Hi Marie, Hi guys,
I’m sorry to say, but I still was not successful on getting this „speed mode“ bits set. I’ve implemented something Which at least doesn’t throw an error ;) but in my short little testing scenario, cars keep holding in front of a all-time-red Traffic light instead of ignoring it. Am I just awaiting too much here, or should the cars ignore the traffic light, when speed mode is Set to 0 (= 0 0 0 0 0 )? With this said, I at least successfully generated some accidents via either setting my Ego-cars deceleration or Tau to 0, while approaching the leading car with high speed. I found this … “MSLane::handleCollision“ …which deals with the accident and now I am thinking about implementing some TraCI boolean, which can be queried, to check whether a car is subject to an accident or not. Before I start working, I wanted to ask, whether there already is a solution for that, or whether this would be new? @ Stefan: where have you guys implemented the “crash” animation? Do you stick with SUMO or do you also somehow send it to Matlab ( I guess the plots are Matlab) ? Many many thanks, marcus From: Jakob Erdmann [mailto:[email protected]] Sent: Mittwoch, 3. September 2014 13:25 To: Marcus Müller Cc: Marie-Ange Lebre; sumo-user Subject: Re: [sumo-user] Let car ignore traffic light or other rules Hello, to be honest, I was not aware that this method is missing in the current python-TraCI-client. This is now tracked here: http://sumo-sim.org/trac.wsgi/ticket/1423 and should not take long to fix. If you want to implement it yourself, take a look at the implementation of the setLaneChangeMode() command. regards, Jakob 2014-09-03 12:19 GMT+02:00 Marcus Müller <[email protected] <mailto:[email protected]> >: Hi Marie, I'm stuck at the same point right now. Having problems to understand how the TraCI Syntax works, espacially in case of a Bitstream argument. Please checkout TraCI4Matlab or TraCI4J which provide wrappers for Matlab or Java. They have lots of TraCI methods already implemented. Right now I am trying to implement the setSpeedMode() method, because exactly this one is missing. But hopefully I am close to a solution as I just found the "traci.sendByteCmd". Lets see... Regards, Marcus > Am 03.09.2014 um 12:07 schrieb Marie-Ange Lebre <[email protected] > <mailto:[email protected]> >: > > Hi Stefan, hi Marcus > > Thank you for your explanation ! Very useful, and thanks a lot for sharing > your paper ! > I just have a question, I don't know how to add additonal bits to the traci > command Change Vehicle State/speed mode, in order to configure the behavior > at intersections in files of sumo ... What lines I have to modify in which > files ? > > Can you help me ? > > Best Regards, > > Marie-Ange > > > 2014-09-02 20:22 GMT+02:00 Marcus Müller <[email protected] > <mailto:[email protected]> >: >> Wow, >> >> thank you so much! I'm very grateful to have you as a contact who is already >> performing this >> successful. Thanks for sharing the paper. >> Do you already know where your Demo will take place? >> >> Regards, >> >> marcus >> >> -----Original Message----- >> From: Stefan Joerer [mailto:[email protected] <mailto:[email protected]> >> ] >> Sent: Dienstag, 2. September 2014 19:39 >> To: [email protected] <mailto:[email protected]> >> Subject: Re: [sumo-user] Let car ignore traffic light or other rules >> >> Hi Marie, hi Marcus, >> >> I have been using SUMO for quite a while to simulate crashes at >> intersections. In the past this was a bit tricky, but since Version >> 0.20.0 this is very easy accessible via TraCI: >> >> Quote from ChangeLog: >> "added additonal bits to the traci command Change Vehicle State/speed mode >> to configure the behavior at intersections. This can be used to make >> vehicles ignore right-of-way rules and also to force them to drive across a >> red light." >> >> Have a look at: >> >> http://sumo-sim.org/userdoc/TraCI/Change_Vehicle_State.html >> >> speed mode (0xb3) >> >> bit3: Regard right of way at intersections >> >> Hope this helps you! We have also proposed a simple intersection approach >> model which resembles different driver behaviors for intersection approaches: >> >> Stefan Joerer, Bastian Bloessl, Matthaeus Huber, Abbas Jamalipour and Falko >> Dressler, "Simulating the Impact of Communication Performance on Road >> Traffic Safety at Intersections," Proceedings of 20th ACM International >> Conference on Mobile Computing and Networking (MobiCom 2014), Demo Session, >> Maui, HI, September 2014. (to appear) >> >> Available: http://www.ccs-labs.org/bib/joerer2014simulating/ >> >> Cheers, >> Stefan >> >> -- >> Stefan Joerer, MSc >> Institute of Computer Science >> University of Innsbruck, Austria >> Phone: +43 512 507 53254 <tel:%2B43%20512%20507%2053254> >> http://ccs-labs.org/~joerer/ >> >> On 09/03/2014 02:26 AM, Marcus Müller wrote: >> > Hi Marie, >> > >> > >> > >> > please be aware that I am completely new to this – so please don’t >> > take my word for gold :) >> > >> > But in this very question I have already two answers of Jakob which I >> > would like to append, >> > >> > in case that you are not member of the sumo-dev group. >> > >> > Today I had some problems getting TraCI to run, but now, that these >> > probs are solved I start to >> > >> > try out the following suggestions: >> > >> > >> > >> > “””””””””””# 1 #””””””””””” >> > >> > Hello, >> > >> > it should be quite easy to modify the car-following model so as to force >> > (rear collision) accidents. >> > >> > The current (default) model computes the maximum speed which still allows >> > braking if the leaders were to brake. This velocity is then used by the >> > vehicle (if the vehicle parameters and speed limit allow). By modifying >> > the model so as to return a larger value, the vehicle will drive in an >> > "unsafe" manner and will crash if the leader vehicle brakes hard. >> > >> > Note, that sumo will flag the situation as a collision as soon as the >> > leader comes within the "minGap" of the follewer vehicle and will >> > immediately "teleport" to follower vehicle to a subsequent lane (if you >> > want to make sure that vehicles intersect closely you should set the >> > minGap attribute to 0). >> > >> > Flanking collisions are more difficult to create. Head-on collisions are >> > currently not possible. >> > >> > Also, sumo hardly models any physics, besides limiting acceleration and >> > deceleration. You need to modify these parametesr ("accel" and "decel") to >> > simulation different road conditions. >> > >> > >> > >> > regards, >> > Jakob. >> > >> > “”””””””””””””””””””””””””” >> > >> > >> > >> > “””””””””””# 2 #””””””””””” >> > >> > Hello, >> > >> > see <http://sumo-sim.org/wiki/TraCI/Change_Vehicle_State> >> > http://sumo-sim.org/wiki/TraCI/Change_Vehicle_State >> > >> > The commands 'speed mode' and 'lane change mode' have some safety-relevant >> > flags. >> > >> > You can only set these via TraCI at the moment. >> > >> > regards, >> > Jakob >> > >> > “”””””””””””””””””””””””””” >> > >> > >> > >> > Hope this helps, >> > >> > >> > >> > Marcus >> > >> > >> > >> > >> > >> > >> > >> > From: Marie-Ange Lebre [mailto:[email protected] >> > <mailto:[email protected]> ] >> > Sent: Dienstag, 2. September 2014 18:08 >> > To: Marcus Müller >> > Cc: sumo-user >> > Subject: Re: [sumo-user] Let car ignore traffic light or other rules >> > >> > >> > >> > Hi Marcus, >> > >> > >> > >> > Thanks a lot for your answer and your help ! >> > >> > Ok, I understand that commands with Traci are not able to break the >> > security mode tanks to your email. >> > >> > >> > >> > Maybe my question is stupid but do you know where we can modify the >> > settings "speed mode" or "lane change mode" in sumo roots? >> > >> > >> > >> > Best Regards and thanks a lot, >> > >> > >> > >> > M-Ange >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > 2014-09-02 17:35 GMT+02:00 Marcus Müller <[email protected] >> > <mailto:[email protected]> >> > <mailto:[email protected] >> > <mailto:[email protected]> > >: >> > >> > Hi Marie, >> > >> > >> > >> > Good to hear that there is someone working on this topic too. >> > >> > >> > >> > As far as I understand right now, the different models in SUMO, here >> > especially the car following model and maybe the junction model, are >> > designed to avoid such dangerous situations. (As we would do as real >> > drivers as well). >> > >> > I guess the maximum speed parameters doesn't overwrite such security >> > critical decisions like breaking at a traffic light. >> > >> > >> > >> > I think there are other settings, like "speed mode" and "lane chnage mode" >> > highlighted by Jakob before, which can be used to achieve the desired >> > red-light behaviour. >> > >> > >> > >> > I will keep you updated with my latest results on that. >> > >> > >> > >> > Regards, >> > >> > >> > >> > Marcus >> > >> > >> > >> > >> > >> > >> > >> > >> > Am 02.09.2014 um 17:10 schrieb Marie-Ange Lebre <[email protected] >> > <mailto:[email protected]> <mailto:[email protected] >> > <mailto:[email protected]> > >: >> > >> > Hello, >> > >> > I try also to push cars to ignore traffic lights. I use >> > traci.vehicle.setSpeed(vehID, Maxspeed) to allow cars to have the maximum >> > allowed speed ; but in the simulation, car doesn't take into account my >> > command and stops at the yellow light. >> > >> > Can you suggest an idea ? >> > >> > Regards and thanks a lot, >> > >> > M.Ange >> > >> > >> > >> > 2014-09-01 8:57 GMT+02:00 Jakob Erdmann <[email protected] >> > <mailto:[email protected]> <mailto:[email protected] >> > <mailto:[email protected]> > >: >> > >> > Hello, >> > see <http://sumo-sim.org/wiki/TraCI/Change_Vehicle_State> >> > http://sumo-sim.org/wiki/TraCI/Change_Vehicle_State >> > The commands 'speed mode' and 'lane change mode' have some >> > safety-relevant flags. >> > You can only set these via TraCI at the moment. >> > regards, >> > Jakob >> > >> > >> > >> > 2014-08-31 23:32 GMT+02:00 Marcus Müller < >> > <mailto:[email protected] >> > <mailto:[email protected]> > [email protected] >> > <mailto:[email protected]> >: >> > >> >> Hi all, >> >> >> >> >> >> >> >> Is there a way to make cars ignore traffic lights or other rules to >> >> force “accident like behavior” ? >> >> >> >> What do you think, would be the best approach ? >> >> >> >> >> >> >> >> Regards and many thanks in advance, >> >> >> >> >> >> >> >> marcus >> >> >> >> >> >> --------------------------------------------------------------------- >> >> --------- >> >> Slashdot TV. >> >> Video for Nerds. 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