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Re: [sumo-dev] [UNTRUSTED] Re: Most efficient way to iterate all traffic lights and view vehicle types incoming?

So, I have the following code. However, because sometimes the light color is changed too abruptly vehicles will have to emergency stop and occasionally there will be teleporting. What would you recommend as the best way to gracefully prefer a certain lane? 



for id in trafficLightIDs:
lanes = list(set(traci.trafficlights.getControlledLanes(id)))
fuelConsumption = []
for lane in lanes:
fuelConsumption.append(traci.lane.getFuelConsumption(lane))
print(traci.lane.getLength(lane))
if not all(v == 0 for v in fuelConsumption):
print("here")
max_val = max(fuelConsumption)
index_max = fuelConsumption.index(max_val)
if index_max == 0 or index_max == 2:
if traci.trafficlights.getPhase(id) != 0:
traci.trafficlights.setPhase(id,0)
else:
if traci.trafficlights.getPhase(id) != 2:
traci.trafficlights.setPhase(id,2)


Sean Oesch
Security Researcher & Software Architect
CISR Group at Oak Ridge National Laboratory
Leader Blockchain Initiative
From: sumo-dev-bounces@xxxxxxxxxxx <sumo-dev-bounces@xxxxxxxxxxx> on behalf of Oesch, T. Sean <oeschts@xxxxxxxx>
Sent: Tuesday, October 16, 2018 9:17 AM
To: Jakob Erdmann
Cc: sumo developer discussions
Subject: [UNTRUSTED] Re: [sumo-dev] Most efficient way to iterate all traffic lights and view vehicle types incoming?
 

So, let's say I have the following values for fuel consumption in each lane. How would I set the traffic light to allow lane B0A0_0 to go? I am unsure about the correlation between the lane values and the traffic signal. 


'A1A0_0': 0.0, 'B0A0_0': 2624.722222222222, 'bottom0A0_0': 0.0, 'left0A0_0': 0.0​


Thanks! 


Sean Oesch
Security Researcher & Software Architect
CISR Group at Oak Ridge National Laboratory
Leader Blockchain Initiative
From: Jakob Erdmann <namdre.sumo@xxxxxxxxx>
Sent: Monday, October 15, 2018 10:30 AM
To: Oesch, T. Sean
Cc: sumo developer discussions
Subject: Re: [sumo-dev] Most efficient way to iterate all traffic lights and view vehicle types incoming?
 
If your switching algorithm does not care about the direction from which the vehicles are coming, then yes.

Am Mo., 15. Okt. 2018 um 15:21 Uhr schrieb Oesch, T. Sean <oeschts@xxxxxxxx>:

What I would like to do is change the phase of the light based on the type of vehicles in each lane. Could I do something like the following pseudocode? Or would I need to use getControlledLinks to do this fluidly?


lanes = trafficlight.getControlledLanes(id)

for incomingLane in lanes:

     carTypes[incomingLane] = incomingLane.getVehicles.getTypeList()

setLightPhase(carTypes)​


Sean Oesch
Security Researcher & Software Architect
CISR Group at Oak Ridge National Laboratory
Leader Blockchain Initiative
From: Jakob Erdmann <namdre.sumo@xxxxxxxxx>
Sent: Monday, October 15, 2018 2:36 AM
To: Oesch, T. Sean; sumo developer discussions
Subject: re: [sumo-dev] Most efficient way to iterate all traffic lights and view vehicle types incoming?
 
Every traffic light supports retrieval of incoming lanes via method traffic. trafficlight.getControlledLanes (a list of ids)
You can use this to iterate over all vehicles on these lanes and figure out their types. If you need to correlated lanes with green phasesyou can use getControlledLinks but you first need to get a good understanding of how traffic lights are modelled in sumo to make use of the returned values

regards,
Jakob

 

Hey guys,

 

I figured out how to iterate all traffic lights using TraCI - pretty straight forward. But what is the most efficient way to view vehicle types on each incoming lane at each traffic light??? Putting induction loops on the incoming lanes of every light seems inefficient and I do not see a way to correlate the induction loops with the light for easy lookup. 

 

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