The easiest solution is to track the state of each link with your own code each second and aggregated the red times. While the type 'actuated' controller actually tracks red time per link internally, there is no such feature for NEMA and there is no TraCI API to retrieve the values anyway.
Am Sa., 6. Mai 2023 um 15:29 Uhr schrieb Tianjia Yang < tianjiayang...@gmail.com>: > Thanks for the information. And sorry about my unclear expression. > I just want to monitor the elapsed red time (the time period between when > the red light started and my request time) in the given links at each > simulation timestep. The elapsed red time in each link will act as the > penalty in my optimization objective function. I am trying to develop an > optimization algorithm that can control the signal light at each simulation > timestep via Traci. There is no prediction involved. > So is there a workaround for getting the elapsed red time in each > simulation timestep? > > On Sat, May 6, 2023 at 3:43 AM Jakob Erdmann <namdre.s...@gmail.com> > wrote: > >> Since the NEMA controller is traffic actuated you cannot easily predict >> the green/red durations in advance. The only way to obtain the upper/lower >> boundaries is to examine the whole program and add up the time for phases >> that are potentially consecutive where the link of interest maintains the >> same state. On the other hand, if you are content with analyzing the >> durations at the end of the simulation, you can get the them from >> https://sumo.dlr.de/docs/Simulation/Output/Traffic_Lights.html#tls_programs >> or >> https://sumo.dlr.de/docs/Simulation/Output/Traffic_Lights.html#tls_switches >> >> Am Fr., 5. Mai 2023 um 22:41 Uhr schrieb Tianjia Yang < >> tianjiayang...@gmail.com>: >> >>> Thanks for the quick reply. >>> I would like to obtain the green or red duration of each link, not the >>> duration of the phases. >>> I use the NEMA phase program. Even though the phase is changing, the >>> signal light in some of the links (turning directions) is kept unchanged. >>> For example, if the north-through/south-through phase switches to the >>> north-through/north-left phase, the signal light in the north-through >>> direction remains green. Therefore, the green duration for the >>> north-through links is greater than each of the single phases. >>> So I am wondering if there is a way to get this kind of value via Traci. >>> >>> Sincerely, >>> Tianjia Yang >>> >>> On Fri, May 5, 2023 at 2:21 PM Jakob Erdmann <namdre.s...@gmail.com> >>> wrote: >>> >>>> trafficlight.getAllProgramLogics will return a list of programs and for >>>> each program you can retrieve the states and durations for all phases. >>>> >>>> Am Fr., 5. Mai 2023 um 18:11 Uhr schrieb Tianjia Yang < >>>> tianjiayang...@gmail.com>: >>>> >>>>> Hi there, >>>>> >>>>> I am trying to use Python to control a traffic light based on the >>>>> duration in seconds of each link. So I need to obtain the current green or >>>>> red duration for the given link via Traci. >>>>> >>>>> I know that GetPhaseDuration can return the duration for the current >>>>> phase. But I didn't find a way to get the current green or red duration >>>>> for >>>>> a given link. >>>>> >>>>> Would your please help me with this? Thank you for your time. >>>>> >>>>> Sincerely, >>>>> >>>>> Tianjia Yang >>>>> >>>>> _______________________________________________ >>>>> sumo-user mailing list >>>>> sumo-user@eclipse.org >>>>> To unsubscribe from this list, visit >>>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>>> >>>> _______________________________________________ >>>> sumo-user mailing list >>>> sumo-user@eclipse.org >>>> To unsubscribe from this list, visit >>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>> >>> _______________________________________________ >>> sumo-user mailing list >>> sumo-user@eclipse.org >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> sumo-user@eclipse.org >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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