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12 Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide
Chapter 2--Shared-Track: Laying the Foundation--Policy and Strategy
Policy and strategy. This section explains the policy and strategic underpinnings of a
shared-track operation. It discusses the broader institutional aspects including the busi-
ness model, the outline of a business case and the safety case. It reviews the FRA Waiver
process, the role of State Safety Oversight, and the contribution of Risk Analysis to the
safety case.
Chapter 3--Enabling Shared-Track: Technology, Command, and Control
Technical elements. This is a straightforward summary of train control technology, commu-
nications, Rules and Procedures and current and new vehicle designs, and how each con-
tributes to a viable shared-track operation. It notes the influence of each on safety and the
practical application and integration with both the passenger and freight operation. The influ-
ence of technology on the safety case is described.
Chapter 4--Shared-Track: A Handbook of Examples and Applications
Practitioner's guide to shared-track. This section serves as the practical manual. It is an
account of North American shared-track operations and progress to date. A business case
template illustrating the use and interpretation of business case data (sample worksheets are
included) follows next. The guide contains a risk analysis template and an explanation of how
the results impact the business case and ultimately project viability. Incremental steps to move
beyond "rigid temporal separation" are reported as evidence of evolutionary progress in
shared-track operations. Finally, concrete guidelines are suggested to help project planners
develop a shared-track operation with a freight railroad.
Chapter 5--Shared Use: Progress and Evolution
Future directions for the shared-track service concept. What realistic approaches can be
employed to increase the interest and potential of shared-track systems? Candidates and
appropriate conditions are recommended for a demonstration project. The advantages and
disadvantages, and their effect on the potential market are reviewed. This segment points out
barriers and impediments to broader application and acceptance of this mode of operations.
Finally it suggests area or research and efforts likely to enhance the practical appeal of this
operational concept.
Bibliography
Appendices
1) Abbreviations
2) Glossary
3) TCRP A-27 Research Task Descriptions
4) Relative Cost Comparison of Train Control Systems
5) Sample Operating Rulebook Table of Contents
6) Vehicle Cost Drivers
7) Some Examples of Current Vehicle Production LRV and MU Vehicle Types
8) Shared-Track System Status
9) Shared-Track Configuration and Operational Alternatives
Research Effort
Scope of Work for Project A-27
TCRP issued its Research Project Statement for Project A-27, "Shared Use of Railroad Infra-
structure with Non-FRA-Compliant Public Transit Rail Vehicles" on March 29, 2005. Thirteen
tasks broken into two phases (summarized previously and shown in the Appendix) constituted
the scope of work and defined the research effort. The principal aim of the investigation, reiter-
ated here, is taken from the Project Statement.
