1) Those are conversion relate to simulations with subsecond time resolution 2). Please read more code and come back with a specific question. Also see https://sumo.dlr.de/docs/Simulation/Basic_Definition.html#defining_the_integration_method
Am Mo., 11. Jan. 2021 um 15:11 Uhr schrieb SHANTANU PHANSE < 201911...@daiict.ac.in>: > Sir, > As I mentioned earlier, I am currently studying the implementation of > KraussOrig1 model. Sir, I have a few questions about it. > > 1. I don't understand the macros ACCEL2SPEED, SPEED2ACCEL, DIST2SPEED. > > 2. I don't completely understand the following function, their > implementation, and use. > 2.1 double MSCFModel::maximumSafeFollowSpeed(double gap, double > egoSpeed, double predSpeed, double predMaxDecel, bool onInsertion) > 2.2 double MSCFModel::maximumSafeStopSpeed(double g /*gap*/, double v > /*currentSpeed*/, bool onInsertion, double headway) > 2.3 double MSCFModel::brakeGap(const double speed, const double > decel, const double headwayTime) > > Can you please guide me through this? > > Thanks and regards > Shantanu Phanse > > > On Fri, Jan 8, 2021 at 6:39 PM Jakob Erdmann <namdre.s...@gmail.com> > wrote: > >> Hello, >> even the kraussOrig Model has quite some deviations from the work of >> Krauss. It is based directly on equation 4.8 in the dissertation and >> actually is more like the approach of Gipps discussed at the start of >> Section 5.1. (vSafe is derived directly from braking distance which are >> quadratic in speed). >> The exact commit where the original Krauss equation was changed to the >> current version dates to 2007 ( >> https://github.com/eclipse/sumo/commit/6f7b1d5ffba1ac575988efc5f59b6d6d376a1345#diff-41a035c9bfbce931e5a134ddb3f95190657aa6b183d8db8dfc4a48797d3dfc8c >> ) >> I would assume this was done to fix collisions but the exact reason would >> have to be given by D. Krajewicz. >> >> Some points of note when relating Krauss to KraussOrig1: >> - in the SUMO-Krauss model (not KraussOrig1), braking distances are >> computed depending on the position update rule since an euler-like update >> (move with the speed of the current step) leads to other braking distances >> than a ballistic update (move with the average speed of previous and >> current step). >> - follow speed is a special case of stopping speed (where stop distance = >> gap + leaderBrakeGap) >> - special care is taken when vehicles have different braking capabilities >> because the Krauss equation 4.8 does not guarantee save driving in this >> case (https://arxiv.org/abs/1902.04927) >> >> regards, >> Jakob >> >> Am Fr., 8. Jan. 2021 um 12:02 Uhr schrieb SHANTANU PHANSE < >> 201911...@daiict.ac.in>: >> >>> >>> Hello Sir/Mam, >>> >>> I am new to SUMO. I am learning about the microscopic car following >>> model. My problem is that I am unable to relate the kraussOrig model in the >>> simulator and the krauss model's theory. I am referring to the attached >>> papers for the theory. >>> >>> Please guide me through this. >>> >>> Thanks and Regards >>> Shantanu Phanse >>> _______________________________________________ >>> sumo-dev mailing list >>> sumo-dev@eclipse.org >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-dev >>> >> _______________________________________________ >> sumo-dev mailing list >> sumo-dev@eclipse.org >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-dev >> > _______________________________________________ > sumo-dev mailing list > sumo-dev@eclipse.org > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-dev >
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