Re: [sumo-user] Make vehicles use 2 lanes

[Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx>]

Thanks Jakob, setting the next junction to 'zipper' solved this right away!

As for pedestrians, given the network in the screenshot, could I create a single edge for pedestrians where they can walk in both directions? When I create a crossing, NETEDIT says that the crossing "has no target". I am somewhat unsure how to determine what edges the crossing should connect to so I can then use dynamic assignment via od2trips. The information on creating crossings with NETEDIT on the wiki does not mention how to edit their position, or how to connect them to edges.

Using the option --persontrips gets rid of the old warning, but now SUMO (0.32.0 release version) says "Warning: The attribute departPos is no longer supported for walks, please use the person attribute, the arrivalPos of the previous step or explicit stops.". Also, the pedestrians no longer just cross the junctions in my network, but seem to sometimes skip junctions, and sometimes start walking all over the network, causing a lot of collisions and delays. They also no longer wait for red trafficlights. Probably, the way I currently built my network does not play nicely with pedestrian trips.

Greets, Menno

On 27-6-2018 10:55, Jakob Erdmann wrote:

Hello,

1) I suspect to two-lane edge that leaves the intersection towards the west narrows to 1 lane and vehicles already try to be on the correct continuation lane. To avoid this behavior, set the node type to 'zipper' where the two lanse merge.

You can diagnose strategic lane choice by right clicking a vehicle and selecting 'show best lanes'.

2) If you model pedestrians as vehicles then they will have an improper dynamics model (e.g. they will not use the whole width of the sidewalk for walking in both directions).

You  can use od2trips with the option --persontrips to generate persons instead.

If you model pedestrian crossings as crossing objects you can also control them using their index link number. In the latest development version it is also possible to control both sides of the crossing with different indices (and of course you can chose indices freely) so you have the same power as with the current modeling approach.

Regarding placement, you can configure crossing shapes freely via xml input and netedit.

regards,

Jakob

2018-06-27 10:44 GMT+02:00 Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx>:

Hello,

in the network in the screenshot below, there are two lanes coming from the south going left. This intersection is controlled by a traffic light (via TraCI).

During the simulation, vehicles do not use the leftmost lane. I have seen this behaviour in other simulations I have done. Is there a way to stimulate vehicles to use both lanes? The lane on the right (that is the middle lane here) would normally probably be used more intensively, but vehicles should also use the leftmost lane.

Any help appreciated!

On a sidenote: I am modelling the pedestrians using dynamic assignment via od2trips. I have them walk over normal edges (which means they will neatly queue at triffic lights, which is odd, but OK for my purposes). SUMO complains about this, I get a warning for each pedestrian that enter the network: "Warning: Vehicle type '7' with vClass=pedestrian should only be used for persons and not for vehicle 'ped78'.".
Is this the wrong way to have pedestrians in the simulation? I do this cause it allows me to place pedestrian crossings precisely where I want, and control them via TraCI using their index link number.

Greets, Menno

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