Hi, yes of course you can set the signals via TraCI but you will not be able to change the connections (the links) itself. I do not know what you mean by dummy nodes, but yes every edge needs a start and an end node.
Best regards, Michael 2013/12/27 Pooja Voladoddi <[email protected]>: > Hello, > > Thanks for replying. > > -- would it not be possible to access individual traffic lights (as in, each > signal per link) using getRedYellowGreenState and setRedYellowGreenState in > the python traci script for controlling traffic ? > Or is importing the csv description the only way to go about it ? > > > --are dummy nodes required at the end of each link ? > > > > Regards, > Pooja. > > On Friday, December 27, 2013, Michael Behrisch wrote: >> >> Hi, >> flow definitions are described here: >> >> http://sumo-sim.org/userdoc/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#Repeated_vehicles >> except that for router input they do not have route childs but from >> and to attributes like trips. >> For the traffic lights I think you misunderstood the documentation, >> there is usually one traffic light logic per junction but it may be >> one signal per link, see here: >> http://sumo-sim.org/userdoc/Simulation/Traffic_Lights.html >> >> Best regards, >> Michael >> >> 2013/12/26 Pooja Voladoddi <[email protected]>: >> > (Forgot to send it to the whole group) >> > >> > Hello, >> > >> > Thanks for your reply. >> > >> > 1) how are flow definitions different from trip files (as in what >> > parameters >> > are defined in it ? I know the syntax of rou.xml and trips.xml but I >> > don't >> > know what goes into flow definitions) . >> > >> > 2) any hints /clues on how to provide only one traffic light per >> > link(/lane) >> > at a junction instead of one traffic light controlling all the links >> > (/lanes)? >> > >> > Merry Christmas to all. >> > ----- >> > >> > Regards , >> > Pooja. >> > >> > >> > On Thursday, December 26, 2013, Michael Behrisch wrote: >> >> >> >> Hi, >> >> you omitted the flow definitions in your call to jtrrouter. >> >> >> >> Best regards, >> >> Michael >> >> >> >> 2013/12/24 Pooja Voladoddi <[email protected]>: >> >> > Dummy nodes- >> >> > >> >> > In implementing a simple grid-like junction, is it necessary for >> >> > later >> >> > versions of SUMO (0.18) to add dummy nodes at the ends of links/edges >> >> > ? >> >> > >> >> > >> >> > JTRROUTER - >> >> > After referring to >> >> > http://sumo-sim.org/userdoc/Demand/Routing_by_Turn_Probabilities.html >> >> > >> >> > I tried to generate route files like so ----> >> >> > >> >> > jtrrouter --turn-ratio-files=trial_one.turns.xml >> >> > --net-file=trial_one.net.xml --output-file=trial_one.rou.xml >> >> > >> >> > however, i am getting an error like this ----> >> >> > >> >> > Error: No route input specified. >> >> > Quitting (on error). >> >> > >> >> > -- If i am not wrong, JTRRouter gives an output rou.xml file so what >> >> > it >> >> > does >> >> > it mean by this error? >> >> > --Also, i was wondering if i could instead write the routes >> >> > explicitly >> >> > using >> >> > python instead of adding probabilities to make the traffic movement >> >> > more >> >> > realistic. >> >> > >> >> > >> >> > One-to-many traffic light control >> >> > >> >> > It says in the documentation that >> >> > >> >> > " In SUMO, a one-to-n dependency between signals and links is >> >> > implemented, >> >> > this means each signal may control more than a single link - though >> >> > networks >> >> > generated by NETCONVERT or NETGENERATE usually use one signal per >> >> > link. >> >> > " >> >> > >> >> > I want to make sure that in a single junction having 4 lanes, each >> >> > lane >> >> > is >> >> > given a GREEN state and RED state in rotation. >> >> > >> >> > For example, Lane 1 is GREEN from 0s to 30s , others are all RED. >> >> > Lane 2 is GREEN from 31s to 45s, others are all >> >> > RED. >> >> > Lane 3 is GREEN from 46s to 60s, others are all >> >> > RED... >> >> > and so on. >> >> > >> >> > So, i want to know if by saying type="traffic_light" at one junction, >> >> > I'm >> >> > initialising only one traffic light for that junction or 4 traffic >> >> > lights >> >> > for the 4 lanes? >> >> > >> >> > If yes, how do I override NETCONVERT's default setting to have 4 >> >> > disconnected traffic lights to operate at one junction instead of >> >> > only >> >> > one? >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > ---- >> >> > Your help is appreciated, thanks in advance. >> >> > >> >> > Regards, >> >> > Pooja Voladoddi >> > >> > ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
