Hello, the option --collisions.check-junctions is very sensitive to the geometry of internal lanes. If this geometry is to "tight" it may trigger collisions even though the simulation logic works as expected. On the other hand, collisions which are detected without this option indicate either unsafe traffic lights, unsafe parameterization or a bug.
If you send me the scenario I will take a look. regards, Jakob 2017-05-29 14:25 GMT+02:00 Joerg Schweizer <[email protected]>: > Dear all, I am pretty active in simulations today and observed many > collisions in my traffic scenario. So I looked at a simple network with a > single junctions when exposed to a reasonable traffic flow. > > For the sumo simulation, I switched on the collision.check-junctions > option. As a result, I got 8 collisions per hour at a single 4-leg priority > junction (with a total of 750 vehicles/h entering from 2 perpendicular > legs). > > When I created vehicle rows (or platoons) by just setting speedDev to a > large value (speedDev="0.5", all other parameters are default) then I got > even 25 collisions per hour. I observed that in this case, vehicle rows > occur and collisions happen when such vehicle rows enter the junction. > > I tried to impose more discipline by using a stop_priority junction. > But also in this case many collision occurred. > > Are these collisions due to an over-sensible detection or is there a way > avoiding them? I have already tweaked my vehicle parameters to the most > cautious setting (infinite impatience, optimum driver skill). > > Any thoughts? > > Best wishes, > Joerg > > > -- > Joerg Schweizer > University of Bologna > DICAM - Transportation Group > Viale Risorgimento, 2, I-40136 Bologna, Italy > Tel: +39 051 209 3338, Fax: +39 051 209 3337 > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > sumo-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sumo-user > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
