Jakob, Thanks for your reply.
More questions about the previous email. 1) the probability could be set in the range of (0,1], and <00 value means *normal vehicles* will not perform rerouting. - What kind of vehicle is not the *normal vehicle*? The the only scenario I know is to use Traci to reroute in the simulation. - If I set <device.rerouting.probability value="*0.5*"/> and the s log.txt is printed as below: Performance: Duration: 297822ms Real time factor: 18.1316 UPS: 32080.783152 Vehicles: * Inserted: 14158 (Loaded: 17538)* * Running: 2061* * Waiting: 3356* Does it mean SUMO would choose 50% of *vehicles* to have the ability of rerouting? - The *vehicles* are in terms of the *inserted vehicles(14158)* or the *loaded ones(17538)*？ - How does SUMO *decide which vehicle* can reroute? - For example, edge A1B1 and edge B1A1 are *100m*, the number of vehicles on edgeA1B1 is *18*(edge *A1B1* most in congestion), the number of vehicles on edge *B1A1 is 6*. The Sumo would choose 10 vehicles among 20 vehicles on edge A1B1 and 3 vehicles among 6 vehicles on edgeB1A1. Is that right? Obviously, traffic conditions in the two edges are different. Edge A1B1 is mostly in congestion, and vehicles on edge B1A1 can run in free-flow speed. More rerouting devices are assigned to vehicles on edge A1B1 might be a better choice. Could SUMO assign rerouting devices like that, or SUMO uses other more realistic strategies to choose which vehicle can reroute? - As explained in https://sumo.dlr.de/docs/Simulation/Output.html#timing_data - How to let output printed the total time spend routing and average time per routing call? - According to your experience, the suitable frequency of calling rerouting is? 2) as you explained *in 2),* “all vehicles <route-files value="casemy.trips.xml"/>when entering the simulation (pre-insertion rerouting uses the departure as the first routing time) but no further rerouting takes place due to the high period.” In my understanding, - if I use the *trips <route-files value="casemy.trips.xml"/> *in *.sumocfg* file, the “*reroute once*” means *route* or generating the route file firstly for inserted vehicles to let vehicles know edges they are scheduled to drive, and then, during the simulation the inserted vehicle will not reroute due to the high period; - if I have the *trips file*, how could I generate the *route file *randomly? - if I use the routes *<route-files value="casemy.rou.xml"/>* in *.sumocfg* file, the “*reroute once*” means *reroute. *In other words, ， SUMO will assign the fastest routes to all inserted vehicles according to the traffic condition at the inserted time point of vehicles. - Which algorithm does SUMO use to find the fastest routes when vehicles are going to enter into the simulation? The user equilibrium model, such as call *duarouter.exe* run in 50 interaction or other ones? Appreciated in advance! Best regards, Jane Cheung
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