I appreciate your response,
I installed the newer version just yesterday and I am still getting waitSteps in the Tripinfo output and I don't get any waitingTime. Additionally, where can I get a good measure of queue length and congestion? Thank you, ------------------------------------- Tariq R Rahimi ________________________________ From: Jakob Erdmann <namdre.s...@googlemail.com> Sent: Tuesday, April 10, 2018 3:00:19 AM To: Rahimi, Tariq Rahim Cc: Sumo project User discussions Subject: Re: A question about timestep and tau 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<https://urldefense.proofpoint.com/v2/url?u=http-3A__sumo.dlr.de_wiki_ChangeLog-23Git-5Fmaster&d=DwMFaQ&c=heEcP2AsrLOv4XP8e7I9NA&r=hcDhabDH71qjaXA3guxceND6Pl-jLmH9TuxEWZxKw1xUdKLCB6do1p6Q6bjgl8Fe&m=WFYrbGGcPNeSYHOh2KWsVWWO3Zdu-Yc8HIH8OxM9TG4&s=pxZRu4YuCEwEuwWk0S20Sc4c4N1nUWfSyE6vtpXjt7Q&e=>). 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<https://urldefense.proofpoint.com/v2/url?u=http-3A__sumo.dlr.de_wiki_Definition-5Fof-5FVehicles-2C-5FVehicle-5FTypes-2C-5Fand-5FRoutes-23Car-2DFollowing-5FModels&d=DwMFaQ&c=heEcP2AsrLOv4XP8e7I9NA&r=hcDhabDH71qjaXA3guxceND6Pl-jLmH9TuxEWZxKw1xUdKLCB6do1p6Q6bjgl8Fe&m=WFYrbGGcPNeSYHOh2KWsVWWO3Zdu-Yc8HIH8OxM9TG4&s=ReunekgtCFa-RhcSIXd0kvHxyEyDHtxhdFyogahxqlU&e=>) To model different perception-reaction times, see http://sumo.dlr.de/wiki/Car-Following-Models#Model_Parameters<https://urldefense.proofpoint.com/v2/url?u=http-3A__sumo.dlr.de_wiki_Car-2DFollowing-2DModels-23Model-5FParameters&d=DwMFaQ&c=heEcP2AsrLOv4XP8e7I9NA&r=hcDhabDH71qjaXA3guxceND6Pl-jLmH9TuxEWZxKw1xUdKLCB6do1p6Q6bjgl8Fe&m=WFYrbGGcPNeSYHOh2KWsVWWO3Zdu-Yc8HIH8OxM9TG4&s=BL5SFhMbMbhdbrBaFVX7lFagcvGK1aOtCHt_MpQ2RKc&e=> regards, Jakob 2018-04-10 2:50 GMT+02:00 Rahimi, Tariq Rahim <tariqrahim.rah...@rockets.utoledo.edu<mailto: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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