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] <javascript:;>>: > > (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] <javascript:;>>: > >> > 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
