Has anyone cracked the code on Driver + ?

[Esap]

Well that explains the issue.

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[pc500]

I spoke with Rivian about self driving quite a bit prior to my delivery. Unlike other auto makers, they are not interested in self driving and only offer driver+ as a cruise control with lane-keep. It’s so far down on their list of priorities, if you’re expecting driver+ to be anywhere near Tesla, GM, Hyundai, etc., you’re not going to be happy for a long, long time.

I would like it to at least be like Nissan's cruise control on the Leaf. It can lane center on any road.

 

[srkz]

It's accurate down to exactly which lane you're in.

Source? Most GPS units in cars are only accurate to a couple meters when in motion - not accurate enough to declare a specific lane at highway speed.

All of my cameras were out for 2 months and Driver+ still worked no problem.

The Driver+ cameras are different than the Gear Guard cameras. You don't have access to the Driver+ cameras so you wouldn't know that they were out unless Driver+ stopped working.

 

[cjust2006]

Source? Most GPS units in cars are only accurate to a couple meters when in motion - not accurate enough to declare a specific lane at highway speed.

Me. You can be in an exit lane and Driver+ will tell you "Highway exit ahead, take control now." Change out of the exit lane, Driver+ icon comes right back on and I can resume. If lane lines have been repainted, it disengages because it doesn't match up with the map data.

 

[Tr4ckD4ys]

Me. You can be in an exit lane and Driver+ will tell you "Highway exit ahead, take control now." Change out of the exit lane, Driver+ icon comes right back on and I can resume. If lane lines have been repainted, it disengages because it doesn't match up with the map data.

It’s a bold assumption that Driver+ knows your location in the lane due to the GPS data though. Chances are very high there is several data points it considers to calculate your position on the road. GPS for sure is not accurate enough to determine this as it is artificially limited due to military-restrictions in how many meters/feet accuracy it displays. That is to prevent bad folks from using GPS for bad purposes. It’s always been like this - although it did become both technically and artificially more accurate over the decades.

Last time I checked (years ago), GPS was technically accurate down to 1-3 meters and artificially restricted for public use down to 10-20 meters. While this may have changed, I doubt it’s been fully removed - so it’s not likely GPS is what’s used to determine which lane you’re in.

 

[cjust2006]

It’s a bold assumption that Driver+ knows your location in the lane due to the GPS data though. Chances are very high there is several data points it considers to calculate your position on the road. GPS for sure is not accurate enough to determine this as it is artificially limited due to military-restrictions in how many meters/feet accuracy it displays. That is to prevent bad folks from using GPS for bad purposes. It’s always been like this - although it did become both technically and artificially more accurate over the decades.

Cameras are doing lane line and object identification for centering and avoidance. I have several examples in my city where I'm in a lane that used to merge but is now repainted *perfectly* as a continuing lane, and Driver+ has a problem with that lane at the exact spot where the merge used to happen. I have at least 5 known spots for this. If I'm not in that lane, it never has a problem. If that's not GPS, what reasonable camera programming would achieve this? Better yet, why wouldn't the camera be fine with that new lane? They'd likely just settle on "he's still on the highway, and there's still lane lines." It's clearly not matching with map data, which is only truly reconcilable via GPS.

 

[Tr4ckD4ys]

Cameras are doing lane line and object identification for centering and avoidance. I have several examples in my city where I'm in a lane that used to merge but is now repainted *perfectly* as a continuing lane, and Driver+ has a problem with that lane at the exact spot where the merge used to happen. I have at least 5 known spots for this. If I'm not in that lane, it never has a problem. If that's not GPS, what reasonable camera programming would achieve this? Better yet, why wouldn't the camera be fine with that new lane? They'd likely just settle on "he's still on the highway, and there's still lane lines." It's clearly not matching with map data, which is only truly reconcilable via GPS.

My assumption is that it’s a combination of gps, camera and steering input data. But GPS alone I just find not so realistic given the accuracy of it is the more than the width of an entire lane.

 

[cjust2006]

My assumption is that it’s a combination of gps, camera and steering input data. But GPS alone I just find not so realistic given the accuracy of it is the more than the width of an entire lane.

Another example is when I'm in a lane that's dead middle lane that's about to split. It knows and tells me to take over.

US highway lanes are 12 ft wide... You said GPS is accurate to a couple meters. Being dead middle of a lane puts you 2 meters away from the beginning of an adjacent lane, and a whole 4 meters to the middle of an adjacent lane.

 

[Tr4ckD4ys]

Another example is when I'm in a lane that's dead middle lane that's about to split. It knows and tells me to take over.

US highway lanes are 12 ft wide... You said GPS is accurate to a couple meters. Being dead middle of a lane puts you 2 meters away from the beginning of an adjacent lane, and a whole 4 meters to the middle of an adjacent lane.

But GPS isn't accurate to 12ft. It is accurate to 16ft for public use in the best case conditions (which driving at speed is not). The amount of situations where the GPS has you half-way in your lane by its own measures would render it useless for this.

 

[cjust2006]

But GPS isn't accurate to 12ft. It is accurate to 16ft for public use in the best case conditions (which driving at speed is not). The amount of situations where the GPS has you half-way in your lane by its own measures would render it useless for this.

https://www.gps.gov/systems/gps/performance/accuracy/

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