Evaluating Alternative Operations Strategies to Improve Travel Time Reliability (2013) / Chapter Skim
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1The objective of this project is to identify and evaluate strategies and tactics intended to satisfy the travel time reliability requirements of users of the roadway network -- those engaged in freight and person transportation in urban and rural areas. This report presents a set of options related to technological changes, operational solutions, and organizational actions that have the potential to improve travel time reliability both now and in the future (by the year 2030)
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2The second category includes actions to increase roadway capacity, such as the following: • Expansions of or additions to highway facilities; • Application of better operational and technical systems to maximize the performance of existing infrastructure; • Advances in technology and procedures that more quickly restore capacity that has been lost as a result of disruptions (incidents, weather conditions, work zones) ; and • Optimal use of existing transportation system capacity controlled by other transportation agencies, firms, or individuals.
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3 Balancing travel demand and transportation supply would require changes in the following areas: • Cooperation among all agencies that provide transportation supply to integrate the multimodal transportation services they support to maximize available (useful) capacity.
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4those technical improvements themselves depend on institutional and attitudinal changes that drive both how our transportation system is operated and how customers (travelers, shippers, carriers) make their travel decisions.
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5 • Select performance measures and the ways that those performance measures are applied to ensure that agencies and jurisdictions are accountable for their actions. • Participate in more-comprehensive demand management programs (see interagency cooperation below)
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6Public agencies could consider the following five actions in the near term to foster interagency and intermodal relationships: • Change the agency "culture" so that agencies work together (and perhaps even coalesce) to achieve better system performance, rather than working toward only agency-specific goals.
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7 • Ensure that data collected from new systems can be and are widely shared by establishing common architectures and open data-sharing agreements. • Actively look for partners, particularly in the private sector, who can provide data that are already collected, which can be useful for improving the demand–capacity balance.
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8• Reliance on roadside signs for driver information; • Weather detection and response systems; • Data from vehicle traces (e.g., using the Global Positioning System to track trucks and containers) ; • Data sharing; and • Predictive models for real-time systems operation.
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9 can be provided to travelers so that they can make informed choices about the best travel option, given their own values of time and reliability. That same information can be used to determine where best to spend limited resources on capacity expansion and to judge performance of the operational actions and infrastructure improvements that are selected and implemented.
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