> So setting the lane change mode to 1621 (default) and then setting
lcCooperative to 0.0 would mean that cooperative lane changes will still
take place
No. By setting lcCooperative=0, neither speed adjustment nor cooperative
changes will occur
> The functionality I need is to be able to toggle the behaviour of a
vehicle between being cooperative and non-cooperative (selfish).
You can either toggle laneChangeMode or adjust lcCooperative at runtime by
calling traci.vehicle.setParameter("laneChangeModel.lcCooperative",
str(value))
> Also, I would have assumed that lcCooperativeSpeed *should* effect speed
adjustments by the ego vehicle since the ego vehicle is trying to be
"cooperative"
The referenced bug is that, the ego may ignore advice that it gives to
itself (i.e. slow down to merge behind the leader) because it currently
does not distinguish who is helped by any given speed advice.
Am Do., 7. Apr. 2022 um 10:58 Uhr schrieb Hriday Sanghvi via sumo-user <
[email protected]>:
> Also, I would have assumed that lcCooperativeSpeed *should* effect speed
> adjustments by the ego vehicle since the ego vehicle is trying to be
> "cooperative" - so it would allow other vehicles to lane change onto its
> lane? Or is the lcCooperativeSpeed advice broadcast to neighbouring
> vehicles on a different lane?
>
> Thank you.
>
> Sincerely,
> Hriday
>
>
> On Thu, 7 Apr 2022 at 09:53, Hriday Sanghvi <[email protected]> wrote:
>
>> Thank you for the clarification.
>>
>> So setting the lane change mode to 1621 (default) and then setting
>> lcCooperative to 0.0 would mean that cooperative lane changes will still
>> take place, but without cooperative speed adjustments? On a different note,
>> is there a way to navigate past this bug? The functionality I need is to be
>> able to toggle the behaviour of a vehicle between being cooperative and
>> non-cooperative (selfish).
>>
>> Sincerely,
>> Hriday
>>
>>
>> On Wed, 6 Apr 2022 at 10:55, Jakob Erdmann <[email protected]> wrote:
>>
>>> The effect of setLaneChangeMode is strictly to prevent certain kinds of
>>> lane changes (setting it once per vehicle is enough, it doesn't revert by
>>> itself).
>>> In contrast, the lcCooperative parameter also affects cooperative speed
>>> adjustments because it provides the default value for lcCooperativeSpeed.
>>> This already explains some of the differences.
>>> Due to a bug, lcCooperativeSpeed also effects speed adjustments by the
>>> ego vehicle https://github.com/eclipse/sumo/issues/9473 and this
>>> probably accounts for the rest of the differene.
>>>
>>> regards,
>>> Jakob
>>>
>>> Am Di., 5. Apr. 2022 um 13:28 Uhr schrieb Hriday Sanghvi via sumo-user <
>>> [email protected]>:
>>>
>>>> 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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>>>>
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