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Re: [sumo-user] Detect vehicles inside a junction
You can retrieve the ids of internal lanes by using sumolib in your traci script. Every connection object supports the call getViaLaneID().
Alternatively you can use traci.lane.getLinks() which includes the id of the target lane beyond the junction as  well as the internal lane in its result.

regards,
Jakob

2018-08-03 18:58 GMT+02:00 Mirko Barthauer <m.barthauer@xxxxxxxxxxx>:

Hello all,

what would be the advised way of detecting vehicles which are inside a junction? I want to forbid some vehicles to enter a junction while others haven't left it yet.

  • One option would be to place detectors on internal lanes, which works OK if you collect the lane ID by hand.
  • Another would be to watch vehicles on incoming and outgoing lanes thoroughly to compare inflow and outflow.
I would still prefer some solution which involves less computational effort. Something like a new TraCI function junction.getLastStepVehicleNumber(fromLaneID, toLaneID)...? I would help with the implementation when the rough concept is set.

Regards
Mirko

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