Traffic AI merging problem

[Dreamineer]

I've been noticing that people, including myself, are having problems with the traffic AI suddenly crossing three lanes on a highway, not before stopping and doing a 90 degree turn (like this screenshot
http://cloud-4.steamusercontent.com/ugc/544147366423954120/41C8A190C4E4CE3B0F1D7545EA8AF2C055FCE775/ ). I've been trying to figure out why this is happening, but can't seem to fix it. It's really annoying and is causing traffic backups everywhere in the city. Does anyone know how to fix it?

[OneJasonBradly]

That looks like the next "On-Ramp" is a two lane on ramp and traffic is clearing the two lanes to allow the traffic onto the highway. Or you have a left side Off ramp too close by.

[Dreamineer]

It was just an example picture from Google to show the movement of traffic (the truck, for example), but it just happens in random locations of the highway. It has nothing to do with the amount or location of the ramps.

[kristofburger]

The best way to fix that is reduce traffic going to one given place, which is causing this kind of behavior.

[barrygreybeard]

sometimes rebuilding that stretch of road will cure it quickly or it can disappear over time.

In my experience its usually caused by vehicles that are already en-route when you change their path by editing a road. Depending on the speed of the simulation on your PC it can take a while to settle down.

[Dreamineer]

Originally posted by barrygreybeard:

sometimes rebuilding that stretch of road will cure it quickly or it can disappear over time.

In my experience its usually caused by vehicles that are already en-route when you change their path by editing a road. Depending on the speed of the simulation on your PC it can take a while to settle down.

Yeah, that's what I've been doing, but I don't want to have to keep doing it.

[OVKHuman]

I really hope this AI can be fixed, i have no problem merging 3 lanes but they stop traffic flow. Nobody in real life would ever do that. Theyd get themselves killed

[Dreamineer]

Originally posted by OVKHuman:

I really hope this AI can be fixed, i have no problem merging 3 lanes but they stop traffic flow. Nobody in real life would ever do that. Theyd get themselves killed

Yeah, no kidding, lol. I hope Colossal Order would try to fix it in the next update as it's driving (literally) me nuts.

[barrygreybeard]

CO have said that traffic is working as intended and it wont be changed, mainly I think because any change will require increase computing power, they don't want to up the PC specs for the game. So we have to wait for the next iteration, C:S 2....

[MarkJohnson]

Originally posted by OVKHuman:

I really hope this AI can be fixed, i have no problem merging 3 lanes but they stop traffic flow. Nobody in real life would ever do that. Theyd get themselves killed

I don't know where you live, but I see this every time I go to my sister's house in Seattle. Usually several times each trip up and back. Usually without incident as these fools are used to it. Sometimes I'll see a few of the rich kids racing each other up the highway in their Ferrari's Porsche's, Lamborghini's, etc. I've only seen one accident and that was someone trying to cut in front of the line. I think he didn't see/think it was there yet and cut off two cards and he had to go in the embankment to avoid an accident.

Anyway, the devs have said they will leave the AI alone. I think it simulates traffic jams just fine. Unless you look too closely. It's not a pretty way to jam traffic, but seems somewhat realistic on jamming traffic in heavy traffic. I mean it's a traffic simulator.

But the cure is to reduce traffic. You likely have excess imports.exports that compound traffic. Plus new areas draw in new cims, so traffic will be heavy until they all get moved in and everything matures.

All-in-all it is fine. It is also predictable and easy to work around. Just don't get fooled into thinking it's a road issue. It's a cims issues and there are lots of ways to reduce traffic.

[onezerorising]

I don't think this is an A.I. issue at all. I suspect it's something to do with one or all of the following:

It seems to happen occasionally when Move IT is used to reshape a road, and then that road is later replaced.

It seems to happen occasionally when Traffic manager has been used on a section of road (lane connectors) and is then removed, or the road is replaced.

It seems to happen occasionally when the six-lane highway road piece from the Network extension mod is used/removed/replaced (yep alll three!)

A fairly (!) consistent fix seems to be road deletion and rebuild, but it can be advantageous in some cases to use the Move IT mod's marquee selection tool to check for errant nodes (little green circles) and delete any that are found before the road is replaced.

[MarkJohnson]

It happens to me and I don't use mods. It's definitely normal and intended.

[barrygreybeard]

Originally posted by -DI- rmjohnson144:

It happens to me and I don't use mods. It's definitely normal and intended.

agreed, I dont use any of those mods either and have seen it in my cities when editing road layouts.

[onezerorising]

I agree that it may not be mod-based, and is 'normal'. I don't think it's intended though. I still think it's something to do with nodes being left behind after a re-route, rebuild.

[MarkJohnson]

Originally posted by onezerorising:

I agree that it may not be mod-based, and is 'normal'. I don't think it's intended though. I still think it's something to do with nodes being left behind after a re-route, rebuild.

I rarely rebuild roads. And it still happens on the default highways. It just happens.