highway off ramps blocking up

[Kato1144]

so i have an issue with car a reaching a off ramp only exit and only at the exit do they decided to get out of the lane, it's an issue I have been trying to solve but failing to do so, the AI seems too stunned to look ahead of were its going until it is too late and then it slams the breaks and cut off 2 to 3 lanes of traffic to move over to a lane that continues... last gen cities had a mod that allowed you to "draw" lane limitations and such, that really helped there and we could really uses something like that here or have the vehicle AI look ahead on the lane it is in and avoid exit only lanes if they do not want to exit...

https://imgur.com/a/ThI2oJp


also were the heck is the workshop page, would really appreciate a mod to fix this nonsense

[Kato1144]

just wanted to add here that this is not just an issue with exit only ramps but non exit only ramps are affected too as vehicles from other lanes will push in to the right lane at the exit to get over aswell...

[zaltocleotl[Banned@Paradox]]

Normal for this game. The moders will get us some useful tools sooner or later. Who knows when Paradox will get off the rock and give us a mod/asset site.

[Kato1144]

https://imgur.com/a/ezDrK2o

[zaltocleotl[Banned@Paradox]]

Yup, we all see that all the time.
Only help I can offer is to make the highway lose a lane after exits. Use a highway with one less lane so the exit is EXIT ONLY by demand and that can help with cars turning out of the exit lane some. But the stuff like your screenshot is just "put up with it' level of bad programming. If you leave the roads alone for long enough it might lessen quite a bit. Any recent changes can trick up traffic for hours in real life time.

[Kato1144]

ya i guess, the last game had an issue with all the traffic that wanted to exit being in the right lane all the time creating long line ups, now the traffic does not bunch up for the lane exit, not untill it reaches that exit and then its a panic to get over one way or the other, the decision time to get over for your exit happens around 200-400m out in most cases the game need to be using that logic not this oh ♥♥♥♥ im at the exit, time to cut off 4 lanes of traffic to get over.... (ya that does happen in real life and it usually leads to accidents )

[Kato1144]

well ♥♥♥♥ that helped, by "chocking it up" and forcing the right lane to be exit only the AI decision time moved up and they are now getting in to the correct lane further back

https://imgur.com/a/axz7miA

[Kato1144]

but its not optimal as the 2nd right lane and 3rd left lane are constantly switching out

[Kato1144]

just wanted to add that when i do this https://imgur.com/a/NtPHPWD you think it would help, those not going right would just keep going straight and the ones who need to turn would use the first or second right lane but no, they all want to get to the first right lane, there are guys in the far left lane stopping all the traffic to cross over to the far right lane....

this is my last post on this subject, im going to close this hot mess of a "game" and play something that works as intended and hope that in the new year I can find a solution to this mess.... might play cities skylines 1 but my mods are a mess ATM and it has its own traffic issues that stopped me from playing that one in the past...

maybe factorio is in the cards....

[Apples]

Originally posted by Kato1144:

but its not optimal as the 2nd right lane and 3rd left lane are constantly switching out

Yeah they switch lane way too late, the odd car would be realistic, but half of them end up doing it... and the thing is they are given the right of way as they wedge themselves in and stop everything...

It would be better if they waited for the traffic in the correct lane to clear first.

[pletus]

I have over half a million population, so I've dealt with this issue a lot and it doesn't require mods to fix. There are a few ways to get traffic to flow better without it.

When cars start clogging off-ramps it can be a number of things:
1. Bad road node - a bad road node is either a contorted node that has warped from messing with the roads too much, or it's just super short. This can happen when you've been upgrading and downgrading roads, adding roads to them or have wild changes in elevation on the same road.

2. More exits needed - Sometimes an exit ramp leads to two completely differing directions, or two different types of traffic going in two different directions after the ramp are competing with each other. This can be fixed by creating another ramp further back from the one in your screenshot, or having a left-exit ramp instead.

3. More space needed - Related to 2. You have an on-ramp too close to the off-ramp, and traffic is competing to get past each other.

4. The ramp isn't wide enough - pretty self explanatory. There's too much traffic for the ramp to handle.

Most of the time I find this issue in areas where I'm not offering enough opportunities for traffic to choose where it wants to go. Maybe you need more perpendicular roads?

[Apples]

Originally posted by pletus:

1. Bad road node - a bad road node is either a contorted node that has warped from messing with the roads too much, or it's just super short. This can happen when you've been upgrading and downgrading roads, adding roads to them or have wild changes in elevation on the same road.

Can happen when you connect a pedestrian path to a road which creates a crossing and a much smaller road section, removing it won't fix it, what i have found is;

1: If it's a straight road, you can easily just go over it with another road as though you were replacing it with another type, that should fix it.

2: If it's curved, i found an alternate solution and a better way of doing is to upgrade the road, but hold left click and move across the full length from intersection to intersection, it re-adjusts the nodes.

I imagine the same idea can be applied to the above.

[Stormfire962]

Originally posted by Kato1144:

so i have an issue with car a reaching a off ramp only exit and only at the exit do they decided to get out of the lane, it's an issue I have been trying to solve but failing to do so, the AI seems too stunned to look ahead of were its going until it is too late and then it slams the breaks and cut off 2 to 3 lanes of traffic to move over to a lane that continues... last gen cities had a mod that allowed you to "draw" lane limitations and such, that really helped there and we could really uses something like that here or have the vehicle AI look ahead on the lane it is in and avoid exit only lanes if they do not want to exit...

https://imgur.com/a/ThI2oJp


also were the heck is the workshop page, would really appreciate a mod to fix this nonsense

This problem is occurring because your lane mathematics is wrong.

You have a 5 lane highway splitting off with a 2 lane ramp and the rest of the traffic continuing on a 4 lane highway which part that is incorrect. It should only be a 3 highway and not 4, since 2 minus 5 equal 3 not 4.

Make that correction and your problem will be fixed.

[Kato1144]

ok i think it was a node issue, rebuilt my bridge, moved some stuff around and now it is working much much better https://imgur.com/a/cPJU2u4

[Kato1144]

just to update, i had some other trouble spots, but removing the highway (and there was a short a piece right before the off ramp aswell), and rebuilding the highway/off ramp the vehicles behaved better

[pletus]

Originally posted by Kato1144:

just to update, i had some other trouble spots, but removing the highway (and there was a short a piece right before the off ramp aswell), and rebuilding the highway/off ramp the vehicles behaved better

Awesome! Happy to help :)