Approaching stopped traffic with Adaptive Cruise Control active

[PhoenixAir]

New owner, first post, I have several things to post but will start here.

When using ACC in the city it all works pretty
great with one big exception. When approaching a car stopped ahead in your lane (usually at a red light, traveling reasonably fast 50-55 mph) it takes much too long for the ACC to pick up the stopped car and start applying the brakes. If you have nerves of steel, you can wait and it will stop, usually very aggressively, but it is really hard to have those nerves.

It is particularly bad when it is 2 or 3 lanes wide and your lane has less cars than the other two. You end up screaming past the cars on the left or right before ACC applies the brakes.

It does appear there is a correlation between the 3D visual traffic display showing the vehicle and the awareness there is a car stopped. So the limitation is either the lidar/radar distance sensor range or the software just not reacting fast enough to the stopped car. Hopefully the latter and it can be adjusted.

 

[HC_79]

I think it will continue to improve over time but yes, it can sometimes be a little aggressive on the braking. For me it’s inconsistent though, sometimes it’s flawless and brakes as anyone normally would and other times in similar traffic scenarios I’m like “are you going to stop, are you going to stop”. It always does though.

Hence why it’s classed as a Level 2 system and needs to have an attentive driver at all times.

 

[knewman]

Still haven't found a vehicle that has an ACC system I trust in that kind of scenario. At least the Air has a comfortable system, never jerky accel/decel like most other cars.

 

[Alex]

When approaching a car stopped ahead in your lane (usually at a red light, traveling reasonably fast 50-55 mph) it takes much too long for the ACC to pick up the stopped car and start applying the brakes. If you have nerves of steel, you can wait and it will stop, usually very aggressively, but it is really hard to have those nerves.

This has been a problem since day 1 and I have always complained about this. It has improved ‘dramatically’ recently with the Highway Assist improvements. I often still get “Brake Now" warnings in the city, especially when the lead car is stopped and the approaching angle (horizontal/vertical) is not perfectly aligned. You would think the car would honor its own warnings. It also fails miserably when approaching stopped vehicles which are around a curve.

Still haven't found a vehicle that has an ACC system I trust in that kind of scenario. At least the Air has a comfortable system, never jerky accel/decel like most other cars.

Not for me. Even the older Tesla autopilot system, which only uses cameras, works better (also, the latest Tesla FSD system has never let me down)

 

[PhoenixAir]

This has been a problem since day 1 and I have always complained about this. It has improved ‘dramatically’ recently with the Highway Assist improvements. I often still get “Brake Now" warnings in the city, especially when the lead car is stopped and the approaching angle (horizontal/vertical) is not perfectly aligned. You would think the car would honor its own warnings. It also fails miserably when approaching stopped vehicles which are around a curve.

Not for me. Even the older Tesla autopilot system, which only uses cameras, works better (also, the latest Tesla FSD system has never let me down)

Agreed. Most modern cars today have ACC and handle this much better. This is what I would call a bug, either hardware, the sensors don’t have enough distance ability (at which point they should be using the Tesla model of imaging) or software, the monitoring loop is depending on the subsystem that manages the 3D display for a message if there is a car up there which is very poor design. I have been managing complex software projects my whole career, this is an area that needs attention.

Lucid…please Take a look!

 

[64right1]

New owner, first post, I have several things to post but will start here.

When using ACC in the city it all works pretty
great with one big exception. When approaching a car stopped ahead in your lane (usually at a red light, traveling reasonably fast 50-55 mph) it takes much too long for the ACC to pick up the stopped car and start applying the brakes. If you have nerves of steel, you can wait and it will stop, usually very aggressively, but it is really hard to have those nerves.

It is particularly bad when it is 2 or 3 lanes wide and your lane has less cars than the other two. You end up screaming past the cars on the left or right before ACC applies the brakes.

It does appear there is a correlation between the 3D visual traffic display showing the vehicle and the awareness there is a car stopped. So the limitation is either the lidar/radar distance sensor range or the software just not reacting fast enough to the stopped car. Hopefully the latter and it can be adjusted.

100% unaccceptable.

 

[bohica1956]

Sorry but my Lucid seems really normal compared to other systems I have had. My Audi E-Tron would scare me because of the late braking on someone stopped at a light and I am coming up behind them. It would seem to wait way late to brake and would scare the crap of me at time. I have a Nissan and same for worst, I trust it even less. In stop and go work well but coming up to someone fast at a stop light can be nerve racking. I just feel my Lucid is no better or worse. I would say though the Tesla is sightly better as my son has 2 and they seem to respond sooner.

 

[joec]

Pretty sure Lucid has never said ACC is meant for city streets / roads with occasional traffic lights. I know you CAN turn it on in some instances on those roads, but they make pretty clear in the manual that you are responsible for stopping for cars at red lights.

They call many of these ADAS features "Highway Assist" for a reason.

As far as I know, Lucid has announced nothing along the lines of what FSD attempts to do on city streets. That may be a future plan, but nothing that has ever been made public.

ACC will slow you down if there's a car in front of you moving along with you, and that car slows down. It will not stop for cars that are already stopped at a red light. (Well, it will, but not as part of ACC. That's the emergency front collision activating. And no, that wasn't designed for 50 mph.) The system simply isn't looking that far forward for stopped objects.

Be disappointed if you like, but the system is working as designed. And I highly recommend not relying on your car to stop for you in these situations.

This may change in the future, of course, but I wouldn't bank on it for at least a year or more, since they haven't even announced it yet.

 

[PhoenixAir]

Pretty sure Lucid has never said ACC is meant for city streets / roads with occasional traffic lights. I know you CAN turn it on in some instances on those roads, but they make pretty clear in the manual that you are responsible for stopping for cars at red lights.

They call many of these ADAS features "Highway Assist" for a reason.

As far as I know, Lucid has announced nothing along the lines of what FSD attempts to do on city streets. That may be a future plan, but nothing that has ever been made public.

ACC will slow you down if there's a car in front of you moving along with you, and that car slows down. It will not stop for cars that are already stopped at a red light. (Well, it will, but not as part of ACC. That's the emergency front collision activating. And no, that wasn't designed for 50 mph.) The system simply isn't looking that far forward for stopped objects.

Be disappointed if you like, but the system is working as designed. And I highly recommend not relying on your car to stop for you in these situations.

This may change in the future, of course, but I wouldn't bank on it for at least a year or more, since they haven't even announced it yet.

You couldn’t be more wrong. It is not Highway Assit but Dynamic Cruise. It is intended to work in the city, Highway Assist isn’t and is not available. Your logic is you’re not supposed to use it, even though it is available to use. That is truly ground breaking logic.

One of the last updates added stop and go logic into the dynamic cruise so the car automatically restarts after a stop, that would be amazingly useful on the highway. Each step, this one after adding lane change, is all about building the features needed one by one to get to self-drive.

And this idea this isn’t dynamic cruise but panic stopping? Where did you come up with that absurd notion, is the dash flashing with warnings? No, have you ever had your Lucid go into panic stopping mode? I can tell the answer is no.

BTW, no idea what car you are driving that doesn’t handle this circumstance but every car I have driven that has dynamic cruise handles this case better than the Lucid at this stage.

This is a software issue and you address software issues by reporting them so they are aware. You don’t have to read them, nor comment on them if you don’t agree.

 

[segbrk]

Your logic is you’re not supposed to use it, even though it is available to use. That is truly ground breaking logic.

You're not supposed to shoot people, even though guns are available. Yes it has fewer enforced guardrails than Drive Assist, but you're still expected to use it responsibly.

One of the last updates added stop and go logic into the dynamic cruise so the car automatically restarts after a stop, that would be amazingly useful on the highway. Each step, this one after adding lane change, is all about building the features needed one by one to get to self-drive.

It is. It's true. That feature is quite useful in stop-and-go traffic when you're right behind someone on a freeway. It's still not guaranteed to work when you initially approach standstill traffic at a high speed.

This is a software issue and you address software issues by reporting them so they are aware. You don’t have to read them, nor comment on them if you don’t agree.

They are aware, as it is documented in the manual. I'm not saying it wouldn't be nice to have some improvements in the future, but this is a known, documented behavior. It doesn't matter if some other cars do something different, the Air does not and presently isn't expected to.

The manual:

Note #3 and #5 in particular.

 

[joec]

You couldn’t be more wrong. It is not Highway Assit but Dynamic Cruise. It is intended to work in the city, Highway Assist isn’t and is not available. Your logic is you’re not supposed to use it, even though it is available to use. That is truly ground breaking logic.

One of the last updates added stop and go logic into the dynamic cruise so the car automatically restarts after a stop, that would be amazingly useful on the highway. Each step, this one after adding lane change, is all about building the features needed one by one to get to self-drive.

And this idea this isn’t dynamic cruise but panic stopping? Where did you come up with that absurd notion, is the dash flashing with warnings? No, have you ever had your Lucid go into panic stopping mode? I can tell the answer is no.

BTW, no idea what car you are driving that doesn’t handle this circumstance but every car I have driven that has dynamic cruise handles this case better than the Lucid at this stage.

This is a software issue and you address software issues by reporting them so they are aware. You don’t have to read them, nor comment on them if you don’t agree.

@segbrk said just about all I would say about the technical details of why you are extraordinarily mistaken on all accounts.

I will add that this is not how we treat other people on this forum. I suggest reading the guidelines and adjust your tone accordingly.

We’re here to help each other out. Not air our grievances or start whiny compliant fests. And for very certain we are not here to be jerks to each other.

Like I said, it’s perfectly fine to not be pleased about the state of Lucid’s software. There are other cars that do this better for sure.

But it’s NOT fine to attack other users for pointing out the obvious. That the manual clearly states what the car can and can’t do. And you would therefore be safer if you heeded its advice.

Enjoy your evening.

 

[A Fischman]

@segbrk said just about all I would say about the technical details of why you are extraordinarily mistaken on all accounts.

I will add that this is not how we treat other people on this forum. I suggest reading the guidelines and adjust your tone accordingly.

We’re here to help each other out. Not air our grievances or start whiny compliant fests. And for very certain we are not here to be jerks to each other.

Like I said, it’s perfectly fine to not be pleased about the state of Lucid’s software. There are other cars that do this better for sure.

But it’s NOT fine to attack other users for pointing out the obvious. That the manual clearly states what the car can and can’t do. And you would therefore be safer if you heeded its advice.

Enjoy your evening.

Well said.

 

[californiaboy935]

@segbrk said just about all I would say about the technical details of why you are extraordinarily mistaken on all accounts.

I will add that this is not how we treat other people on this forum. I suggest reading the guidelines and adjust your tone accordingly.

We’re here to help each other out. Not air our grievances or start whiny compliant fests. And for very certain we are not here to be jerks to each other.

Like I said, it’s perfectly fine to not be pleased about the state of Lucid’s software. There are other cars that do this better for sure.

But it’s NOT fine to attack other users for pointing out the obvious. That the manual clearly states what the car can and can’t do. And you would therefore be safer if you heeded its advice.

Enjoy your evening.

Well said. Here here.

 

[PhoenixAir]

Good enough. Don’t read my posts and don’t respond with massively illogical comments and I won’t point it the error in your logic.

And of course (again, use logic) there are many warnings about paying attention, and not depending on any “self drive” as it doesn’t have that capability. We are a litigious society, it is why we have so many lawyers.

All that said, this IS an area where Lucid can improve and that was the point of my original post. There is where part two comes in, reading is a good skill to have.

 

[PhoenixAir]

@segbrk said just about all I would say about the technical details of why you are extraordinarily mistaken on all accounts.

I will add that this is not how we treat other people on this forum. I suggest reading the guidelines and adjust your tone accordingly.

We’re here to help each other out. Not air our grievances or start whiny compliant fests. And for very certain we are not here to be jerks to each other.

Like I said, it’s perfectly fine to not be pleased about the state of Lucid’s software. There are other cars that do this better for sure.

But it’s NOT fine to attack other users for pointing out the obvious. That the manual clearly states what the car can and can’t do. And you would therefore be safer if you heeded its advice.

Enjoy your evening.

There is a single error in my original post. Nor is there an error in my response to the post with many factual errors. So if you want to be the truth sayer, start with the right person, yourself first, then the person who responded to my post.

 

[californiaboy935]

Good enough. Don’t read my posts and don’t respond with massively illogical comments and I won’t point it the error in your logic.

And of course (again, use logic) there are many warnings about paying attention, and not depending on any “self drive” as it doesn’t have that capability. We are a litigious society, it is why we have so many lawyers.

All that said, this IS an area where Lucid can improve and that was the point of my original post. There is where part two comes in, reading is a good skill to have.

Hey, since you’re new here, just a heads up: this isn’t really how things work in the Lucid community.

We all get frustrated with features sometime totally fair. And yes, Lucid has room to grow, especially on the software side. But going after other members or getting snippy when someone references the manual? That’s not the vibe here.

We are here to learn, share, and help each other out. Not to win arguments or talk down to people. If you stick around, you’ll see that Lucid owners are generally thoughtful, supportive, and engaged. Let’s try to keep it that way.

Appreciate you taking that into account moving forward.

 

[californiaboy935]

Hey, since you’re new here, just a heads up: this isn’t really how things work in the Lucid community.

We all get frustrated with features sometime totally fair. And yes, Lucid has room to grow, especially on the software side. But going after other members or getting snippy when someone references the manual? That’s not the vibe here.

We are here to learn, share, and help each other out. Not to win arguments or talk down to people. If you stick around, you’ll see that Lucid owners are generally thoughtful, supportive, and engaged. Let’s try to keep it that way.

Appreciate you taking that into account moving forward.

@PhoenixAir listen to Aretha Franklin, I think all @segbrk and @joec are asking for is…

And as fellow forum members we all deserve it

 

[borski]

 

[Denali_Dane]

 

[californiaboy935]