Hello,

Maintaining the same scenario settings (3 lanes, 2000 m road, blockage on
each lane, SL2015 LCM), I have run an entire simulation for 100 vehicles to
complete their journey.

I find that two ways to be able to tell vehicles to either "be cooperative"
(coop) or "don't be cooperative" (no-coop) are either by:

changing the lane change mode from 1621 (default, with coop) to 1617
(no-coop) using *traci.vehicle.setLaneChangeMode(vehID=vh, lcm=1617) *at
every step for each vehicle in the simulation

OR by

changing the lcCooperative parameter from 1.0 (default, with coop) to 0.0
(no-coop) using *traci.vehicle.setParameter(objID=vh,
param="laneChangeModel.lcCooperative", value=str(0.0)) *at every step for
each vehicle in the simulation; while letting the default lane change mode
of 1621 be.

But from the result of the time taken to complete simulation, they don't
seem to be equivalent:

no-coop by setting lcCooperative to 0.0 - 373 s
no-coop by setting LCM to 1617 - 377 s

coop by setting lcCooperative to 1.0 - 365 s
coop by setting LCM to 1621 - 365 s

Could you please point me to the resource that I am missing to understand
this difference? I am using the latest version of SUMO (main branch) built
from the source.

Thank you.

Sincerely,
Hriday
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