TCRP Report 130: Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide

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Table of Contents
Front Matter R1-R12
Research Objective 1-1
Report Output 2-2
Business Case 3-4
Train Control Technology 5-5
Grade Crossing Hazards 6-6
Requirements for Concurrent Shared-Track Operations 7-7
Practical Shortcuts 8-8
Advancing the Shared-Track Concept 9-9
Introduction 10-10
Reader's Guide to the Final Report 11-11
Scope of Work for Project A-27 12-12
Research Approach 13-13
Characteristics of a Shared-Track Corridor 14-14
Freight Operations Perspective 15-16
Why Share Track? 17-17
The Business Model 18-18
Business Model Structure 19-19
The Business Case 20-20
Shared-Track - A Practical Business Case Structure 21-22
Role of the Designated State Safety Organization 23-23
Methods for Risk Analyses 24-24
Equal Risks, Equivalent Safety 25-25
Underpinning the Case for Shared-Track 26-26
The Role of Command and Control Systems in Shared-Track 27-27
1) Train Control System Functions 28-28
2) Train Control System Design Parameters 29-29
4) Train Control - Emerging Technology - PTC and CBTC 30-30
System and Integration Testing - Vendor Role 31-31
8) Issues Unique to Train Control for Shared-Track 32-32
Auxiliary Safety Critical Systems 33-33
9) Fail-Safe Train Separation 34-35
2) Regulatory and Practical Requirements 36-37
4) Functional Design of a Communications System 38-38
2) Regulatory Mandates 39-39
4) The Rulebook 40-40
5) Rules and Procedures for Shared-Track 41-41
Background 42-42
2) Diesel Multiple Units and Electrical Multiple Units 43-43
2) Crash Energy Management (CEM) 44-44
3) Propulsion System 45-45
5) Other Considerations 46-46
Vehicles for Shared-Track Applications 47-47
3) Standardization 48-48
Applying Technology to Shared-Track Operations - A Brief Guide 49-50
Shared-Track Operations - The North American Experience 51-51
2) Former Private Freight Railroad Owner Becomes a Privileged Tenant 52-52
4) Pressure to Commingle Is Heaviest on Lines with Higher Freight Densities* - A Review of Different Solutions 53-53
6) Transit Operators Choosing to Avoid Commingling Sacrificed Service Quality and Efficiency 54-54
Business Case Template 55-55
Alternatives Analysis 56-56
Reasons to Consider Noncompliant Equipment 57-57
Service Characteristics to Justify the Choice of a Light Rail System 58-58
Structures Considerations 59-59
Cost and Ridership Analyses 60-60
Cost Analysis for Signal System Alternatives 61-62
System Capital Cost Assessment 63-63
System Operating Cost Assessment 64-65
Alternatives Evaluation 66-66
Introduction 67-67
Risk Analysis and Modeling Methodology 68-70
Results and Risk Analysis Findings 71-72
Safety Case Findings 73-73
San Diego Trolley 74-74
Achievable Incremental Steps 75-75
Practical Shortcuts For Shared-Track 76-76
Demonstration Project 77-77
Application of Risk Analyses Methodology to the Demonstration Project 78-78
Data Collection Plan 79-79
San Diego Trolley, Inc. 80-80
Barriers to Implementation 81-81
Shared Track - The Potential Market 82-82
Shared-Track Operation - An Evolving Concept 83-84
Bibliography 85-86
Appendix 1 - Abbreviations 87-87
Appendix 2 - Glossary of Shared-Track Definitions 88-92
Appendix 3 - TCRP A-27 Research Task Descriptions 93-97
Appendix 4 - Relative Cost Comparison of Train Control Systems 98-99
Appendix 5 - Sample Operating Rulebook Table of Contents 100-100
Appendix 6 - Vehicle Cost Drivers 101-101
Appendix 7 - Some Examples of Current Production LRV and MU Vehicle Types 102-105
Appendix 8 - Shared-Track System Status 106-106
Appendix 9 - Shared-Track Configuration and Operational Alternatives 107-109
Abbreviations used without definitions in TRB publications 110-110

Table of Contents

Front Matter R1-R12

Research Objective 1-1

Report Output 2-2

Business Case 3-4

Train Control Technology 5-5

Grade Crossing Hazards 6-6

Requirements for Concurrent Shared-Track Operations 7-7

Practical Shortcuts 8-8

Advancing the Shared-Track Concept 9-9

Introduction 10-10

Reader's Guide to the Final Report 11-11

Scope of Work for Project A-27 12-12

Research Approach 13-13

Characteristics of a Shared-Track Corridor 14-14

Freight Operations Perspective 15-16

Why Share Track? 17-17

The Business Model 18-18

Business Model Structure 19-19

The Business Case 20-20

Shared-Track - A Practical Business Case Structure 21-22

Role of the Designated State Safety Organization 23-23

Methods for Risk Analyses 24-24

Equal Risks, Equivalent Safety 25-25

Underpinning the Case for Shared-Track 26-26

The Role of Command and Control Systems in Shared-Track 27-27

1) Train Control System Functions 28-28

2) Train Control System Design Parameters 29-29

4) Train Control - Emerging Technology - PTC and CBTC 30-30

System and Integration Testing - Vendor Role 31-31

8) Issues Unique to Train Control for Shared-Track 32-32

Auxiliary Safety Critical Systems 33-33

9) Fail-Safe Train Separation 34-35

2) Regulatory and Practical Requirements 36-37

4) Functional Design of a Communications System 38-38

2) Regulatory Mandates 39-39

4) The Rulebook 40-40

5) Rules and Procedures for Shared-Track 41-41

Background 42-42

2) Diesel Multiple Units and Electrical Multiple Units 43-43

2) Crash Energy Management (CEM) 44-44

3) Propulsion System 45-45

5) Other Considerations 46-46

Vehicles for Shared-Track Applications 47-47

3) Standardization 48-48

Applying Technology to Shared-Track Operations - A Brief Guide 49-50

Shared-Track Operations - The North American Experience 51-51

2) Former Private Freight Railroad Owner Becomes a Privileged Tenant 52-52

4) Pressure to Commingle Is Heaviest on Lines with Higher Freight Densities* - A Review of Different Solutions 53-53

6) Transit Operators Choosing to Avoid Commingling Sacrificed Service Quality and Efficiency 54-54

Business Case Template 55-55

Alternatives Analysis 56-56

Reasons to Consider Noncompliant Equipment 57-57

Service Characteristics to Justify the Choice of a Light Rail System 58-58

Structures Considerations 59-59

Cost and Ridership Analyses 60-60

Cost Analysis for Signal System Alternatives 61-62

System Capital Cost Assessment 63-63

System Operating Cost Assessment 64-65

Alternatives Evaluation 66-66

Introduction 67-67

Risk Analysis and Modeling Methodology 68-70

Results and Risk Analysis Findings 71-72

Safety Case Findings 73-73

San Diego Trolley 74-74

Achievable Incremental Steps 75-75

Practical Shortcuts For Shared-Track 76-76

Demonstration Project 77-77

Application of Risk Analyses Methodology to the Demonstration Project 78-78

Data Collection Plan 79-79

San Diego Trolley, Inc. 80-80

Barriers to Implementation 81-81

Shared Track - The Potential Market 82-82

Shared-Track Operation - An Evolving Concept 83-84

Bibliography 85-86

Appendix 1 - Abbreviations 87-87

Appendix 2 - Glossary of Shared-Track Definitions 88-92

Appendix 3 - TCRP A-27 Research Task Descriptions 93-97

Appendix 4 - Relative Cost Comparison of Train Control Systems 98-99

Appendix 5 - Sample Operating Rulebook Table of Contents 100-100