Hows the "Lane tracing assist?"
03-12-18, 10:01 AM
#1
Driver
Thread Starter
Hows the "Lane tracing assist?"
Anyone tried out the new lexus "codrive" on the LS?
Mainly the lane tracing assist(LTA) where its supposed to keep you in lane on highways with minimum driver input(more active vs the current lane keeping assist).
Mainly the lane tracing assist(LTA) where its supposed to keep you in lane on highways with minimum driver input(more active vs the current lane keeping assist).
03-12-18, 06:17 PM
#2
yes I did it seems to work like my 2016es 300h vibrates when you cross the line but it wont drive by itself has some self steer
03-12-18, 07:23 PM
#3
Driver
Thread Starter
Last edited by reposado2; 03-12-18 at 07:26 PM.
03-13-18, 07:37 AM
#5
Driver
Thread Starter
03-13-18, 07:46 AM
#6
Instructor
If the LS500 system is similar to the one in my 2017 G90, the car has to actively be tracking both side lane markings for the system to be available. If the lane markings are clear, the car should actively steer to maintain a fairly centered position in the lane. My G90 did a really nice job of steering smoothly, even around bends in the road. The only problem was that it was so easy to use hands-free that it would set off an annoying audible warning to put my hands back on the wheel if I let it steer itself for more than 15 seconds. This annoying feature would squawk very often if I was driving with just a light touch of the wheel on long straight roads. It almost made me want to shut the whole LKA system off sometimes. I would assume the LS500 operates similarly, with a similar annoying squawk every now and then.
03-14-18, 11:38 AM
#7
Driver
Thread Starter
I suspect most of you only tested the LKA not the LTA.
I found this recent article that tested the LTA.
"Then, it was time to head out onto the road. The Dynamic Radar Cruise Control and Lane Tracing Assist (LTA) were the first to be tested, keeping the LS a set distance from the car in front and in the centre of the lane. Unlike the latest systems from BMW and Mercedes, the car allows for just 10 seconds of hands-free driving before it nags you to put your hands back on the wheel, rather than the usual 30 seconds. Nevertheless, the LS’ semi-autonomous driving performance worked just as well as – if not better than – other competing systems, rarely deviating from the admittedly clearly-marked lanes of Japanese roads and tracking straight and true even on the gently winding corners on the highway.
Toyota has been careful not to overpromise on its self-driving technology, such as using the word “automated” instead of “autonomous” in its communications – unlike a certain American electric vehicle maker. The greater restrictions placed on hands-free driving on the LS, then, is likely another example of this approach, rather than its lane-keeping system actually being inferior to others."
https://paultan.org/2018/03/14/drive...omment-4488696
I found this recent article that tested the LTA.
"Then, it was time to head out onto the road. The Dynamic Radar Cruise Control and Lane Tracing Assist (LTA) were the first to be tested, keeping the LS a set distance from the car in front and in the centre of the lane. Unlike the latest systems from BMW and Mercedes, the car allows for just 10 seconds of hands-free driving before it nags you to put your hands back on the wheel, rather than the usual 30 seconds. Nevertheless, the LS’ semi-autonomous driving performance worked just as well as – if not better than – other competing systems, rarely deviating from the admittedly clearly-marked lanes of Japanese roads and tracking straight and true even on the gently winding corners on the highway.
Toyota has been careful not to overpromise on its self-driving technology, such as using the word “automated” instead of “autonomous” in its communications – unlike a certain American electric vehicle maker. The greater restrictions placed on hands-free driving on the LS, then, is likely another example of this approach, rather than its lane-keeping system actually being inferior to others."
https://paultan.org/2018/03/14/drive...omment-4488696
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03-14-18, 11:48 AM
#8
I suspect most of you only tested the LKA not the LTA.
I found this recent article that tested the LTA.
"Then, it was time to head out onto the road. The Dynamic Radar Cruise Control and Lane Tracing Assist (LTA) were the first to be tested, keeping the LS a set distance from the car in front and in the centre of the lane. Unlike the latest systems from BMW and Mercedes, the car allows for just 10 seconds of hands-free driving before it nags you to put your hands back on the wheel, rather than the usual 30 seconds. Nevertheless, the LS’ semi-autonomous driving performance worked just as well as – if not better than – other competing systems, rarely deviating from the admittedly clearly-marked lanes of Japanese roads and tracking straight and true even on the gently winding corners on the highway.
Toyota has been careful not to overpromise on its self-driving technology, such as using the word “automated” instead of “autonomous” in its communications – unlike a certain American electric vehicle maker. The greater restrictions placed on hands-free driving on the LS, then, is likely another example of this approach, rather than its lane-keeping system actually being inferior to others."
https://paultan.org/2018/03/14/drive...omment-4488696
I found this recent article that tested the LTA.
"Then, it was time to head out onto the road. The Dynamic Radar Cruise Control and Lane Tracing Assist (LTA) were the first to be tested, keeping the LS a set distance from the car in front and in the centre of the lane. Unlike the latest systems from BMW and Mercedes, the car allows for just 10 seconds of hands-free driving before it nags you to put your hands back on the wheel, rather than the usual 30 seconds. Nevertheless, the LS’ semi-autonomous driving performance worked just as well as – if not better than – other competing systems, rarely deviating from the admittedly clearly-marked lanes of Japanese roads and tracking straight and true even on the gently winding corners on the highway.
Toyota has been careful not to overpromise on its self-driving technology, such as using the word “automated” instead of “autonomous” in its communications – unlike a certain American electric vehicle maker. The greater restrictions placed on hands-free driving on the LS, then, is likely another example of this approach, rather than its lane-keeping system actually being inferior to others."
https://paultan.org/2018/03/14/drive...omment-4488696
03-27-18, 09:29 AM
#9
Lead Lap
06-14-18, 03:00 AM
#10
I would think that's because relatively few vehicles have LTA. It is only included with the available Lexus Safety System +A package and not the standard + package. My vehicle doesn't have it. If LTA works similarly as LKA, then it shuts off if you take your hands off the wheel for a prolonged period of time (as the author points out above). I have tried it on clear roads and the LKA literally shuts off completely, leaving you to veer off the road. I would suspect LTA behaves the same once you take your hands off. Lexus is very careful not to turn the LS 500 into an autonomous driving car.
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reposado2 (06-14-18)
06-14-18, 07:45 AM
#11
Driver
Thread Starter
The LTA feature works very well, but it only activates when you turn on cruise control (and of course available with only the Safety+ Advanced package). And the car pretty much drives itself during the time period with hands-off, but then the system warns you to control the steering wheel. Otherwise, it shuts off after the warning.
06-14-18, 07:43 PM
#12
Driver School Candidate
The lane keeping works well on highways.
The steering wheel vibrates and then does gently steer. You can overpower it. Then it centers.
All this only if it sees stripes on both sides of the car.
You can see in the heads up display if it sees two lanes or one or none.
The steering wheel vibrates and then does gently steer. You can overpower it. Then it centers.
All this only if it sees stripes on both sides of the car.
You can see in the heads up display if it sees two lanes or one or none.
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reposado2 (06-14-18)
08-09-18, 05:58 PM
#14
My experience with LKA/LTA on my LS 500 has been pretty good. No "ping pong" effect has been noticed. However, the system warns you after about 10 seconds of completely hands-free. So I usually use a finger or two to lightly tap on the steering wheel to avoid the warnings. That way, minimal effort is involved, especially during long road trips like the ones between SF and LA. The system uses not only the lane markings, but also medium textures, side/shoulder gravels, anything that differentiate the lane material and sides of road/lane. All in all, it works reasonably well as a tool during long drives.
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reposado2 (08-10-18)
08-09-18, 07:11 PM
#15
Driver
Thread Starter
My experience with LKA/LTA on my LS 500 has been pretty good. No "ping pong" effect has been noticed. However, the system warns you after about 10 seconds of completely hands-free. So I usually use a finger or two to lightly tap on the steering wheel to avoid the warnings. That way, minimal effort is involved, especially during long road trips like the ones between SF and LA. The system uses not only the lane markings, but also medium textures, side/shoulder gravels, anything that differentiate the lane material and sides of road/lane. All in all, it works reasonably well as a tool during long drives.