Prioritization Procedure for Proposed Road–Rail Grade Separation Projects Along Specific Rail Corridors (2019) / Chapter Skim
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5 Overview of Current Railroad–Highway Grade Crossing Separation Evaluation 2.1 USDOT Railroad–Highway Grade Crossing Handbook The traditional approach for making grade crossing investment decisions in the United States has been guided by the 2nd revised edition of the Railroad–Highway Grade Crossing Handbook of the Federal Highway Administration (FHWA)
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6 Case A Highway–rail grade crossings should be considered for separation or eliminated whenever one or more of the following exist: Case B
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7 approach may also use enhanced public involvement to engage the community in the decision-making process. Considering multiple closures during a corridor-based crossing consolidation may also reduce the administrative burden on the involved parties by allowing a single review for multiple locations (FRA 2009)
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8 Techniques and Models Applied to Grade Separation Decisions Many evaluation techniques that have been applied to grade crossing decisions were identified during the literature review. While researchers, state agencies, and other government organizations often use similar factors, a variety of techniques are used for analyzing and prioritizing those factors when investments in grade separations are being made.
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9 location was considered as a bonus criterion contributing an additional 5% to the overall score (InfraConsult 2012)
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10 profitability of a project from the whole community point of view by quantifying the willingness-to-pay or the willingnessto-accept" (Aoun, El Koursi, and Lemaire 2010)
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11 3. What are the impacts to the rail network and the train operations due to a grade separation?
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12 USDOT partnered with eight large metropolitan transportation agencies (Pioneer Sites) to apply a systems engineering approach to determine the needs for ICM in key corridors.
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13 Survey Summary of At-Grade Crossing Decision Factors and Data Sources • Thirty-eight percent of respondents provided information relating to the various factors or resources that they had previously used to evaluate railroad grade separation projects. Factors were grouped into 12 categories and ranked by frequency of response.
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14 separations, respondents said cost–benefit information and collision data were the most useful. The hierarchy for use of the remaining data cited is shown in Figure 2-5.
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15 making. Of the given criteria, the emergency evacuation routes and consideration of the transient population rated lowest.
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16 When given an open opportunity to provide additional topics for this research effort, 33 percent of respondents discussed the lack of a dedicated funding program or source and cited needs greater than can be met with existing programs. Additionally, a respondent discussed a desire to explore the efficacy of traffic queue cutter loops in urban areas with signal preemption to prevent traffic from backing up onto the railroad tracks.
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