Re: [sumo-user] Beginner for SUMO

[Ei Ei Mon <eieimonimceits@xxxxxxxxx>]

Dear, 

Now, I can create the accident case by stopping the vehicle. Thank you very much. Another I would like to know is that I want to get the data by using traci in every minute not every second. Can I use the --step-length? Could you give me some suggestion? 

with best regards, 

On Tue, Sep 11, 2018 at 9:32 PM Ei Ei Mon <eieimonimceits@xxxxxxxxx> wrote:

Noted. I will try again. Thank you for your reply. 

On Tue, Sep 11, 2018 at 9:26 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Right-click the stopping vehicle in sumo-gui and select 'show current route'. This will cause stop duration info to be shown in the GUI. Is the duration value correct? Does it decrease as expected? What happens after the time is up?

2018-09-11 14:42 GMT+02:00 Ei Ei Mon <eieimonimceits@xxxxxxxxx>:

Dear, 

Vehicle always stop on the specified lane even duration is over. 

On Tue, Sep 11, 2018 at 7:28 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

What are the symptoms of "not working"?

2018-09-10 13:58 GMT+02:00 Ei Ei Mon <eieimonimceits@xxxxxxxxx>:

Dear, 

Thank you for your time. 

Now I use sumo 1.0.0 version. When I try to create accident case as the following:

if(step>=21600 and step<=22000):

      traci.vehicle.setStop('43.0',edgeID='L10189',laneIndex=1,pos=90,duration=600,flags=0,startPos=50);

duration is not still working. Something wrong in my code? 

with best regards, 

On Mon, Sep 10, 2018 at 6:09 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Answers below:

Now I would like to know about the difference between the outputs of edge-based measures and using lane area detectors. I want to get the information related with edge like density, occupancy , speed.  For this purpose, which of the following approaches is suitable? 

1) edge-based measures

2)using lane-area detectors 

The main difference is that edge based measures always count the whole edge whereas detectors only count a lane section.

Both approaches are possible but edge based measures require less aggregation if you need the data for the whole edge.

 

traci.vehicle.setStop('43.0',edgeID='L10189',laneIndex=1,pos=90,duration=600,flags=0,startPos=50);

but in this case, duration attribute is not working. 

In older versions of SUMO, setStop requires a duration in milliseconds. since 1.0.0 duration is in seconds.

 

In my case, I want queue length of each edge. For this case, now I compute the average value from queue length of each lane by using lane area detector. Is it possible by using this way? Or are there any other methods to get queue length directly from each edge? 

No, the queue length is only available for each lane. You have to aggregate the edge data yourself.

regards,

Jakob

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