Evaluating Alternative Operations Strategies to Improve Travel Time Reliability (2013) / Chapter Skim
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10 The SHRP 2 Reliability Project L11, Evaluating Alternative Operations Strategies to Improve Travel Time Reliability, recognizes the imperative to maximize the value and capabilities of our existing transportation infrastructure; and it aims to do so in the context of a collaborative decision-making process that allows agencies and jurisdictions to make prudent decisions for investing scarce resources. The objectives of Project L11 are to identify and evaluate strategies and tactics to satisfy the travel time reliability requirements of users of the roadway network -- those engaged in freight and person transport in urban and rural areas.
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11 3. Weather (18%)
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12 Further, the intent of the above classification scheme is to facilitate the analysis of the travel time reliability problem in terms of (a) measures of reliability, (b)
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13 With these more-general definitions, 2 *
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14 from online mapping utilities (such as MapQuest) and Global Positioning System devices.
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15 operations, their work environment, and the level of flexibility provided to them by shippers. This research effort has shown that shippers are relatively insensitive to the problem of reliability and provide carriers with little flexibility.
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16 Table 1.4. Actions and Consequences of Unreliability for Passenger Travelers Trip Purpose Importance of Reliability Actions to Deal with Unreliability Consequences of Unreliability Appointments (e.g., medical, personal services)
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17 time periods. For example, the 95th percentile travel time can be computed for an entire peak period or for each specific hour within that peak period.
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