Highway exits backing up for no reason.

[germanogre]

This probably has to do with my layout of on / off ramps, but traffic is constantly backing up on highways as everyone lines up on off-ramps, then immediately get back on the highway at the nearest on-ramp without going anywhere else.
I've built two cities using a ramp layout that exits close to the highway to a road traveling perpendicular to it underneath. The ramps connect to an intersection creating a six-way stop (probably the problem).
Anyone else have this issue?

[Ottomic]

Could you please attach a screenshot? Another one from the same place with the traffic layout would be peachy.

[Monkeysaur]

Check you don't have an accidentally placed one way road anywhere, sounds like they have nowhere to go.

[Vandalen]

if a road does not work, no cars would use it...

[germanogre]

http://steamcommunity.com/profiles/76561198033708584/screenshots/#scrollTop=0

I've been experimenting with layouts using lots of roads. Possibly too many.

[Vandalen]

so where is the problem? There is is a massive traffic jam right on your screen and ths is the cause of the problems in the middle of your picure.

[Buck]

Originally posted by germanogre:

http://steamcommunity.com/profiles/76561198033708584/screenshots/#scrollTop=0

I've been experimenting with layouts using lots of roads. Possibly too many.

That design isn't too good imo. The traffic is getting backed up due to the complex intersections.

[germanogre]

There is a jam on both sides, on both off-ramps. The problem is that most of that traffic gets off the highway, sits at the light, then gets back on the highway using the on-ramp right across the intersection. They then do the same thing at the next ramp, deliberately taking a much longer (time wise) route than if they had just stayed on the highway.
I figured the design had a lot to do with it, and was hoping that the traffic would figure out a better path eventually. Layout aside, this still seems to ba a bug to me.

[FireFlower]

Yes, you're building too short lanes between intersections and that causes jams because automatic traffic lights can't keep up with that many cars and complexity

[BlackAlpha]

Originally posted by germanogre:

There is a jam on both sides, on both off-ramps. The problem is that most of that traffic gets off the highway, sits at the light, then gets back on the highway using the on-ramp right across the intersection. They then do the same thing at the next ramp, deliberately taking a much longer (time wise) route than if they had just stayed on the highway.

It's a game bug. For that reason I stopped creating on and off ramps like in your picture. I always make sure after getting off they cannot get back onto the highway like that.

[germanogre]

Thanks for the help.

[Squee]

Could you take a closer look .. Depending on the intersection combination there could be traffic lights, and from the shadow id say there are trafficlights. Could be mistaken, but thats my guess.

Ya dont get traffic lights i believe if your intersections dont create paths to cross each other. so like connecting off ramps to one direction roads ( which include highways )

[germanogre]

If I wasn't going for such high-street and zone density, I wouldn't design it like this. Any other layout, though, takes up quite a bit more space, or results in more intersections being laid down just for the ramps. Even if this is patched, I agree that I'll just have to figure out another way.

[Squee]

Using some one way 2 laners in a roundabout doesnt necessarily have to take up to much space, and it would remove the stoplights. Ya could try that after making a save :) Because its just a 2 laner it would cause a bottleneck speed wise though. But could improve the situation on the short term.

[BlackAlpha]

Originally posted by germanogre:

If I wasn't going for such high-street and zone density, I wouldn't design it like this. Any other layout, though, takes up quite a bit more space, or results in more intersections being laid down just for the ramps. Even if this is patched, I agree that I'll just have to figure out another way.

Personally, I go for two lane two way road grids, then I branch off the ramps into the middle of the grids to spread out the traffic as much as possible. It's a much more efficient layout.
See here (there are no traffic jams anywhere):
http://i.imgur.com/tAO9OPE.jpg

[Harag]

Try putting a LARGE roundabout under the highway and put your off / on ramps onto that, then you will have no lights.