It sounds as if the software wasn't recompiled after your change. Deleting the source folder should definitely give an error. Make sure you follow the build-instructions for your operating system: http://sumo.dlr.de/wiki/Developer/Main#Build_instructions also see the (somewhat outdated) documentation on implementing an additional cf-model: http://sumo.dlr.de/wiki/Developer/How_To/Car-Following_Model
regards, Jakob 2014-10-21 22:27 GMT+02:00 Charalambos Menelaou < [email protected]>: > Thanks for fast response, > > I wondering what is thw path to "hack" the car following models to try > what record set. I modified files cfmodels on source folder but i do not > notice any change even if i delete the source folder > > best regards > > On 10/21/2014 11:20:39 AM, Jakob Erdmann <[email protected]> > wrote: > Hello, > the relationship between density and speed is a macroscopic property of > traffic and I don't know a single microscopic model which uses density > directly. Within a micro-simulation this relationship is induced by > microscopic interactions between the vehicles. As far as my understanding > goes, part of this is the interaction between vehicles of different speed > and some other part may be due to feedback loops when drivers are braking > stronger than absolutely needed. This latter part was discussed a while ago > on the mailing list and some car-following model changes were proposed to > increase the effect size. You can find a record of that discussion here: > http://comments.gmane.org/gmane.science.simulation.sumo.user/5926 > regards, > Jakob > > 2014-10-19 0:36 GMT+02:00 Charalambos Menelaou < > [email protected]>: > >> >> On 10/19/2014 1:19:45 AM, Charalambos Menelaou < >> [email protected]> wrote: >> Hi, >> >> I understand that you had said me but, the idea is that in circle after >> long time all vehicles their following the vehicle with the lowest speed. >> >> I believe that this is not correct since vehicles are not reduce their >> speed because of density but because they can not overcome their leader. >> >> So, is any model where takes the density as parameter to declare the >> vehicle speed? >> >> (I.P. As density increases the speed decreases.) >> >> Best regards. >> >> On 10/19/2014 12:25:07 AM, Michael Behrisch < >> [email protected]> wrote: >> Hi, >> >> Am 11.10.2014 um 16:59 schrieb Charalambos Menelaou: >> > I was used two scenarios in 4km straight road lane >> > 1. i was generate 2000 vehicles in 500 seconds 400 seconds 300 seconds >> 200 seconds 100 seconds 50 seconds 25 seconds . >> > 2.i was generate for 300 seconds 100 vehicles 200 vehicles 300 vehicles >> 500 vehicles 750 vehicles 1000 vehicles 2000 vehicles 5000 vehicles 10000 >> vehicles >> > and i do not have the same results >> >> Without having vehicles of different speed or bottlenecks it won't be >> possible to reproduce the fundamental diagram on a straight road. This >> is due to the fact that the insertion procedure is somehow so >> conservative that it will not induce enough distortion and after >> insertion the distortions due to the dawdling are also small if all >> vehicles have the same speed. In order to allow the small distortions to >> "pile up" you have to drive in a circle for a long time. This is only an >> abbreviated description, the theory behind the fundamental diagram is >> much more involved and also still under heavy discussion, as far as I >> know. But I hope you get the idea. >> >> Best regards, >> Michael >> >> >> ------------------------------------------------------------------------------ >> Comprehensive Server Monitoring with Site24x7. >> Monitor 10 servers for $9/Month. >> Get alerted through email, SMS, voice calls or mobile push notifications. >> Take corrective actions from your mobile device. >> http://p.sf.net/sfu/Zoho >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/sumo-user >> > > ------------------------------------------------------------------------------ _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
