Assessing and Comparing Environmental Performance of Major Transit Investments (2012) / Chapter Skim
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48 . 3.0 Screening, Testing, and Evaluation Process 3.1 Environmental Performance Categories and Dimensions Performance Categories To develop a list of metrics, the project team first established four major categories of environmental performance: 1.
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49 Performance Dimensions Various dimensions of performance also are identified. These include impacts related to: • Direct effects of vehicle operations (changes in transit and highway vehicle travel)
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50 . 3.2 Development and Screening of Candidate Metrics In Phase 1, a list of over 120 candidate metrics or variations on metrics was developed.
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51 The evaluation was performed by the project team with consultation and review by the TCRP Project Panel. The process of identifying and screening metrics in Phase 1 began in January 2010 and was completed in September 2010.
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52 . Table 3.3 Pilot Project Characteristics Project Mode Area Type/ Context Approximate Length (Route-Miles)
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