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Re: AI swerve wildly when changing lanes

Posted: 06 Mar 2017 15:26
by Reinhard
Moh1336 wrote:When I saw it happen there were four vehicles and only one of them jumped to the hard shoulder and back, the other three continued on their merry way as though nothing weird happened.
On the same lane?

Some lanes could be unaffected by this. Lane layout is simply inverted, starting from the right instead from the left. If the distances match, a lane could be continued, or showing only a minor effect.

I have never seen such behavior in ETS 1/2 not caused by an error in a map mod. But of course this proves nothing. Could be easily decided if the exact location would be known.

Re: AI swerve wildly when changing lanes

Posted: 06 Mar 2017 16:16
by piva
I can't reproduce on my computer too, even I see it not a one time.
I see flying cars that fly away in the sky near Oxnard stupid tuckstop, but I haven't video. :lol:
Now I see some strange in trafic behavior in 1.6 - traffic became more stupid, with the same traffic_data.sii parameters what was working well in 1.5.
I know that it is bug, but I don't have facts to show you something. :roll:

Re: AI swerve wildly when changing lanes

Posted: 06 Mar 2017 20:15
by IonutL
For the past 30 minutes, i tried to observe this bug and i just managed to saw it once, but it was pure luck.
I was parked outside the road on the grass for a couple of minutes already, when i decided that maybe it would need the truck to be in lane so the cars would change the lane in front of my truck. While trying to get on the road, there i saw it. After that nothing.
As you can see, pointed by the areas "encircled", the road doesn't have a smooth curvature. All vehicles, when passing through that segment, make a slight adjustment to their direction. My theory is that this bug can happen when it's necessary for a vehicle to change their lane right in that specific point. Now i don't know if the AI needs to overtake me, then go back to the first lane or only going from second lane to the first one.
[ external image ]

Re: AI swerve wildly when changing lanes

Posted: 06 Mar 2017 21:14
by Smarty
You can see several instances of jerky behaviour where that kink is in the first minute or so. The rest is just me being a dink trying to reproduce it. The trouble is the traffic starts to pile up and slow down after not too long...
Watch on YouTube
(video still has ~15 minutes of upload to go...)

Re: AI swerve wildly when changing lanes

Posted: 06 Mar 2017 22:14
by Reinhard
IonutL wrote:and i just managed to saw it once, but it was pure luck.
Reading this, I guess that my "left handed traffic" idea goes straight out of the window, then. Strange driving would happen all the time if this was the reason. Too bad, it would have been easy to solve.

I just tried the given coordinates and let the traffic flow a good while while using "warp 5". Could detect nothing unusual... Maybe I'm just lucky. It is not the first time that I've never encountered problems with the AI other people had.

Re: AI swerve wildly when changing lanes

Posted: 07 Mar 2017 11:22
by Tarso
Loutis it's the same i spotted on QA 36699


Some coords will help me to reproduce.

EDIT: nevermind i saw the coords on previous page

Re: AI swerve wildly when changing lanes

Posted: 14 Mar 2017 06:04
by pigbrother
Any news about this problem? Because it happened to me twice, one time in ATS on top of the Tejon Pass and one time in ETS2 near the tunnel between Geneve and Bern and if this is a map problem, not a general AI one, probably more coordinates would help debugging and I should file a bug report.

Re: AI swerve wildly when changing lanes

Posted: 15 Mar 2017 11:07
by piva
Problem not fixed in 1.6.0.10 and ETS2 same problem too.

Now begin jumping trucks :lol:
On I-80 saw twice jumping trucks accross lanes.

Re: AI swerve wildly when changing lanes

Posted: 15 Mar 2017 13:50
by Loutis
I was still unable to witness the issue sadly.

No idea how to reproduce it since any hint you gave me did not help.

Re: AI swerve wildly when changing lanes

Posted: 15 Mar 2017 15:02
by piva
Increate traffic density (maybe by mod), drive on I-80 and you see it. I don't know another solution.

EDIT. It's look like overtaking maneuver finished action give this issue, so I saw it when cars or trucks overtake me and when they must be rearranged to the right lane, this problem appear bit not every time, this is a big problem to find not permanent error.
I don't know another explanations. I'll hope that I can help you. If you have a queston, please ask.