Hello, The value of waitSteps counts the number of simulation steps in which a vehicle was waiting. So if your vehicle waits for 3 seconds and you simulation with --step-length 0.2 that would be 15 waitSteps. In the latest development version, the attribute waitSteps is replaced with waitingTime which is measured in seconds. ( http://sumo.dlr.de/wiki/ChangeLog#Git_master).
The value of tau determines the desired time-headway between successive vehicles. The exact usage of this value depends on the car following model (see http://sumo.dlr.de/wiki/Definition_of_Vehicles,_Vehicle_Types,_and_Routes#Car-Following_Models ) To model different perception-reaction times, see http://sumo.dlr.de/wiki/Car-Following-Models#Model_Parameters regards, Jakob 2018-04-10 2:50 GMT+02:00 Rahimi, Tariq Rahim < tariqrahim.rah...@rockets.utoledo.edu>: > Hello everyone, > > > When I output the tripinfo, it says waitSteps= an integer value. How can I > get this or the total waiting time for each vehicle in seconds? Also, how > can I calculate a queue length? > > > What is the concept of time Step? when I generate a route file with 12 > vehicles departing at the same time step but in different time frame, such > as the first vehicle departs at 0 seconds, the second at 3rd second, the > third one in 6th second but they all are departing at the same time step. > Here, the time step in 9 seconds. 10 minutes later, there are 5 vehicles > departing at the same time step and the time step there becomes 5 seconds. > > > What can I make of time step if I want to calculate the waiting time at an > intersection? > > > Also, any ideas on what does tau trigger? what file can I find it's source > code and what functions are related to it? I want to simulate different > perception-reaction times (0.5 second, 1 second, 2 seconds), How should I > go for it? > > > Thank you, > > > * ------------------------------------- Tariq R Rahimi* > Graduate Student > >
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