Risk-Informed Investment for Tropical Cyclone Preparedness of Highway Signs, Signals, and Lights

AbstractTransportation corridors at regional and national scales are vulnerable to region-wide natural disasters resulting from tropical cyclones, including tropical storms and hurricanes. In addition to floods and debris causing the corridors to be impassable, the widespread damage to signs, lights, and signals brings severe safety concerns to the system users. Agencies must prepare for tropical cyclone-related needs and anticipate various storm scenarios in order to prioritize their investment for upgrading existing equipment. This paper develops a method to consider investment alternatives for highway equipment (i.e., signs, signals, and lights) through the evaluation of trade-offs between cost and damage. First, the authors develop a model for determining wind damage to vulnerable equipment. Second, they characterize the types of highway equipment and associated costs. Third, they evaluate trade-offs among upfront equipment upgrade costs and potential wind damage to equipment in reference to particula...

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