Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [sumo-user] Turning cars block the intersections
I had this problem with a very congested intersection with a long, multi-lane approach. In reality, drivers try to merge into the proper lanes far ahead of the intersection, but SUMO lets drivers try to merge at the last minute which then results in cars being in the wrong lanes. The fix was to force all vehicles towards the center lanes using zipper junctions, which then makes it easier for vehicles to leave the center lanes for the proper turn lanes.

Albert Jeans

On Thu, Nov 21, 2019 at 5:56 AM Hao Zhou <zhouhaoseu@xxxxxxxxxx> wrote:
I had similar question before. Later I used traci to reroute vehicles at intersections to pick the most ‘idle’ next lane. Also I found a random routing algorithm can fix the block. I mean the route is updated every time step. 

Best,
Hao

On Nov 21, 2019, at 07:45, Sasan Amini <sasan.amini@xxxxxx> wrote:

Is there a way to make the drivers a bit smarter? For example, in VISSIM one can set the “look ahead distance” to choose the best driving lane well in advance. IS there such a parameter in SUMO driving behaviour models?

 

 

From: sumo-user-bounces@xxxxxxxxxxx [mailto:sumo-user-bounces@xxxxxxxxxxx] On Behalf Of Jakob Erdmann
Sent: Thursday, 21 November 2019 12:53
To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Subject: Re: [sumo-user] Turning cars block the intersections

 

The most likely cause for this comes from the incoming connections of that edge (and possibly the ones before that). If the connections mostly target the right lanes then left-turning vehicles that enter this edge will first have to change lanes which becomes difficult in dense traffic.

 

Am Do., 21. Nov. 2019 um 11:40 Uhr schrieb Sasan Amini <sasan.amini@xxxxxx>:

Dear all,

 

I have a relatively large network in which I often face a problem at intersections. As you can see in the attached screenshot, left-turning cars stop in other lanes where they cannot turn left and stand still blocking the way for the through stream. My questions is why would they even select an unsuitable lane from the upstream road connection? How can I avoid this? There are no cars generated in this link and all vehicles come from other “source” links and go to some other “sink” links. I have no internal links and it only happen when the traffic volume is big, for small demands this doesn’t happen. Is it related to lane changing or rerouting decisions?

 

Thanks for the help.

Sasan

 

_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://www.eclipse.org/mailman/listinfo/sumo-user

_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://www.eclipse.org/mailman/listinfo/sumo-user

Back to the top