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TCRP Report 130: Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide (2009)
Transit Cooperative Research Program (TCRP)

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Transportation Research Board. "Shared-Track - A Practical Business Case Structure." TCRP Report 130: Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide. Washington, DC: The National Academies Press, 2009.

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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)