Cars stopping mid-road, causing massive traffic issues?

[Deeptronos]

So, as my city has been growing larger, I've been noticing a recurring issue that only seems to be solved by my manual effort. Cars will stop mid-road, on any type of road, for seemingly no reason. Whenever this happens, cars stack up behind it for for a while making a huge traffic jam, and I have to find the vehicle and manually delete it, which makes traffic return to normal. Is there any reason this could be happening? In Googling this, I saw a post saying that this could be caused by underground metro lines, but I don't think this is the issue since this issue can happen anywhere on my roads.

By the way, the only traffic mod I have is Traffic Manager: President Edition, but disabling that didn't seem to do anything.

[MarkJohnson]

Cars will stop to switch lanes if they can't get over from heavy traffic.

You can try the traffic mod, or finds ways to eliminate traffic. Mod should be last resort though.

Check your exports first. They should be at or near zero. otherwise they create unneeded traffic with no benefit at all.

[kristofburger]

Originally posted by -DI- rmjohnson144:

Cars will stop to switch lanes if they can't get over from heavy traffic.

This is not the problem though, apparently some mod causes vehicles to freeze in the middle of the road for no reason.

[MarkJohnson]

Oh, I thought that issue had been resolved a while ago. Maybe its conflicting mods?

[Deeptronos]

Yep, these cars tend to stop for absolutely no reason, traffic or not. You can see the issue I'm talking about in this screenshot, with the traffic on the bottom portion of the highway being caused only by a single, immobile vehicle.

[Jackrabbit]

I used to have this problem too. It might happen after upgrading or changing a road. Then, the game needs some time(especially in big cities) to recalculate the routes of every single car. After a little while, you'll notice traffic won't just stop anymore.
Another reason is that traffic sometimes gets confused. Maybe their destination disappeared.

[MarkJohnson]

Originally posted by Deeptronos:

Yep, these cars tend to stop for absolutely no reason, traffic or not. You can see the issue I'm talking about in this screenshot, with the traffic on the bottom portion of the highway being caused only by a single, immobile vehicle.

There are many things wrong with that picture.

First, never use streets to connect to major highways. They cause issues of their own from multilane intersecting.

second, never connect highway segments to switch directions (like police turnarounds). Highway's AI don't like left turns.

third, your intersections are too close together. You have the street merging onto the highway and needs to merge 3 lanes to exit to the other side. You can see them all backing up from switching lanes abruptly.

Try placing a proper highway interchange like a four-leaf clover and it'll probably cure the jam. Is there another pic in another part of the map that suddenly stops? or is this the only spot?

[Deeptronos]

@-DI- rmjohnson144 Yeah, I've since removed the streets there, that was more of a temporary thing to quickly alleivate another traffic issue I had (that I definitely caused by my own error, not a game bug lol).

Here's another instance of it happening, where the hearse stopped mid-highway for no reason. This is on one of the sections of highway that is already in the world when you start a new game, so I don't think this could be related to the way I made it or anything. This issue has also happened on regular streets, not just highways.

[OneJasonBradly]

http://steamcommunity.com/sharedfiles/filedetails/?id=1278548188
This one looks more to be what " ristosal " stated, a mod issue.
This one as well.
http://steamcommunity.com/sharedfiles/filedetails/?id=1278515970
A mod conflict.

[MarkJohnson]

Originally posted by Deeptronos:

@-DI- rmjohnson144 Yeah, I've since removed the streets there, that was more of a temporary thing to quickly alleivate another traffic issue I had (that I definitely caused by my own error, not a game bug lol).

Here's another instance of it happening, where the hearse stopped mid-highway for no reason. This is on one of the sections of highway that is already in the world when you start a new game, so I don't think this could be related to the way I made it or anything. This issue has also happened on regular streets, not just highways.

Definitely a mod issue. It really looked that way in the original picture, but it's hard to tell from a screenshot of moving traffic behavior.

The last time I seen this happen it was from conflicting mods though. At least that's what the OP stated at the time. I don't recall which one, but pretty sure it was a traffic mod.

But I haven't heard of this issue in a while, so check you are using current versions of traffic mods or ones that haven't been abandoned.

[Deeptronos]

Alright, thanks everone, I'll mess around with all my mods and see what happens!

[xeluht]

I have very similar issues, also, cars tend to stop on normal crossing yet there are no lights or stop-signs. I'm playing vanilla.

[kris44dad]

I've run into this same problem with all mods disabled.

[QWniiQ]

I have similar problems. When I click the vehicle, it shows its status as "returning to..." and there is not any route showing. Buildings have not moved or deleted, the route to the destinations also have no changes in ages. Oh and no mods in use.

[daboss9u9]

So how do we fix this?

[macluk]

I don't think there is a fix apart from removing mods - which is the worst advice in this case.
I had similar problem, it lasted for some time and usually kept starting throughout the game.
It's a bugger but only solution i've found was to:
- restart the game... I think you can safely save it (just in case as a different copy) once you notice it and start that game again - which is a long process for those like me, who have plenty of mods and assets and loading time is over 15 minutes
- if it's a local road - bulldoze it so the traffic can choose a different route and so u can play longer and once you decide to finish the game for the day, rebuild that road either before exiting the city or once you run it next time - usually restarting helps; removing that affected road is just for the time being

if it's a motorway, especially an entry from the outside connection - use:
https://steamcommunity.com/sharedfiles/filedetails/?id=2085403475
to move a node slightly closer to the edge (or create a new one and move that one closer to the edge) or just before the place where the cars stop
and then use:
https://steamcommunity.com/sharedfiles/filedetails/?id=1637663252
to direct the traffic from that affected lane by connecting it to a different lane in that new node