NCHRP Report 618: Cost-Effective Performance Measures for Travel Time Delay, Variation, and Reliability

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69 References 1. Lomax, T., S. Turner, G. Shunk, H. Levinson, R. Pratt, P. Bay, and istration, Office of Highway Information Management, Septem- G.B. Douglas. NCHRP Report 398: Quantifying Congestion, Volume ber 1990. 1, Final Report, and Volume 2, User's Guide. TRB, National Research 5. Highway Capacity Manual, TRB, National Research Council, Council, Washington, D.C., 1997. Washington, D.C., 2000. 2. The Keys to Estimating Mobility in Urban Areas: Applying Definitions 6. Monitoring Urban Freeways in 2003: Current Conditions and Trends and Measures That Everyone Understands. (second edition) Texas from Archived Operations Data. Report No. FHWA-HOP-05-018. Transportation Institute, Pooled Fund Urban Transportation Per- U.S. Department of Transportation, Federal Highway Administra- formance Measure Study, May 2005. http://mobility.tamu.edu/ tion, December 2004. http://mobility.tamu.edu/mmp/. ums/estimating_mobility/. 7. Dowling, R., W. Kittelson, J. Zegeer, and A. Skabardonis. NCHRP 3. Deen, T. B., and R. Pratt. Evaluating Rapid Transit. In Report 387: Planning Techniques for Estimating Speed and Service Public Transportation (second edition) (George E. Gray and Volumes for Planning Applications, TRB, National Research Lester A. Hoel, eds.), Prentice Hall, Englewood Cliffs, New Council, Washington, D.C., 1997. Jersey, 1991. 8. Currin, Thomas R. Introduction to Traffic Engineering � A Manual 4. Summary and Recommendations of the Workshop on National for Data Collection. Brooks/Cole Publishing Co., 2001. Urban Congestion Monitoring. Report No. FHWA-PL-90-029. 9. Roberts, H. Douglas (ed.). Manual of Traffic Engineering Studies, U.S. Department of Transportation, Federal Highway Admin- Institute of Transportation Engineers, 2000.

Table of Contents

Front Matter R1-R9

Summary 1-3

1.1 Why Measure Travel-Time Performance? 4-4

1.2 How to Use the Guidebook 5-5

1.4 Measuring Mobility and Reliability 6-9

2.2 Measure Selection 10-12

2.4 Individual Measures 13-16

2.5 Area Measures 17-17

2.6 Basic Data Elements 18-18

2.7 Definition and Discussion of Speed Terms 19-19

2.8 Other Data Elements 20-20

2.9 Time Periods for Analysis 21-21

2.11 The Right Measure for the Type of Analysis 22-22

2.12 Index Measure Considerations 23-24

3.3 Data Collection Sampling Plan 25-29

3.4 Collecting Data from TMCs 30-31

3.5 Processing/Quality Control 32-33

4.1 Introduction 34-34

4.4 Determining if Conditions Are Significantly Better 35-35

4.5 What to Do If the Null Hypothesis Cannot Be Rejected 36-36

5.4 Comparing Field Data to Performance Standards 37-38

5.6 Diagnosing the Causes 39-40

6.2 Estimating/Forecasting Travel Time 41-47

6.4 Estimating Reliability 48-50

7.2 Defining the Problem 51-51

7.3 Generation of Project Alternatives for Analysis 52-52

7.5 Evaluation of Alternatives 53-53

7.7 Evaluate Effectiveness of Implemented Solutions 54-54

8.4 Creating a Performance-Based Decision-Making Environment 55-58

8.6 Typical Planning Applications 59-68

References 69-69

Abbreviations used without definitions in TRB publications 70-70