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 Cali
ation and Validation in Traffic Simulation for three softwares (SIDRA,
Aimsun andVissim) . Give an example and explain in detail what measures you would undertake
to cali
ate and validate your model in SIDRA.
Question 2
Following the traffic generation assessment of the newly proposed subu
, 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/ModelCali
ationAndValidation.htm
The expected productions and attractions for the zones are given in the following table:
Zone 1 2 3 Total
Productions XXXXXXXXXX
Attractions XXXXXXXXXX
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
XXXXXXXXXX
Friction
Factor
XXXXXXXXXX 13 9 5
Determine the trip distribution throughout Traffix using gravity model (perform only 2
iterations).