Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Florida (2014) / Chapter Skim
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Pages 23-35
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23 CHAPTER 1 Introduction 1.1 Background Transportation agencies have realized the importance of performance estimation, measurement, reporting, and management. This realization has become even greater with the signing of the Moving Ahead for Progress in the 21st Century Act (MAP-21)
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24 program, tools have been developed to assess reliability based on a variety of approaches, such as sketch planning, analytical analysis, simulation analysis, and travel time monitoring. SHRP 2 initiated the L38 project to pilot test products from five of the program's completed projects.
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25 analysis tool (described in Section 1.3) that already have many of the L02-recommended data manager functions, this part of the L02 project was not used in this study.
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27 1.2.2 L07 Project: Identification and Evaluation of the Cost-Effectiveness of Highway Design Features to Reduce Nonrecurrent Congestion The L07 project addressed the estimation of the effects on freeway travel time reliability of physical design treatments and the cost-effectiveness of these treatments. The L07 project produced a guide and a sketch planning–level spreadsheet that can be used in this estimation.
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28 The sketch-planning analysis tool is designed to analyze the effects on reliability of some of the highway geometric design treatments presented in Table 1.1. The tool was developed using a Visual-Basic-for-Application interface within an Excel spreadsheet.
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29 1.2.3 L08 Project: Incorporation of Travel Time Reliability into the Highway Capacity Manual The L08 project developed procedures to include travel time reliability in the Highway Capacity Manual (HCM)
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30 L05 project to illustrate the implementation and validation of the guidance and techniques identified in the project. The L05 products described above are useful to any reliability assessment effort, and components of them were used as needed in the project, particularly in developing the evaluation and implementation plan discussed in the next section.
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31 simulation development and calibration, and allow the visualization of data. The tool supports the extraction and grouping of data based on different criteria for use in the analysis, including user-specified criteria or similarity in traffic patterns, by using clustering analysis.
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32 Miami-Dade corridors used in the use cases of this project. Figure 1.5 shows a user interface screen of the original version of IRISDS.
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33 Figure 1.6. Upgraded ITSDCAP user interface.
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34 1.5 Project Activities and Document Organization At the start of the project, an evaluation and implementation plan was developed describing how the products from the four SHRP 2 projects (L02, L05, L07, and L08) would be used in the L38C project to support business processes associated with transportation agency planning and operations activities with a focus on the Florida DOT TSM&O program activities and transportation management center (TMC)
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35 environments, and it also allows assessing the impacts of improvement alternatives not currently implemented. The results from these tools were tested and compared with the analysis results obtained based on real-world monitoring systems and private-sector data.
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