Hello, thank you for your feedback. As you may have seen from the wiki, there is a profound lack in detailed model documentation. We also lack comprehensive tests for validating model functions in isolation. Unfortunately, the original developers are not available anymore so any improvements in this regard will be piecemeal.
1. The school opening and closing hours should have an effect if there are households with school-children and the school is not reachable by public transport (or walking) and there is still a car and driver available for the child. If you are willing to create a small example (network and statistics file) where these conditions are fulfilled, yet the hours have no effect, I will investigate this as a bug. 2. The wiki gives an example input that results in a classic bi-modal demand distribution with peaks at 8am an 5pm (see updated file links at http://sumo.dlr.de/wiki/Demand/Activity-based_Demand_Generation#Example). Unfortunately, I have no idea what would be causing this issue in your scenario. If you can narrow it down to a small variant that exhibits the 24h peak I will take a look. 3. If by 'same trip' you mean 'same sequence of edges through the network' that this is likely due to a lack of traffic assignment. Please read the updated description at http://sumo.dlr.de/wiki/Demand/Activity-based_Demand_Generation#Example regards, Jakob 2017-04-05 16:47 GMT+02:00 Pyatkova, Katya <[email protected]>: > Dear SUMO community, > > I am modelling the traffic in a small city (140 000 inhabitants) and > decided to use activitygen. I made a bit of sensitivity analysis with the > parameters in the stat.xml file and I noticed some particularities and > wanted to discuss them with you. > > > 1. Changes in the beginning or ending time of the schools do not > influence the traffic demand. Moreover, I have several schools and > nurseries in the network and I haven't observed heavier traffic around > them. I describe the schools as follows: > > <school edge="-111495" pos="23.0" beginAge="12" endAge="18" capacity="500" > opening="28800" closing="46800" /> > > Is the school scheme working? If it is, please advise how it is best to > use it. > > > 2. If 24 hours simulation is used, the number of trips per hour > gradually increases in the evening (regardless the value of > freeTimeActivityRate) and the highest value is always at 24 o'clock. Is > there any way this can be reduced? > > > 3. To distribute the traffic demand, I am specifying edges where > residential or industrial areas are located. The network is flooded by > vehicles that seem to have the same trip. I haven't succeeded in making the > traffic a bit more evenly distributed. If I increase the parameter > uniformRandomTraffic, it seems it adds more trips to the existing ones. I > have tried selecting multiple nearby roads, just to distribute the traffic > a bit more evenly, but it doesn't do any good. Any suggestions how it can > be made more realistic are most welcome. > > > I appreciate any help you can provide on these questions! > > Best regards, > > Katya Pyatkova > MSc, PhD Student > Centre for Water Systems > College of Engineering, Mathematics and Physical Sciences (CEMPS) > University of Exeter, North Park Road, Exeter EX4 4QF, United Kingdom > [email protected]<mailto:[email protected]>, +44 (0) 7598 > 659122<tel:%2B44%20%280%29%207598%20659122> > > > ------------------------------------------------------------ > ------------------ > 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
