ENG 412 Roads and Traffic Engineering Assignment 1 Due date – Friday 17 April 2020 Note. If any plagiarism detected, you will get zero marks. Question 1 Discuss Model Calibration and Validation in...

Road and Traffic Engineering



ENG 412 Roads and Traffic Engineering Assignment 1 Due date – Friday 17 April 2020 Note. If any plagiarism detected, you will get zero marks. Question 1 Discuss Model Calibration and Validation in Traffic Simulation for three softwares (SIDRA, Aimsun andVissim) . Give an example and explain in detail what measures you would undertake to calibrate and validate your model in SIDRA. Question 2 Following the traffic generation assessment of the newly proposed suburb, The Traffix Municipality has hired you to forecast the trip distribution of the entire Municipality using the following data where the region has been separated into 3 zones (shown in Figure 1). Figure 1- Zone Division Traffix http://www.webpages.uidaho.edu/niatt_labmanual/Chapters/traveldemandforecasting/professionalpractice/ModelCalibrationAndValidation.htm The expected productions and attractions for the zones are given in the following table: Zone 1 2 3 Total Productions 450 250 300 1000 Attractions 425 180 395 1000 The expected travel times between the zones are described using the following matrix: Zone 1 2 3 1 2 3 2 2 4 1 5 3 2 6 1 The relationship with the travel time and the friction factor has been empirically derived as shown below; Travel time 1 2 3 4 5 6 7 8 9 10 Friction Factor 52 82 50 41 39 20 26 13 9 5 Determine the trip distribution throughout Traffix using gravity model (perform only 2 iterations).