Hello, Thank you for your response. A detail that might be important is that I set my lane changing mode to 512 (for collision avoidance and safety-gap enforcement only).
The flow is defined in my routes file as: > *<flow id="f" begin="0" number="100" vehsPerHour="10000" type="veh" > route="r0" departLane="random" departSpeed="random" arrivalLane="random" />* where the route is just a traversal of 1 edge from end to end (1000m) and the vehicle type is defined as: > *<vType id="veh" length="5" color="0,1,0" />* I would have imagined that the random starting speeds and lanes would make it such that vehicles were forced to cooperate and lane change accordingly? Do I have to mess with the speed mode too? Thank you. Sincerely, Hriday On Wed, 16 Mar 2022 at 09:10, Jakob Erdmann <[email protected]> wrote: > The scenario you described is heavily influenced by the departLane and > departSpeed parameters. > With default parameters you will only get insertions on the rightmost lane > with moderate density (~1500 veh/hr) and no cooperative lane changing will > be needed. > If you set departLane="free" and departSpeed="avg" you should see high > flow and lcCooperative will be impactful. > Another good scenario for observing the effect of lcCooperative are > on-ramps. here vehicles cannot change lane far in advance and must instead > rely on cooperative behavior to change left from their (short) acceleration > lane. > > regards, > Jakob > > Am Di., 15. März 2022 um 18:10 Uhr schrieb Hriday Sanghvi via sumo-user < > [email protected]>: > >> Hello again, >> >> Thank you for the response. I understand that these 3 parameters are the >> main factors that affect cooperative changes. >> >> In a 2-lane scenario and a 3-lane scenario (road length = 1000m) with the >> rightmost lane blocked by a stopped vehicle of length 300m at position >> 750m, there doesn't seem to be a big difference when setting >> lcCooperative=1.0 vs. lcCooperative=0.0 for 100 vehicles to pass through at >> a rate of 10000 vehicles/hr -> only a difference of 4-8 simulation time >> steps (seconds in my case). Wondering in what scenario this difference in >> parameters would be most visible - if any clue? >> >> Thank you. >> >> Sincerely, >> Hriday >> >> >> On Mon, 14 Mar 2022 at 14:08, Jakob Erdmann <[email protected]> >> wrote: >> >>> Hello, >>> cooperative behavior is actually guided by three parameters that can be >>> controlled separately: >>> - lcCooperative: whether to perform a cooperative lane change if >>> decreases ego speed, See Line 1375 >>> - lcCooperativeSpeed (defaults to lcCooperative): whether to adapt the >>> ego speed to help other vehicles with lane changing. This is the code you >>> already found >>> - lcCooperativeRoundabout (defaults to lcCooperative): whether to use >>> the inside lane on a multi-lane roundabout. See Line 1230 >>> >>> lcCooperativeSpeed (myCooperativeSpeed) actually controls speed >>> adaptions for the vehicle that wants to merge as well as the vehicle that >>> wants to help (there is a known problem with this: >>> https://github.com/eclipse/sumo/issues/9473) >>> >>> The 'getSlowest' code is for preventing overtaking on the right where >>> this is forbidden. This is unrelated to cooperative behavior. >>> To understand the speed adaptations that are advised >>> (myLCAccelerationAdvices), activate the 'DEBUG_INFORM' flag in line 95 and >>> then select vehicles in the simulation. (debug console output requires the >>> debug build when on windows). >>> >>> regards, >>> Jakob >>> >>> >>> Am So., 13. März 2022 um 12:14 Uhr schrieb Hriday Sanghvi via sumo-user < >>> [email protected]>: >>> >>>> Hello, >>>> >>>> I am trying to understand the cooperative actions taken by vehicles in >>>> SL2015 LC model. I am going through the C++ code and the start of this >>>> line: >>>> https://github.com/eclipse/sumo/blob/main/src/microsim/lcmodels/MSLCM_SL2015.cpp#L366 >>>> seems to have the crux of the cooperative actions taken. >>>> >>>> >>>> https://github.com/eclipse/sumo/blob/21d11b1a26c4b781929b64416084e02a5f974cbe/src/microsim/lcmodels/MSLCM_SL2015.cpp#L370 >>>> seems to be the selection of speed for the vehicle that is cooperating to >>>> let another vehicle onto its lane? OR is the selection of speed for the >>>> vehicle that is changing lane into another one? - Not sure how *wanted* >>>> (variable) >>>> is calculated. >>>> >>>> >>>> https://github.com/eclipse/sumo/blob/21d11b1a26c4b781929b64416084e02a5f974cbe/src/microsim/lcmodels/MSLCM_SL2015.cpp#L2703 >>>> tells me that the speed above is also in some way related to checking the >>>> speed of the slowest leaders on the neighbouring lanes? >>>> >>>> Please advise on where I could read more to understand in-depth - both >>>> the lane changing and the speed change that is required by the cooperative >>>> action? (For example, if I set the lcCooperative parameter to 1.0 (max)) >>>> >>>> Thank you. >>>> >>>> Sincerely, >>>> Hriday >>>> _______________________________________________ >>>> sumo-user mailing list >>>> [email protected] >>>> To unsubscribe from this list, visit >>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>> >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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