1) the distribution assigns a factor to each vehicle by default this is in the range [0.2, 2]. This is multiplied with the speedLimit to compute the desired speed on a given road 2) maxSpeed can override the value of speedFactor * speedLimit
If you already read the page https://sumo.dlr.de/docs/Simulation/VehicleSpeed.html, feel free to point out amendments that would make the explanations there more obvious. Am Do., 20. Aug. 2020 um 05:15 Uhr schrieb Bae, Jong In <[email protected]>: > Thank you for your explanation. > > > 1. So the speed determined through this distribution, is that the > maxSpeed of the vehicle? For example, if the distribution assigns 29m/s to > a vehicle, would that be the maxSpeed of the vehicle? > 2. If the maxSpeed is the hard limit on the speed, does that mean it > can override the lane (or edge) max speed? > > Thank you, > ------------------------------ > *From:* [email protected] <[email protected]> on > behalf of Jakob Erdmann <[email protected]> > *Sent:* Monday, August 17, 2020 2:16 AM > *To:* Sumo project User discussions <[email protected]> > *Subject:* Re: [sumo-user] Understanding SpeedDev. > > the distribution of speeds will have their mean at 30m/s and will be > (almost) normally distributed with a standard deviation of 0.1 * 30 = 3m/s. > This means ~68% drive between 27ms/ and 33ms but 95% will be found between > 24m/s and 36m/s. > ( > https://upload.wikimedia.org/wikipedia/commons/8/8c/Standard_deviation_diagram.svg > ) > It's "almost" normal because sumo caps the normal distribution at > configurable thresholds. By default 100% will drive between [0.2 * 30m/s > and 2 * 30m/s] but you can also configure these thresholds. > Also, the maxSpeed of the vType is a hard limit. > > Am Fr., 14. Aug. 2020 um 21:44 Uhr schrieb Bae, Jong In <[email protected] > >: > > Hello, > > I'm having a trouble with understanding the explanation on how speedFactor > and speed deviation work. > If I'm using the default values of speed factor (1) and speed dev (0.1), > how do they affect the vehicle speed on the lane with maximum speed of > 30m/s? > > Does this mean that the vehicle will drive in the range between 27m/s to > 33m/s (or 30m/s since the max speed is capped at 30m/s)? > And would that be because the lane-assigned speed (30m/s) is multiplied by > the speed factor of 1 with deviation of 0.1? > > Thank you, > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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