ACC Actions

[SubSailor]

I may be misinterpreting what you are looking for, but you can see your car's current location on the Maps tab on Lucid's phone app. The car will recognize speed limit signs and offer to change the car's ACC speed to match if you press the steering wheel's left toggle button.

Got it....Thanks..still a pain to have to do it every speed limit change going into a town with progressive
Speed limit signs

 

[LucidDropkick]

The car will absolutely stop if there's a stopped car in front of it. Not just in HA, but in ACC. I have never had the car not slow itself down in time. Not sure what your experience is about here.

I've used HA and AAC for a couple thousand miles now. I was even testing HA before the update was released to the mainstream audience.

Despite all of that working the way I expect it to, there is no universe in which I would allow the car (or allow myself) to approach a stop sign at 55 MPH. There is a time for ACC and (what I can only assume is an expressway if the speed limit was 55 MPH and there were intersections with stop signs) the road you were on does not sound like the correct road to use it on.

If you're coming up to a stop sign ahead of you and you're going 55 MPH, you the driver should be aware of that at least 150 yards away, not 50.

Whatever fear you experienced, it sounds like you did that to yourself. ACC and even HA were never advertised as "self driving" features and under no circumstance should you ever rely solely on ADAS to drive. These features allow us to reduce the amount of attention we need to pay to the road and make it less stressful at the same time. They were never intended to replace a responsible driver who is aware they are driving a potential 5,300 pound death machine at extremely high speeds relative to it's surroundings.

Also, not sure what point you were trying to prove with the 6 month "reading the manual claim". The 1.X software was dramatically different and worse and there are plenty of things that changes that would reflect in the older versions of the manual.

The software is progressing too fast for you to "learn the car inside and out" by reading the owner's manual.

 

[Bunnylebowski]

Yeah the car for me slows to a stop slows to a stop when the car in front of me does.

In order to avoid the lurch that happens when you turn off ACC/HA, press the accelerator until the screen says override, then cancel ACC/HA and slow down. For the car to have a smoother release from ACC it would have to be in roll/creep mode instead of stop mode for regen, which defeats the purpose of regen.

As for highway assist biasing to the right as @Dortreo is experiencing, interestingly min feels like it biases to the left side of the lane. However when I look at the rear view mirrors it appears that the car is actually centered, so I think my tendency is just to be closer to the right side because my position in any left hand drive car is closer to the left. Nonetheless it’s scary when you have an 18 wheeler on your right around a corner and the car wants to be “centered” in the lane. I think the car does a good job of sensing vehicles in front and identifying lanes under good conditions, but is not currently sensing vehicles to the left and right yet so that makes HA a bit too rigid for my comfort.

 

[LucidNC]

Yeah the car for me slows to a stop slows to a stop when the car in front of me does.

So does mine, but it feels like a game of chicken!

In order to avoid the lurch that happens when you turn off ACC/HA, press the accelerator until the screen says override, then cancel ACC/HA and slow down. For the car to have a smoother release from ACC it would have to be in roll/creep mode instead of stop mode for regen, which defeats the purpose of regen.

That's what I end up doing, but it's often counter-intuitive, especially when I'm coming off a stretch of road that drops from 60mph to 45mph (e.g.) I keep my car in normal regen and have no problem with the slight jerkiness when driving normally and letting go of the accelerator .. in those scenarios the car does a great job of applying regen braking w/o feeling like my head's about to go through the windshield. I've had a number of ICE cars perform in the same way as the Lucid ACC (i.e. apply braking rather than coasting), so the issue isn't limited to EVs. That said, the MY we had didn't feel like it was braking in those same scenarios despite me having regen on. Point is, it could be executed better!

 

[SubSailor]

The car will absolutely stop if there's a stopped car in front of it. Not just in HA, but in ACC. I have never had the car not slow itself down in time. Not sure what your experience is about here.

I've used HA and AAC for a couple thousand miles now. I was even testing HA before the update was released to the mainstream audience.

Despite all of that working the way I expect it to, there is no universe in which I would allow the car (or allow myself) to approach a stop sign at 55 MPH. There is a time for ACC and (what I can only assume is an expressway if the speed limit was 55 MPH and there were intersections with stop signs) the road you were on does not sound like the correct road to use it on.

If you're coming up to a stop sign ahead of you and you're going 55 MPH, you the driver should be aware of that at least 150 yards away, not 50.

Whatever fear you experienced, it sounds like you did that to yourself. ACC and even HA were never advertised as "self driving" features and under no circumstance should you ever rely solely on ADAS to drive. These features allow us to reduce the amount of attention we need to pay to the road and make it less stressful at the same time. They were never intended to replace a responsible driver who is aware they are driving a potential 5,300 pound death machine at extremely high speeds relative to it's surroundings.

Also, not sure what point you were trying to prove with the 6 month "reading the manual claim". The 1.X software was dramatically different and worse and there are plenty of things that changes that would reflect in the older versions of the manual.

The software is progressing too fast for you to "learn the car inside and out" by reading the owner's manual.

@LucidDropkick - I do not want to get into my driving skills but at 80, I have driven quite a few cars and lived in 4 different countries with no accidents or tickets in over 65 years of driving. I raced numerous vehicles at Orange County International raceway when younger and lived in CA. I got my GT with 2.0.18 software to start and reviewed all the latest info prior to use. I had the Lucid rep in the car when we setup ACC and the road is a divided 4 lane highway but has numerous stoplights. I errored in stating stoplight singular...I meant the car did not even slow down for the cars stopped in front of me. I, once again, tried it and it definitely does not start slowing down until I push the brake. Do I want the software improved, of course... but many similar posts on this forum already so what is the point. Enough said since I had the service tech verify the anomaly and they did two factory resets. I will try again this morning since you state your car stops every time.

 

[joec]

Sounds like there’s a disconnect here between cars that are in front of you that slow down to a stop, vs cars that are already stopped long before you get to the light. I think ACC is not really up to that second task yet, as it even mentions that in the manual.

Hopefully it will improve soon. The car has the tools it needs to make those stops. But writing that software is easier said than done.

I get the whole argument that Lucid has to set the bar where Tesla is today, not where it was when it started. Which is why they are racing to catch up. But you can’t just will software this complex out of thin air. The timeline must be compressed, but it can’t be writing ten years of software in a year.

 

[HC_79]

So does mine, but it feels like a game of chicken!

I agree. There's been numerous times on the freeway where i've had to intervene because the car is approaching stopped traffic too quickly. I assume it will stop albeit very aggressively but when you have passengers yelling BRAKE in the car you know it's noticeable enough to not be working like it should.

 

[SubSailor]

Sounds like there’s a disconnect here between cars that are in front of you that slow down to a stop, vs cars that are already stopped long before you get to the light. I think ACC is not really up to that second task yet, as it even mentions that in the manual.

Hopefully it will improve soon. The car has the tools it needs to make those stops. But writing that software is easier said than done.

I get the whole argument that Lucid has to set the bar where Tesla is today, not where it was when it started. Which is why they are racing to catch up. But you can’t just will software this complex out of thin air. The timeline must be compressed, but it can’t be writing ten years of software in a year.

@joec Thanks, I cannot totally disagree but, as an engineer and launching numerous missiles during my career, we always took existing software and used it as our starting baseline to eliminate repeating "bugs" already repaired and allowed our software gurus to have a great baseline to incorporate requested or mandatory software actions in the new programs. BTW, the government was not too lenient letting us take time to fix our software.
I have checked the Lucid site and this forum but not sure they have updated the GT manual yet.

 

[hydbob]

@joec Thanks, I cannot totally disagree but, as an engineer and launching numerous missiles during my career, we always took existing software and used it as our starting baseline to eliminate repeating "bugs" already repaired and allowed our software gurus to have a great baseline to incorporate requested or mandatory software actions in the new programs. BTW, the government was not too lenient letting us take time to fix our software.
I have checked the Lucid site and this forum but not sure they have updated the GT manual yet.

Yea it would have been great if Lucid were able to take Tesla's software and improve upon it by adding in LIDAR data...but that wasn't possible and hence they are starting not from home plate, but maybe first base by leveraging their relationship with NVIDIA?

 

[MoniputerLM]

The car will absolutely stop if there's a stopped car in front of it. Not just in HA, but in ACC. I have never had the car not slow itself down in time. Not sure what your experience is about here.

I've used HA and AAC for a couple thousand miles now. I was even testing HA before the update was released to the mainstream audience.

Despite all of that working the way I expect it to, there is no universe in which I would allow the car (or allow myself) to approach a stop sign at 55 MPH. There is a time for ACC and (what I can only assume is an expressway if the speed limit was 55 MPH and there were intersections with stop signs) the road you were on does not sound like the correct road to use it on.

If you're coming up to a stop sign ahead of you and you're going 55 MPH, you the driver should be aware of that at least 150 yards away, not 50.

Whatever fear you experienced, it sounds like you did that to yourself. ACC and even HA were never advertised as "self driving" features and under no circumstance should you ever rely solely on ADAS to drive. These features allow us to reduce the amount of attention we need to pay to the road and make it less stressful at the same time. They were never intended to replace a responsible driver who is aware they are driving a potential 5,300 pound death machine at extremely high speeds relative to it's surroundings.

Also, not sure what point you were trying to prove with the 6 month "reading the manual claim". The 1.X software was dramatically different and worse and there are plenty of things that changes that would reflect in the older versions of the manual.

The software is progressing too fast for you to "learn the car inside and out" by reading the owner's manual.

The ACC in my car has NEVER worked properly when ALL of the traffic in front is stopped If there is a car in front that is moving then it works fine. We have three other cars as old as 2017 with ACC that do not have this issue. It is a bug that needs to be fixed.

 

[SubSailor]

Yea it would have been great if Lucid were able to take Tesla's software and improve upon it by adding in LIDAR data...but that wasn't possible and hence they are starting not from home plate, but maybe first base by leveraging their relationship with NVIDIA?

NVidia is an excellent company and I am confident that Lucid will excel in the coming months. I recently added some more LCID to my portfolio and expect it to climb as soon as we eliminate this crummy investment & worldwide doldrum we are in.

 

[dawktah LucidGT]

I expect my GT to slow down at stop sign when car in front is stopped. I was not in HA but ACC. I mentioned Tesla features because I think Lucid should use their features as a starting point. Maybe there is proprietary code but Lucid knew these features and could have started their software with a headscarf. Even after transitioning to a new baseline, they had a good baseline. By the way, I used this forum and 6 months of reading the manual before my GT arrived. Pretty sure I know how to drive it safely but I am always learning more idiosyncrasies of Lucid.

I would not expect this to happen. Personally I would never want a car to do this on its own. One AI slip up you're T-boned...

Sounds like there’s a disconnect here between cars that are in front of you that slow down to a stop, vs cars that are already stopped long before you get to the light. I think ACC is not really up to that second task yet, as it even mentions that in the manual.

Hopefully it will improve soon. The car has the tools it needs to make those stops. But writing that software is easier said than done.

I get the whole argument that Lucid has to set the bar where Tesla is today, not where it was when it started. Which is why they are racing to catch up. But you can’t just will software this complex out of thin air. The timeline must be compressed, but it can’t be writing ten years of software in a year.

Agreed, the 4 levels are for a following distance not to detect a stationary stopped car ahead. Maybe, when Highway Pilot is released?

The ACC in my car has NEVER worked properly when ALL of the traffic in front is stopped If there is a car in front that is moving then it works fine. We have three other cars as old as 2017 with ACC that do not have this issue. It is a bug that needs to be fixed.

I think this is going to be a feature of Highway Pilot. What other car other than Tesla sees stop signs?

 

[joec]

Yea it would have been great if Lucid were able to take Tesla's software and improve upon it by adding in LIDAR data...but that wasn't possible and hence they are starting not from home plate, but maybe first base by leveraging their relationship with NVIDIA?

Exactly. It's not as if Elon is sharing any of his software. Tesla's entire future depends on as much of what they are doing remaining proprietary as possible.

That's why I like Lucid's decision to partner with NVIDIA. Their stack might not be anywhere near as robust yet, but at least they will benefit from cars other than their own driving around recording data.

 

[MoniputerLM]

I would not expect this to happen. Personally I would never want a car to do this on its own. One AI slip up you're T-boned...



Agreed, the 4 levels are for a following distance not to detect a stationary stopped car ahead. Maybe, when Highway Pilot is released?



I think this is going to be a feature of Highway Pilot. What other car other than Tesla sees stop signs?

I am not talking about stop signs. It's any time there are cars in front that are stopped.

 

[joec]

As another fun data point, since I love banging on Tesla whenever someone brings up their supposed superiority: Yesterday, my Model 3 (slowly at least) as it was slowing approaching a stop light turned me over the yellow divider line and into oncoming traffic. This is the latest and greatest of their public betas.

The idea that we're going to be able to trust any of these systems anytime soon is serious acid trip territory.

I get why others want so much more, but for me, I'll just be happy if I can take a three-hour drive with my Lucid soon without having to constantly keep my foot on the accelerator. My Model 3 has never been capable of this, thanks to random phantom braking, an issue they refuse to even acknowledge.

Everything beyond giving my foot the occasional rest in highway traffic is gravy to me.

 

[joec]

I am not talking about stop signs. It's any time there are cars in front that are stopped.

Yes, this is a different problem to solve, and it doesn't appear Lucid has solved it yet. I believe this is what Traffic Jam Assist is supposed to eventually do.

 

[dawktah LucidGT]

I am not talking about stop signs. It's any time there are cars in front that are stopped.

At what distance? Each bar on the ACC/HA is about 1.5 car lengths, 4 bars would be 6 car lengths. Using rough car length that 100 feet. Average stopping distance for cars is 120 feet at 60mph. I guess I am looking for how car would know to stop unless it sense using lidar farther than 200 feet or more down the road. Which wouldn't be ACC/HA

 

[joec]

At what distance? Each bar on the ACC/HA is about 1.5 car lengths, 4 bars would be 6 car lengths. Using rough car length that 100 feet. Average stopping distance for cars is 120 feet at 60mph. I guess I am looking for how car would know to stop unless it sense using lidar farther than 200 feet or more down the road. Which wouldn't be ACC/HA

This is my understanding as well. ACC / HA is not looking that far ahead. So it can't see the stopped car until it's later than most of us would feel comfortable in order to stop safely.

Traffic Jam Assist is the one that is supposed to handle the stop and go stuff, I believe.

 

[Adnillien]

This is my understanding as well. ACC / HA is not looking that far ahead. So it can't see the stopped car until it's later than most of us would feel comfortable in order to stop safely.

Traffic Jam Assist is the one that is supposed to handle the stop and go stuff, I believe.

LiDAR is looking out 150-200m. Lucid's Robosense LiDAR claims 150m. 77GHz radar will see further but with much lower angular resolution. With low angular resolution it is very difficult to distinguish between stationary object. All the systems have a bandwidth limitation to how many stationary objects can be identified tracked. Hence, the stopped car scenario is a difficult case for ADAS systems.

 

[MoniputerLM]

This is my understanding as well. ACC / HA is not looking that far ahead. So it can't see the stopped car until it's later than most of us would feel comfortable in order to stop safely.

Traffic Jam Assist is the one that is supposed to handle the stop and go stuff, I believe.

All I know is that the ACC on every car that I have driven, other than Lucid, works correctly.