Identifying and Using Low-Cost and Quickly Implementable Ways to Address Freight-System Mobility Constraints (2010) / Chapter Skim
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Pages 9-17
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. Freight mobility constraints can be caused by physical, operational, or regulatory factors.
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Re-striping the merge/diverge areas to better serve demand 3. Reducing lane widths to add a travel and/or auxiliary lane 4.
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The Government Accountability Office (GAO)
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Actions implemented at the intersections included the following: Implementation of all-red intervals Replacement of 8-inch signal heads with 12-inch signal heads Relocation of signal heads to improve visibility by realigning two signal heads facing each other, realigning the signal heads over each lane of travel, or mounting the signal heads using box span installations Installation of secondary post-mounted signal heads to improve visibility at some locations Installation of back plates on traffic signals to improve visibility at some locations Installation of left-turn lanes through re-striping of approach lanes and exclusive left-turn phases, where needed Removal of on-street parking. 2.2.6 Low-Cost Regulatory/Public Policy Improvements One approach to improve freight mobility with a low-cost focus involves changes in regulation.
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Freight shippers and carriers are especially concerned about the future capacity and productivity of the freight system. In addition to the growing demand for freight transportation, increasing congestion on the highway system could cause some freight to be diverted to rail.
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. The following are some rail freight mobility constraints identified in the literature.
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Le-Griffin and Murphy (36) noted that as the demand for international trade and global logistic services continues to increase, port capacity can be expanded by improving productivity and operational efficiency of terminal facilities.
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– Reduce container dwell time. 2.4.6 Examples of Low-Cost Improvements Most low-cost improvements to address freight mobility constraints encountered at the deepwater ports and on the inland waterway system are typically economic-incentive–based pro16
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All 12 international container terminals in the two ports established five new shifts per week (Monday–Thursday: 6 PM to 3 AM and Saturday: 8 AM to 6 PM)
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