CE 573 Transportation Planning - Fall 2001

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Class Notes - Class 22 (Monday, October 29, 2001)

Click here for lecture slides.

During the next several weeks, we will learn how to use the tools that make up the four-step transportation demand forecasting model.  Today we will learn about the basic network characteristics and how we develop a database that can be used for this modeling process.  For example, following is the x,y coordinates for the network nodes.

Node data
 
x coordinate
 
y coordinate
 
1
 
-4.500
 
0.000
 
2
 
-2.500
 
1.000
 
3
 
-4.500
 
3.125
 
4
 
4.250
 
1.875
 
5
 
4.250
 
0.000
 
6
 
4.250
 
-2.000
 
7
 
-2.500
 
-1.125
 
8
 
-2.500
 
2.625
 
9
 
-2.500
 
-3.250
 
10
 
-3.250
 
1.875
 
11
 
-3.250
 
0.000
 
12
 
-3.250
 
-2.000
 
13
 
-2.500
 
1.875
 
14
 
-2.500
 
0.375
 
15
 
-2.500
 
0.000
 
16
 
-2.500
 
-2.000
 
17
 
3.000
 
1.875
 
18
 
3.000
 
0.000
 
19
 
3.000
 
-2.000

We will investigate how to create a network data base that includes the link data, based on the given (x,y) coordinate data.