Re: [sumo-user] How to implement a two-stage left turn in SUMO?

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

In principle, the methodology for bicycles described at https://sumo.dlr.de/docs/Simulation/Bicycles.html#indirect_left_turn can be applied to mixed traffic with scooters by extending the bicycle lane permissions to include vehicle class 'moped' and defining your scooters with this vClass. Since straight-going scooters may be allowed on all lanes, you can also modify the permissions of the vehicular left-turn connection so it disallows moped (thereby forcing them to use the indirect turn).

an example scenario for this setup can be obtained via https://sumo.dlr.de/extractTest.php?path=sumo/tests/sumo/junction_model/indirect_left_turn/internal_junction_controlled_moped

However, due to a bug in regard to connection permissions (https://github.com/eclipse/sumo/issues/8499), this isn't working in the latest release (1.9.0) but only working in the latest development version.

Since the bugfix is from today, you need to wait until tomorrow to download the updated files at https://sumo.dlr.de/docs/Downloads.php#sumo_-_latest_development_version

regards,

Jakob

Am Fr., 16. Apr. 2021 um 04:32 Uhr schrieb Chien-Hao Huang <will.brown510202@xxxxxxxxx>:

Hi Giuliana, 

Sorry for my late reply. I've tried your suggestion and it still didn't work.

I've read a paper which is attached to this mail, and on page 190, I would like to realize the two-stage left turn of scooters in SUMO by the same application as picture 4.5 showed in Table 1. However, it seems that this application cannot apply to mixed traffic flow. My advisor suggested I take a look at the source code of this kind of application to figure out the operation logic. If this idea is on the right way, maybe I can rewrite it in an effort to apply it to the traffic environment in Taiwan. 

Does anyone know how to check the source code of the application of bicycles' indirect left turn? Or does anyone know how to realize scooters' two-stage left turn in mixed traffic flow in SUMO? 

Thanks and regards, 

CH Huang

<Maria.Armellini@xxxxxx> 於 2021年4月1日 週四 上午7:05寫道：

Hi,

 

the same applies to bicycles. Maybe you can model your left-turns in the same way. See: https://sumo.dlr.de/docs/Simulation/Bicycles.html#indirect_left_turn

 

Regards,

Giuliana

 

Von: sumo-user <sumo-user-bounces@xxxxxxxxxxx> Im Auftrag von Chien-Hao Huang
Gesendet: Mittwoch, 31. März 2021 17:46
An: sumo-user@xxxxxxxxxxx
Betreff: [sumo-user] How to implement a two-stage left turn in SUMO?

 

Hello, 

 

I'm trying to implement a two-stage left turn in an intersection in SUMO. The two-stage left turn is a policy specialized for scooters in Taiwan. In some multi-lane intersections, a scooter rider who conducts a left turn directly is prohibited. Instead, scooter riders would conduct a two-stage left turn. They would move their scooter to the right side while approaching the intersection to ride into the waiting box safely. You can see the picture attached in this mail to figure out this concept clearly. 

 

Could anyone know how to deal with this issue?

 

Thanks and regards, 

CH Huang

 

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