I'm referring to the specific CACC model that is described at https://sumo.dlr.de/docs/Car-Following-Models/CACC.html The fact that CACC is a generic term but denotes a specific implementation in SUMO is something that bothers me as well. People might wrongly assume that SUMO has "The" CACC model inside.
regards, Jakob Am Di., 28. Jan. 2020 um 17:54 Uhr schrieb Andrea Marella < [email protected]>: > Hi dear, > > interesting topic. > Just one clarification about #1 Jakob's sentence about: ".. of that > model", "that" is it understood as in general or as this specific CACC > model? > > Thanks > > > *Andrea Marella* | Ingegnere della sicurezza e dei trasporti > > *Traffico & soluzioni ITS* > *Nuovo sito! **www.trafficlab.eu* <http://www.trafficlab.eu> > cel. +39 338 190 1680 > tel. +39 0173 471 157 > Via G. Rossini 14, 12051 - Alba (CN) Italy > > RISPETTA L'AMBIENTE: SE NON TI È NECESSARIO NON STAMPARE QUESTA EMAIL. > THIS E-MAIL AND ANY ATTACHED FILES ARE CONFIDENTIAL, PROTECTED BY > COPYRIGHT AND MAY BE LEGALLY PRIVILEGED. > > > Il giorno mar 28 gen 2020 alle ore 08:32 Jakob Erdmann < > [email protected]> ha scritto: > >> Hello, >> 1) the CACC is known to cause collisions. For this reason I'm not a big >> fan of that model and I'm inclined to refer you to the original authors of >> the model for any issues it's causing. >> 2) I've your provide all the input files for reproducing a collision >> scenario (network, vehicles etc), I'll take a look and maybe I'll find more >> issues than I already know of. Send them privately if needs be. >> 3) how are you measuring collisions? The configuration you sent is >> configured to completely ignore them. >> >> regards, >> Jakob >> >> Am Mo., 27. Jan. 2020 um 14:14 Uhr schrieb Bart Ons <[email protected] >> >: >> >>> Hi, >>> >>> >>> >>> Please, find below a description of a problem that find each time I run >>> simulations. >>> >>> It is related to the CACC car following model. >>> >>> >>> >>> >>> >>> *Problem description:* >>> >>> In SUMO simulations, I have a case where a car is stand still on a >>> motorway with the purpose to provoke collisions. >>> >>> Peculiarly, A huge number of collisions emerges for the *CACC* model, >>> while I have no collisions for the ACC model within the exact same >>> conditions. >>> >>> >>> >>> I have a minimal number of parameters for the CACC or ACC model. I’m not >>> using traci to initiate a TOR >>> >>> There is also no difference whether the parameter “has.toc.device” is >>> set to True or False for different simulations. >>> >>> Do anyone knows why there is a huge difference? >>> >>> >>> >>> Here, you find the number of collisions when using the *CACC* model for >>> CAVs and CVs >>> >>> *mixes proportion* >>> >>> *number of v/h* >>> >>> *CAV* >>> >>> *CV* >>> >>> *Number of collisions (50 minutes)* >>> >>> 1800 >>> >>> 0% >>> >>> 15% >>> >>> 55 >>> >>> 1800 >>> >>> 25% >>> >>> 15% >>> >>> 246 >>> >>> 1800 >>> >>> 50% >>> >>> 15% >>> >>> 565 >>> >>> >>> >>> >>> >>> Here, you find the number of collisions when using the *ACC* model for >>> CAVs and CVs, keeping everything the same except for the driver model >>> >>> *mixes proportion* >>> >>> *number of v/h* >>> >>> *CAV* >>> >>> *CV* >>> >>> *Number of collisions (50 minutes)* >>> >>> 1800 >>> >>> 0% >>> >>> 15% >>> >>> 0 >>> >>> 1800 >>> >>> 25% >>> >>> 15% >>> >>> 0 >>> >>> 1800 >>> >>> 50% >>> >>> 15% >>> >>> 0 >>> >>> >>> >>> >>> >>> >>> >>> More info: >>> >>> OS: Linux ubuntu 4.15.0-74-generic #83~16.04.1-Ubuntu SMP Wed Dec 18 >>> 04:56:23 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux >>> >>> SUMO: Eclipse SUMO Version 1.2.0 Build features: >>> Linux-4.4.0-146-generic x86_64 GNU 5.4.0 None Proj GUI GDAL GL2 >>> >>> >>> >>> In attachment are some input files >>> >>> Thanks a lot for considering my problem. >>> >>> >>> >>> Kind regards >>> >>> Bart Ons >>> >>> *Transport & Mobility Leuven* >>> >>> TEL +32 16 95.71.55 >>> >>> >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> To change your delivery options, retrieve your password, or unsubscribe >>> from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To change your delivery options, retrieve your password, or unsubscribe >> from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > [email protected] > To change your delivery options, retrieve your password, or unsubscribe > from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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