For "clean" junction shapes there are some impacts (most of them small) - larger junctions require more time to pass and thereby reduce flow (larger safety gaps, larger required all-red / clearance time between traffic light phases) - larger junctions provide more place for unprotected left-turning vehicles to wait which may increase left-turn flow at traffic light junctions - smaller junctions increase road space which may reduce the chance of jamming / deadlock
The impact of these shape effects is small when compared to the effects of missing lanes or wrongly defined lane-to-lane connections. If a junction shape is "not clean" (i.e. looks broken) then the algorithm which computes right-of-way may fail and this can be a major problem. Am Di., 26. Apr. 2022 um 03:54 Uhr schrieb yu tang <[email protected] >: > Hi all, > > I found it is hard to edit junctions in NedEdit so that the shapes match > road geometry in real life, meanwhile I think it can be solved by manually > defining the shapes in the corresponding xml file. > > Suppose other conditions keep unchanged and only junction shapes are > refined, does it have any potential influence on simulation accuracy? Or do > we have better solutions to addressing junction shapes? > > > > Best, > Yu > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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