Re: [sumo-user] Reading vehicle speed using traci

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

Hello,

1) I would not expect this to happen. Which car-following model are you using? Can you provide a small sample simulation that shows the issue?

2) I would expect that the sum of the results of calling getEmergencyStoppingVehiclesNumber() in every simulation step equals the log output 'Emergency Stops:'. If that's not the case please provide a counterexample. Note, that emergency stops are different from emergency braking (the former happens if a vehicle drives too fast and reaches the end of it's lane, the latter may happen anywhere and is mostly due to vehicle interactions).

3) every simulation step that a vehicle spends with speed below 0.1m/s  without being in a stopped state is counted.

regards,

Jakob

Am Mo., 12. Aug. 2019 um 17:17 Uhr schrieb mnawar <Mahmoud.Nawar@xxxxxxxxxxxxxx>:

Hello all,
First I would like thank sumo development team, I am using sumo for more
than two years and see how fast it evolves.

I have a few questions:
1- I was trying to get the normalized vehicle speed using traci
‘’traci.getVehicleSpeed/ traci.getAllowedSpeed’’
the result sometimes is greater than one, is this ok?, as i know that the
allowed speed includes the speed factor , so why it this would happen?

2- how can one get the number of vehicles that started emergency stop in the
last steps as i tried many ways but the result wasn’t consisted with the
reported output at the end of the simulation.

Finally how the waiting time value in the aggregated output is calculated?


Best Regards



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