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  • IITTSS IINNVVEESSTTMMEENNTT CCOOSSTT--BBEENNEEFFIITT AANNAALLYYSSIISS

    AANNAALLYYSSIISS OOFF TTAAMMPPAA BBAAYY IINNTTEERRSSTTAATTEESS

    HHIILLLLSSBBOORROOUUGGHH // PPIINNEELLLLAASS CCOOUUNNTTIIEESS FFIINNAALL RREEPPOORRTT

  • ITS Investment Cost-Benefit Analysis

    ANALYSIS OF TAMPA BAY INTERSTATES

    Final Report October 2005

    Prepared by:

    Center for Urban Transportation Research College of Engineering

    University of South Florida 4202 E. Fowler Avenue, CUT100

    Tampa, Florida 33620 (813) 974-3120

    Research Team:

    Shireen Chada Senior Research Associate

    Cuthbert Gibson

    Graduate Research Assistant

    Design and Layout:

    Patricia Baptiste Program Assistant

    The opinions, findings, and recommendations expressed in this report are those of the Center for Urban Transportation Research (CUTR) and the University of South Florida (USF) and not necessarily those of the Florida Department of Transportation (FDOT). This report has been prepared in cooperation with FDOT.

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    TABLE OF CONTENTS

    1.0 INTRODUCTION .....................................................................................................................................6

    1.1. BACKGROUND ...................................................................................................................................6 1.2. PROBLEM STATEMENT.......................................................................................................................6 1.3. STUDY AREA .....................................................................................................................................7 1.4. STRUCTURE OF THIS REPORT .............................................................................................................7

    2.0 GENERAL CONCEPTS OF IDAS..........................................................................................................9

    2.1. SCOPE OF IDAS ANALYSIS ................................................................................................................9 Overview of IDAS .....................................................................................................................9 IDAS Evaluation Procedure.....................................................................................................11

    2.2. KEY TERMS USED IN THE IDAS ANALYSIS PROCESS........................................................................14 IDAS Analysis Hierarchy ........................................................................................................14 IDAS Deployment Hierarchy...................................................................................................14 Other Key Definitions..............................................................................................................17

    2.3. IDAS MODULES OR ANALYSIS PROCEDURES ..................................................................................18 Input/Out Interface Module .....................................................................................................18 Description of Input Variables.................................................................................................20

    2.4. ALTERNATIVE GENERATOR MODULE ..............................................................................................23 2.5. IDAS COST MODULE.......................................................................................................................24 2.6. BENEFITS MODULE DATA TYPES.....................................................................................................26

    Travel Time/Throughput Sub-module .....................................................................................26 Environment Sub-module ........................................................................................................27 Safety Sub-module...................................................................................................................27 Travel Time Reliability Sub-module .......................................................................................27

    2.7. ITS ALTERNATIVES COMPARISON ...................................................................................................28 Inputs Specified by the User ....................................................................................................28 Inputs from Other IDAS Modules ...........................................................................................29 Outputs.....................................................................................................................................29

    3.0 ITS COSTS-BENEFITS ANALYSIS FOR TAMPA BAY ..................................................................30

    3.1. SCOPE OF IDAS ANALYSIS FOR TAMPA BAY...................................................................................30 3.2. ANALYSIS PROCESS .........................................................................................................................35

    Data Gathering.........................................................................................................................35 Control Alternative ..................................................................................................................35 Phase Schedules or ITS Improvement Details .........................................................................36 ITS Project Alternatives...........................................................................................................37 Incident Management Systems ................................................................................................42 Regional Multimodal Traveler Information Systems...............................................................42

    3.3. PROJECT COST DATA.......................................................................................................................43 Default Cost Data.....................................................................................................................43 User Defined Cost Data ...........................................................................................................44

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    3.4. MODELING THE BENEFITS................................................................................................................46 3.5. ITS ALTERNATIVE COMPARISON.....................................................................................................47

    4.0 RESULTS, SENSITIVITY ANALYSIS AND CONCLUSIONS.........................................................49

    Benefit-Cost Ratio ...................................................................................................................49 Project Cost..............................................................................................................................49 Project Benefits........................................................................................................................51 Performance Measures and Market Sectors.............................................................................51 Sensitivity of IDAS Parameters ...............................................................................................54 ITS Components Sensitivity in the Alternative Generator Module .........................................54 Parameter Sensitivity in the Alternative Comparison Module.................................................59 Value of Time ..........................................................................................................................59 Fuel Costs ................................................................................................................................59 Safety Costs .............................................................................................................................60

    5.0 TCSP EVALUATION .............................................................................................................................62

    5.1. PROJECT DESCRIPTION.....................................................................................................................62 Goals ........................................................................................................................................62 Hypothesis ...............................................................................................................................62 Estimated Project Budget.........................................................................................................62

    5.2. PROJECT EVALUATION PLAN............................................................................................................62 Process Evaluation...................................................................................................................63 Product Evaluation...................................................................................................................65 Outcome Evaluation ................................................................................................................66

    6.0 CONCLUSIONS AND RECOMMENDATIONS.................................................................................67

    Evaluation of IDAS as an Effective Tool ................................................................................67 Evaluation of Projects Modeled..........................................................................