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Re: [sumo-user] fixing bugs in a jammed simulation
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Hi Soheil,
you have set a quite high value for lcStrategic, meaning vehicles will care much about reaching the target turning lane early. Depending on which routes your vehicles take and how close junctions are next to each other, artefacts like in your screenshots may happen because maybe all vehicles turn right/left at some point... Then there may be other isues like how connections are modeled which is impossible to tell without the scenario.
Regarding the first question about od2trips, I don't get the question. If you have TAZ containing multiple edges each with a probability > 0 to be chosen, then trips will not start / end necessarily on the same edge.
Best regards
Mirko
-----Original-Nachricht-----
Betreff: [sumo-user] fixing bugs in a jammed simulation
Datum: 2023-09-23T02:04:12+0200
Von: "Soheil Keshavarz via sumo-user" <sumo-user@xxxxxxxxxxx>
An: "sumo-user@xxxxxxxxxxx" <sumo-user@xxxxxxxxxxx>
Hello all,
I was hoping to get some help from you regarding different settings in my simulation of downtown Seattle, in which some links get highly jammed and many vehicles teleport.
1- My demand file has trips in the format below:
<trip id="1" depart="18008.0" fromTaz="5000" toTaz="5003" type="passenger" departLane="free" departSpeed="max"/>
Since od2trip command assigns departing and arriving links to each id, I did not use it. However, like the 'different-source-sink' option in od2trip, I would like to make sure that trips with same origin and destination TAZs are not only in one link.
2- There are some unusual behaviors in my simulation. I would appreciate any advise to correct them.
for example, a) in the bottom link, vehicles are not going forward in the middle lane, and vehicles that want to turn left, ONLY turn to most left lane of the adjacent link.
and b) vehicles in the south use a hight congested road with lower priority to reach the north, instead of using the link with higher priority and more lanes. Shouldn't higher priority mean a higher probability of being used in routing?
By the way, below are some hyperparameters of my sumocfg file and defintion of passenger vehicles in my simulation:
<vType id="passenger" vClass="passenger" accel="3.2" color="yellow" decel="3.5" length="4" maxSpeed="200" lcStrategic="2000" lcSpeedGain="5" lcCooperative="1" lcSpeedGainLookahead="5" minGap="1.5" cc1="0.9" cc2="4" cc3="-8" cc4="-0.1" cc5="0.1" cc6="11.44" cc7="0.25" cc8="3.5" cc9="1.5"/>
Thank you in advance for your comments.
--
SOHEIL KESHAVARZ (he/him)
Graduate Student | Research Assistant at iUTS Lab
