Hi Michael, in my previous tests I used the default car following model (carFollowing-Krauss)specifing the mingGap as minGap = "1" and in some circumstances I got this values from the getLeader method.
39.04120129 30.80244446 22.25698386 12.35251871 5.246203698 1.330938864 0.028784268 0.008626148 0.001707736 0.001297148 0.001090875 0.001022937 0.001010266 0.001003249 0.001000934 0.00100031 0.001000016 0.001000008 0.001000001 0.001 0.001 0.001 0.001 0.001 After the last value, the leader disappeared and i didn't get any result from getLeader method, as it is defined. Besides, I noticed that the streak of these "strange" values is often short, less than 15/20 steps. I tried the original Krauss car following model (attribute=KraussOrig1) but I obtained worse results. In particular the distance is quite always under the specified gap. Should I try some different car following models? Thank you. Regards, Alessandro ________________________________ Da: Michael Behrisch <[email protected]> Inviato: mercoledì 26 luglio 2017 17:23:09 A: Alessandro Virgilio; [email protected] Oggetto: Re: [sumo-user] Questions about Gap between two vehicles and getLeader method Hi Alessandro, if you use the default Krauss model the vehicles should always respect the minGap except for rare circumstances which trigger emergency breaking (missing or short yellow phases in traffic lights for instance). Can you send a small example? Best regards, Michael Am 26.07.2017 um 11:00 schrieb Alessandro Virgilio via sumo-user: > Hi, I have a question about the minGap attribute and the output given by the > method getLeader in Traci for python. > > > I defined two vehicle types, giving some attributes and the mingap. Then, for > each simulated vehicle, I extracted the distance with the leading vehicle, > using the method getLeader. > > > Sometimes it happens that the distance with the leading vehicle is less than > the specified minGap. I can't understand if it's a bug or I misunderstood the > meaning of the minGap attribute. Is it applied only with vehicles stuck in > traffic jam? In this case, is there any way to define a minum distance to > keep for each vehicle during the simulation? > > > Using sumo 0.30.0 and python 2.7 > > Thank You. > > > Regards, > Alessandro V > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > sumo-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sumo-user > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
