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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. "4) The Rulebook." 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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Page
40
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Page
40
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)

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40 Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide Safety, Part 217 Railroad Operating Rules, Part 218 Railroad Operating Practices, Part 225 Rail- road Accident and Incident Reporting. 3) Rules and Procedures--Practical Considerations Both freight and passenger operator must be under the authority of the same control center, preferably managed by the passenger operator. The control center must be able to communicate with train crews, MOW crews, supervisors, and maintenance of equipment (MOE) personnel and vice versa. In the case of shared-track operations, freight crews and other personnel must be able to communicate with the passenger control center and be trained and conversant in their R&P. In a shared-track environment, the day-to-day operation encompasses the four likely scenarios over a typical service day or during special operations. A. Shared-track operation of light passenger rail cars movements commingled on the same track where freight movements occur; B. Parallel movements involving light passenger rail cars on one track and a freight train on an adjacent track; C. Exclusive use by either the light passenger rail cars or the freight equipment; D. Transitional periods when passenger service is starting or ending, in conjunction with freight period ending or starting. Different rules and procedures for freight and passenger operations when combined for freight and passenger traffic in a commingled operation must accommodate those four scenarios as well as some unique to each mode: · Freight operations. Train control system, communication protocols, speed, train length, cargo, drill operations, train inspections, shifted loads, fouling of main tracks, close clearances, and accident/incident response; and · Passenger operations. Train control system, communication protocols, pre-departure safety inspections, schedule, speed, changing ends, terminal activities, passenger conduct and rela- tions, station stopping, movements at grade crossings, hazardous condition alerts and accident/ incident response. In most cases rule books are issued to employees, who receive training, and then are responsi- ble to learn the rules, keep up-to-date with changes, and have the books on or near their person at all times while working. To contribute to safety, R&P also serve these purposes. · Governance: Specify the duties of operating and maintenance employees and direct their actions in any situation that may arise while they are operating trains or controlling or affected by train movements. · Regulatory conformance: Fulfill regulatory requirements. · Acknowledge limitations: Recognize the limitations of technology and human capabilities and behavior, and compensate for these shortcomings. · Supplement train control systems: They are designed to address circumstances not accommo- dated in the train control system and failures of technology, and to provide safe work arounds for most eventualities. 4) The Rulebook The ideal system of R&P will provide movement authority for all foreseeable situations. Rail- road-based rules and procedures are preferred as the nucleus, for a rulebook that provides: · Sufficient and appropriate content for the nature of the operation; · Adequate management resources to staff, train, and monitor application and enforcement of R&P;