1) Sorry for that. You also need to set netconvert/netedit option '--geometry.avoid-overlap false' to make this happen (otherwise netconvert tries it's best to modify geometries and avoid such overlap). In Netedit you can set the option using F10 (see https://sumo.dlr.de/docs/NETEDIT.html#processing_menu_options).
Unfortunately, the latest release of SUMO has a bug where the avoid-overlap setting is lost when re-opening the network in NETEDIT and then saving it again. The bug is fixed and the nightly development version will be updated tomorrow. Hence, I recommend that you update SUMO tomorrow ( https://sumo.dlr.de/docs/Downloads.php#sumo_-_latest_development_version) 2) No. Right now collision checking is not done if you simply put edges on top of each other. However, you could combine my two previous suggestions to get collision detection (collisions are registered on opposite-direction overtaking). To make the visualization look nice, you just have to make the obstacle cars black or transparent. Am Mo., 18. Mai 2020 um 03:09 Uhr schrieb K M <kadrimu...@gmail.com>: > Hello all, > > Thank you for the great ideas Jakob, > > 1) Can you please explain what you mean when you say to place the two > edges on top of each other with reversed geometries? Do they share the same > nodes? (my failed attempts are below) > > 2) Is a collision supposed to be detected in SUMO GUI with a warning > message or something like that in the output? > > > I attempted your method #2 in two ways. (I also tried simply narrowing the > lane width and widening the cars on a regular two-way road, but it seems > it's only for visualization; I think it had no effect because I got no > message in SUMO GUI of a collision or issue). > > - When any 2 edges (parallel and opposite in direction) were connected > to the same 2 nodes, as much as I tried in NetEdit to make the edges > overlap, NetEdit automatically changed the Y-coordinates in the shapes of > the lanes to make them not overlap. So that did not work. > > > - I then made the edges in each direction connected to a different set > of nodes (as in the code snippet below), and made the nodes almost fully > overlap each other but without them merging. The result was that visually > the lanes were above each other, but again SUMO GUI showed no sign of an > issue or collision as the vehicles passed through each other and kept > going. > > [image: image.png] > > >> >> >> >> >> >> >> *<nodes> <node id="1" x="225.20" y="6.55" type="dead_end"/> <node >> id="2" x="105.78" y="1.76" type="priority"/> <node id="3" x="-0.74" >> y="8.28" type="dead_end"/> <node id="4" x="-0.47" y="5.09" >> type="dead_end"/> <node id="5" x="105.77" y="3.57" type="priority"/> >> <node id="6" x="225.86" y="3.23" type="dead_end"/></nodes>* >> > > > >> >> >> >> >> *<edges> <edge id="1to2" from="1" to="2" priority="1" numLanes="1" >> speed="13.89" shape="224.85,1.44 105.78,1.76" spreadType="center"/> >> <edge id="2to3" from="2" to="3" priority="1" numLanes="1" speed="13.89" >> shape="105.78,1.76 -1.68,3.11" spreadType="center"/> <edge id="4to5" >> from="4" to="5" priority="1" numLanes="1" speed="13.89" shape="-0.48,3.46 >> 105.80,1.92" spreadType="center"/> <edge id="5to6" from="5" to="6" >> priority="1" numLanes="1" speed="13.89" shape="105.77,1.92 225.90,1.59" >> spreadType="center"/></edges>* >> > > On Sun, May 17, 2020 at 7:30 PM Jakob Erdmann <namdre.s...@gmail.com> > wrote: > >> Hello, >> right now, full bidirectional operation is only possible with trains. >> You have two methods to emulate the desired behavior for cars: >> >> 1) by using opposite direction driving ( >> https://sumo.dlr.de/docs/Simulation/OppositeDirectionDriving.html) >> - place lots of standing cars as obstacles on the road. Vehicles will >> be forced on the opposite side to pass the obstacles. >> - areas without obstacles are the detour locations. >> >> 2) >> - place two edges going in opposite direction directly on top of each >> other (i.e. by setting attribute spreadType="center" and giving them the >> reversed geometry). >> - use TraCI to detect dangerous situations >> - call vehicle.setStop(...,flags=traci.constants.STOP_PARKING) to clear >> the road for oncoming traffic and avoid a collision >> >> regards, >> Jakob >> >> Am So., 17. Mai 2020 um 03:00 Uhr schrieb K M <kadrimu...@gmail.com>: >> >>> Hello all, >>> >>> I have a novel situation that I need to model and I would like to know >>> if it is technically possible in SUMO: >>> >>> I must model a one lane road which operates in both directions, i.e. the >>> road does not have a lane in each direction, it is literally one lane used >>> by vehicles going in opposite directions, obviously towards each other. >>> >>> (Just for context, the idea is to make the oncoming vehicles somehow >>> (perhaps using TraCI or something) avoid colliding into each other by >>> detecting each other from a distance and then one of them rerouting into a >>> small pit-stop or shoulder or D-tour until it safe to get back on the road >>> and continue moving forward.) >>> >>> Is it even technically possible to code such a road in SUMO? >>> >>> Thank you, >>> >>> Kadri >>> _______________________________________________ >>> sumo-user mailing list >>> sumo-user@eclipse.org >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> sumo-user@eclipse.org >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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