Identifying and Using Low-Cost and Quickly Implementable Ways to Address Freight-System Mobility Constraints (2010) / Chapter Skim
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Appendix A - Methodology User Guide
Appendix A - Methodology User Guide
Pages 95-99
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From page 95... ...
; geometric restrictions or limitations affecting efficient mobility • Operational Constraints -- events or occurrences that constrain legal operating speeds; poor signal phasing; terminal switching inefficiency; restricted terminal gate operating hours; inadequate traveler information • Regulatory Constraints -- safety and security requirements; truck restrictions; land use controls that restrict facility expansion; air quality requirements; labor contractual limitations. Criteria for Low-Cost Improvements A low-cost improvement that can be implemented quickly is: An action that modifies existing geometry and/or operational features of the freight transportation system and that can be implemented within a short period of time without extended disruption to traffic flow.
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From page 96... ...
Mode Characteristics of Low-Cost Actions Quickly Implementable Highway • Less than $1 million • Spot or location-specific improvements • No environmental clearances necessary • No right-of-way acquisition • No special programming required • Implementation at district lowest operation unit level (limited direct HQ oversight) Less than 1 year Rail • Class I railroad – $1 million to $10 million Less than 2 years • Regional railroad – less than $2 million Less than 1 year • Short-line railroad – less than $500,000 Less than 6 months Deepwater Ports & Inland Waterways • Less than $1 million • Essentially incentive-based programs to influence demand and changes in operational practices, and technology deployments • Physical improvements coordinated with highway and rail projects within and outside the port terminals at links serving ports – location-specific actions • Uniqueness of each port acknowledged Less than 2 years E v a l u a t e I m p r o v e m e n t A c t i o n s A u x i l i a r y l a n e W i d e n l a n e R a m p m e t e r R e - s t r i p i n g U p g r a d e s i g n a l s E t c .
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From page 97... ...
The wizard approach allows the user to characterize the constraint under consideration and then select from a list of improvements that can be used to address that constraint based on experiences elsewhere. The query approach allows the user to search the database of projects based on userdefined criteria without having to navigate the entire program.
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From page 98... ...
The lower windows display the types of improvements (physical, operational, regulatory) and the corresponding list of improvement options aligned to the constraint selected on the previous screen.
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From page 99... ...
Moving the cursor over the project number in the middle window displays the description of the project as shown in Figure A-8. The lower window on this screen displays the hierarchy of selections made on the previous screens that led to the applicable projects.
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Key Terms
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