Re: [sumo-user] Road profile definition in Sumo

[Harald Schaefer]

Hi Sourabh,

the road gradient can by modelled with the elevation. See 
https://sumo.dlr.de/docs/Networks/Elevation.html 
 for details.


Greetings, Harald

Am 29.12.20 um 09:38 schrieb sourabh chinchanikar:

Hello,

I have a query regarding how to define lane profiles(for. e.g. different
road conditions and road gradient in Sumo)? I am using MATLAB to simulate
the traffic in SUMO.


Thank you,

Sourabh



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Re: [sumo-user] Evacuation simulation with SUMO

[Maria.Armellini]

Hi Osman,

you can find a lot of information in the wiki, see 
https://sumo.dlr.de/docs/index.html.
Here you can find some general information about SUMO and its applications 
https://sumo.dlr.de/docs/SUMO_at_a_Glance.html and here 
https://sumo.dlr.de/docs/FAQ.html#general the FAQ.
Maybe you can start with some tutorials: 
https://sumo.dlr.de/docs/Tutorials.html.
Finally, you can reroute vehicles in SUMO using a rerouter, see 
https://sumo.dlr.de/docs/Simulation/Rerouter.html.

Regards,
Giuliana

Von: sumo-user-boun...@eclipse.org  Im Auftrag 
von Osman Khalid
Gesendet: Mittwoch, 30. Dezember 2020 19:49
An: sumo-user@eclipse.org
Betreff: [sumo-user] Evacuation simulation with SUMO

Respected members

I want to model a population evacuation from a source towards a destination 
going through road network. The conditions of roads may vary during simulation, 
as usually happen in disaster scenarios. Moreover, the congestion on roads will 
also vary. Also I want to reroute the vehicles depending on the road conditions.

I have no experience of sumo, I have just downloaded it and not getting idea 
from where to begin. Also what simulation module fits best on my scenario, 
mesoscopic, microscopic, and macroscopic, depending what sumo provides.

Any sort of guidance in this regard will be highly appreciated.

Regards
Osman
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Re: [sumo-user] Two Problems: Traffic only travels on one lane of a two lane road and Restricted Bus Lane produces error with Bus stop

[Maria.Armellini]

Hi John,

You can then try connecting the 1-edge lane only to the right lane of the 
2-lane edge (see image). This will increase the queue in the right lanes, but 
I´m really not sure that this is the best solution the modeling perspective. 
Keep the value of lcStrategy under 1 as well, which will reduce the forecast 
distance that affects the choice of the strategic lane.

[cid:image001.png@01D6DEE6.5F9234F0]

Regards,
Giuliana

Von: sumo-user-boun...@eclipse.org  Im Auftrag 
von John
Gesendet: Dienstag, 29. Dezember 2020 17:09
An: Sumo project User discussions 
Betreff: Re: [sumo-user] Two Problems: Traffic only travels on one lane of a 
two lane road and Restricted Bus Lane produces error with Bus stop

Hi Guiliana,
The vClass addition fixed the bus problem, thanks!
I am still having trouble with simulating the two lanes of traffic going to 
three at the crossway. I have checked all the junctions and there are two paths 
all the way through ending on the three lane crossway, which has a left turn 
only lane as the third lane with two thru lanes.
Most of the traffic does turn left onto the crossway but there should be two 
lanes queued up, not one.
I have changed a few lane changing model parameters such as lcKeepRight="0.5”, 
lcStrategic="0.3” and lcOverTakeRight="1", but I still cannot get the 
simulation traffic to occupy both lanes. Any further thoughts how I might 
accomplish this?
Regards,
John

Sent from my iPad


On Dec 29, 2020, at 7:10 AM, 
maria.armell...@dlr.de wrote:

Hi John,

Maybe I can help you.
Regarding the problem with the 2-lane street: have you checked the connections? 
Please try changing the connections of the junction before the crossway (see 
image). It looks like that the majority of the vehicles want to turn left on 
the crossway. If the vehicles want to turn left, they will only use the left 
lane, because if they stay on the right one, they will not be able to access to 
the left lanes of the last 3-lanes edge.


As for the error message, have you checked that the vClass of your vehicle 
“BUS65I1” is “bus”?

Regards,
Giuliana

Von: sumo-user-boun...@eclipse.org 
mailto:sumo-user-boun...@eclipse.org>> Im 
Auftrag von John Doggett
Gesendet: Samstag, 26. Dezember 2020 19:48
An: sumo-user@eclipse.org
Betreff: [sumo-user] Two Problems: Traffic only travels on one lane of a two 
lane road and Restricted Bus Lane produces error with Bus stop


Jakob,

I am modeling a proposed restricted buslane that cuts across three busy 
intersections in our town. I have the model working but have two problems: a 
two lane edge defined has only one lane being used when the simulation runs; 
and an error message occurs when a bus-top is place on a restricted bus lane.

The LH image below shows the traffic on the 2-lane Washington Street is only 
using one lane of the roadway after the two single lane feeder roads. Nearly 
all the traffic turns east at the major intersection with the divided highway. 
I cannot get the model to reflect the real world where both lanes are fully 
occupied at this hour.




The model without the bus lane runs the buses fine and they stop at the bus 
stop on the edge as marked. Then, I created a new network with the edge/lane 
rte9e6_0 defined as being a restricted bus lane with bus stop, but get the 
following error message:


Any advice to fix these two problems?

Regards,

John





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[sumo-user] Evacuation simulation with SUMO

[Osman Khalid]

Respected members

I want to model a population evacuation from a source towards a destination
going through road network. The conditions of roads may vary during
simulation, as usually happen in disaster scenarios. Moreover, the
congestion on roads will also vary. Also I want to reroute the vehicles
depending on the road conditions.

I have no experience of sumo, I have just downloaded it and not getting
idea from where to begin. Also what simulation module fits best on my
scenario, mesoscopic, microscopic, and macroscopic, depending what sumo
provides.

Any sort of guidance in this regard will be highly appreciated.

Regards
Osman
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Re: [sumo-user] warm-up period

[Mirko Barthauer]

As far as I know, in VISSIM you just add some simulation time and 
traffic demand during warm-up, too. There is no real difference compared 
to SUMO. You can specify the simulation time with the time-related 
parameters in SUMO: https://sumo.dlr.de/docs/sumo.html#time 



The only thing you have to bother with is simulation output: SUMO 
detectors collect data from the first simulation step. In order to 
separate data from warm-up period exactly, be sure to choose an 
aggregation frequency as a factor of warm-up period (see e.g. induction 
loop detectors 
 
freq attribute): freq*n = warm-up period; where n is an integer.


Mirko

Am 30.12.2020 um 12:03 schrieb Shah Sultan:

Thank you Giuliana for your reply.

Do I need to set the warm-up period through Traci? or is there any other way
to set it once for my whole simulation run? Maybe you find this question
silly but previously I was using VISSIM in which I just needed to change
some attribute for that from the VISSIM interface.



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Re: [sumo-user] warm-up period

[Shah Sultan]

Thank you Giuliana for your reply.

Do I need to set the warm-up period through Traci? or is there any other way
to set it once for my whole simulation run? Maybe you find this question
silly but previously I was using VISSIM in which I just needed to change
some attribute for that from the VISSIM interface.



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