trans_sys_chap10

trans_sys_chap10 - Introduction to Transportation Systems 1...

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Introduction to Transportation Systems 1
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PART I: CONTEXT, CONCEPTS AND CHARACTERIZATION 2
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Chapter 10: Models and Frameworks 3
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Models and Frameworks: An Introduction ± Models are mathematical representations of a system. ± Frameworks are qualitative organizing principles for analyzing a system. ± We can use both models and frameworks to do analysis. 4
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What is our function as transportation professionals? ± Designing better transportation systems ± Using resources, financial and otherwise, effectively in a transportation context ± Operating transportation systems optimally ± Maintaining transportation systems efficiently 5
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Value-laden words: ± better ± effectively ± optimally ± efficiently These depend on your point of view. 6
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A Structure for Transportation System Analysis 7
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8 LOOP 1: Does the evaluation suggest other alternatives? LOOP 2: Are the measures of effectiveness appropriate? Figure 10.1 A Systems Analysis Framework: A First Look Search for alternatives in the real world Prediction of performance, flows, etc. Evaluation of alternatives Reconsider measures of effectiveness Selection among alternatives 2 1
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The Subtlety in Choosing Measures of Effectiveness Be sure your measures of effectiveness are good An Urban Area High Income Low Income Area Area Center City I II Figure 10.2 9
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A Systems Analysis Framework: A Second Look
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This note was uploaded on 12/06/2011 for the course ESD 1.221j taught by Professor Josephsussman during the Fall '04 term at MIT.

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trans_sys_chap10 - Introduction to Transportation Systems 1...

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