Fundamentals of Transportation/Trip Generation/Solution2

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TProblem
Problem:

Modelers have estimated that the number of trips leaving Rivertown (To) is a function of the number of households (H) and the number of jobs (J), and the number of trips arriving in Marcytown (Td) is also a function of the number of households and number of jobs.


To =1H+0.1J;R2 =0.9
\,\!


Td =0.1H+1J;R2 =0.5
\,\!

Assuming all trips originate in Rivertown and are destined for Marcytown and:

Rivertown: 30000 H, 5000 J

Marcytown: 6000 H, 29000 J

Determine the number of trips originating in Rivertown and the number destined for Marcytown according to the model.

Which number of origins or destinations is more accurate? Why?

Example
Solution:

Determine the number of trips originating in Rivertown and the number destined for Marcytown according to the model.

To−Rivertown = 1(30000) + 0.1(5000) = 30500 trips

Td−Marcytown = 0.1(6000) + 1(29000) = 29600 trips

Which number of origins or destinations is more accurate? Why?

Origins because of the goodness of fit measure of the Statistical model.