Hello,
I recently found out that the only way to simulate a blockage in
a temporary part of the lane, (maybe due to construction activities) is by
stopping a 'ghost' vehicle and setting its length to the intended area of
effect. Source:
https://gitanswer.com/has-sumo-a-method-to-block-part-of-the-lane-1007148310
. Please correct me if that is not the case.
How would I go about allowing the other vehicles to lane change around this
'ghost' vehicle to reach the end of a single edge with 3 lanes? Edge file:
<edges>
<edge id="1f2" from="1" to="2" speed="30" numLanes="3"
> spreadType="center"/>
</edges>
>
Route file:
<routes>
<vType id="veh" length="5" maxSpeed="30" lcStrategic="0" lcCooperative="0"
> lcSpeedGain="0" lcKeepRight="0" lcOvertakeRight="0" lcOpposite="0"
> lcSpeedGainLookahead="0" lcCooperativeRoundabout="0" lcSublane="0"
> lcPushy="0" /><route id="r0" color="1,1,0" edges="1f2" />
</routes>
In TraCI (Python):
step = 0
> traci.vehicle.add(vehID='ghost', routeID='', typeID='veh', depart=0,
> departLane=0, departSpeed='random')
> traci.vehicle.setColor(vehID='ghost',color=(0,255,0))
>
> while step < 1000:
> traci.simulationStep()
> if step % 10 == 0:
> traci.vehicle.add(vehID='agent_{}'.format(step), routeID='r0',
> typeID='veh', depart='now', departLane='random', departSpeed='random',
> arrivalLane='random')
> # traci.vehicle.moveToXY(vehID='ghost', edgeID='1f2', lane=0, x=68.0,
> y=-3.3, angle=90, keepRoute=1)
> traci.vehicle.setStop(vehID='ghost', edgeID='1f2', pos=1, laneIndex=0,
> duration=100, flags=0, startPos=0, until=120)
> step+=1
> traci.close()
The moveToXY seems to stop the 'ghost' vehicle at the specified coordinates
indefinitely (until simulation ends) but the setStop command doesn't seem
to make any modifications. So I was wondering if a combination of these
would make it ideal for my case.
Why does the vehicle completely stop after using the moveToXY command
indefinitely? Could you clarify the parameters used for the setStop
command, specifically *pos, duration, flags, startPos and until*? I'm
assuming until is from the start time of the simulation (at 0). So if I set
until to 300, the vehicle should stay in the stopped state till 300
simulation time. But then I am confused because duration would mean time in
seconds for the stopped state?
Also, I have already tried using TraCI's lane.setDisallowed() method, but
it blocks the entire lane and not just the specified part of it.
Thank you for any assistance in advance.
Sincerely,
Hriday.
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