No. It's still a misunderstanding. "apparentDecel" is also active when the truck is moving at constant speed. It describes *potential* deceleration that will be taken into account by the follower vehicles (the distance to the leader vehicle must always take into account what the leader may do in the future). I recommend that you play around with the values and observe the effects yourself.
Am Di., 23. Nov. 2021 um 19:38 Uhr schrieb François Vaudrin < [email protected]>: > I think I misspoke. > > > I understand that "apparentDecel" only applies when the truck is > decelerating. In other words, if the truck is traveling at a constant > speed, it is not decelerating and therefore the min-gap applies as usual. > > > And when the truck is standing means that it is immobilized, so it is also > the usual min-gap that applies. > > > Is it that? > > > Thanks > *rançois * > > > ------------------------------ > *De :* sumo-user <[email protected]> de la part de Jakob > Erdmann <[email protected]> > *Envoyé :* mardi 23 novembre 2021 12:56 > *À :* Sumo project User discussions <[email protected]> > *Objet :* Re: [sumo-user] Min gap to follow a truck in SUMO > > No. apparentDecel takes effect as long as the truck is moving. Vehicles > using the Krauss-model will keep a gap that allows safe braking in case the > leader vehicle brakes with apparentDecel (even though the leader will in > fact only brake with its 'decel' value). If apparentDecel is higher than > decel, vehicles will keep a larger gap then they would otherwise. That gap > increases depending on the speed of the truck. Only when the truck is > standing, it's decel or apparent decel plays no role since it obvious > cannot brake anymore. > > Am Di., 23. Nov. 2021 um 17:27 Uhr schrieb François Vaudrin < > [email protected]>: > > Hallo Jakob, > > > I understand "apparentDecel ' attribute applies to the truck and the > effect is that the vehicles following this truck will keep a greater > distance. > > > Does "when the truck is standing" mean that when the truck is traveling at > a constant speed, the usual min-gap applies because there is no apparent > deceleration? > > > Thank you > > > *François * > > ------------------------------ > *De :* sumo-user <[email protected]> de la part de Jakob > Erdmann <[email protected]> > *Envoyé :* mardi 23 novembre 2021 01:57 > *À :* Sumo project User discussions <[email protected]> > *Objet :* Re: [sumo-user] Min gap to follow a truck in SUMO > > You could accomplish this by updating minGap with TraCI but there are no > provisions in the models / xml inputs to configure this directly. > > The closest thing you could get is to set a high value of 'apparentDecel' > for the trucks which would make following traffic maintain higher gaps. > However, the achieved gap increase would vary according to the speed of the > truck (so you would not see a gap of 60 when the truck is standing). You > should be able to tune this so that you see 60m gaps when a truck is > driving at it's desired travel speed. > > Adding a new carFollowModel that inherits from an existing model and > provides additional minGaps would be another solution. > > regards, > Jakob > > Am Mo., 22. Nov. 2021 um 23:08 Uhr schrieb François Vaudrin < > [email protected]>: > > Hello, > > A HandBook from the Government of New Brunswick (Province of Canada) advises > motorists not to follow a semi-trailer truck within 60 meters because of the > blind spot. > > It seems reasonable and I was wondering if it is possible to provide a > different min-gap for a vehicle when it follows a truck on a higway ? > Thank you > > > > *François * > CANADA > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.eclipse.org%2Fmailman%2Flistinfo%2Fsumo-user&data=04%7C01%7Cfrancois.vaudrin.1%40ulaval.ca%7Cf441df7367dd4ef7d37008d9aeaaa0d4%7C56778bd56a3f4bd3a26593163e4d5bfe%7C1%7C0%7C637732870734254076%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ewF6EsF0POI0YR1fvPOfVznmZhGUOnkjD7QvPUcAI3M%3D&reserved=0> > > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.eclipse.org%2Fmailman%2Flistinfo%2Fsumo-user&data=04%7C01%7Cfrancois.vaudrin.1%40ulaval.ca%7Cf441df7367dd4ef7d37008d9aeaaa0d4%7C56778bd56a3f4bd3a26593163e4d5bfe%7C1%7C0%7C637732870734264072%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=4JWjzOwxITh9nMTqLLsp%2BqOFkQMdyPbtzXmvc%2F8l0%2B8%3D&reserved=0> > > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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