. For me the car slowly drifts between centered and too close to the divider line for the oncoming traffic then back again. It’s significantly better than BC 1.0 was but it still slowly drifts. Most of my driving is on rural and semi rural two lane roads with proper markings but minimal shoulders. The sparse shoulder may or may not have something to do with that.

I don't have much drifting TOWARD the center line. How often does yours do that? That would cause me to stop using it.

Do you let it do curves or do you guide it through? I don't trust it, so I just guide it and then release control once it locks in again.

Does yours try to take exits or left turn lanes?

I'm starting to wonder if the different experiences are camera calibration issues?

 

[Kamuelaflyer]

There are no divided, controlled access, surveyed or otherwise, roads on this rock so there are no exits in the sense you’re thinking of. There are some very long right turn lanes though.

In ACC/BCHO the car won’t charge lanes unless I tell it to. The roads I use for getting to Waimea or Kona are quite curvy, ACC/BCHO can handle most reasonably well. Those that it can’t I simply make it go how I want it to go. I generally have predictive speed control off as well, as since the change from “speed sign recognition” to also predicting speed for curves, it’s turned into a paranoid, old man (meaning older than me) driving a barely functional 1986 Toyota Corolla when approaching almost every curve.

 

[Space_Pony]

Bluecruise doesn’t activate outside of mapped areas.

So if you don't pay for BC you lose

Adaptive cruise control is branded blue cruise hands on. Tte changes made in 1.3 aldo changed and improved ACC

This is what Ford shows as BlueCruise.

 

[cwaig]

That’s what I understood - the hands free system is BlueCruise (high detail mapped highways only). The hands-on is just lane keeping - I’ve never seen it referred to as anything else… (U.K., YMMV).

 

[Kamuelaflyer]

This is what Ford shows as BlueCruise.

Yes I understand that graphic. Ford also calls ACC with Lane centering Hands on Blue Cruise. In addition, refer to pure #1, the op is definitely not talking about BC on a surveyed, divided and controlled access road.

 

[TechWhisperer]

When my BC subscription runs out, I'm putting in a comma.ai.

I've had one for over 2 years and over 70k miles in my 22 Chevy Bolt EUV and it does very well.

It reminds me of all the good things blue cruise is and eliminates most of the drawbacks.

All these things are drivers aids and are not self driving.

I like that comma works on all roads, and does a really good job with lane centering. I drive on a lot of 2 lane highways in the North Bay.

We primarily drive the MachE on the highway, so BC has been helpful. I do get annoyed at how it disengages more often than I would like, especially during early evening during sun down.

The comma does not have issues with sun glare. It has very good cameras that seem to not be affected.

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