The National Academies Press

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From page 15... ... 15 This chapter provides a range of resilience definitions from sectors outside as well as within transportation and analyzes the similarities and differences of these definitions. Next, a review of the variety of metrics being applied to assess resilience is discussed. Read the entire page →
From page 16... ... 16 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration Resilience is defined by ASME as "the ability to function through an attack or natural event or the speed by which an asset can return to virtually full function" (ASME Innovative Technologies Institute, 2009) Read the entire page →
From page 17... ... Resilience Definitions, Metrics, and Frameworks 17 events (before, during, post) and addresses more of the goal areas as outlined in Table 1, including maintaining functionality, recovery of functionality, and inhibiting change of state. Read the entire page →
From page 18... ... 18 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration According to Heaslip et al. Read the entire page →
From page 19... ... Resilience Definitions, Metrics, and Frameworks 19 programs as a way to help identify resilient practices and policies that address a broader range of activities that can be implemented to provide more than quick recovery post event to transportation assets. An outstanding issue as related to resilience analysis in highways is defining the relationship between resilience and risk. Read the entire page →
From page 20... ... 20 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration outcome resulting from an event or occurrence, as determined by its likelihood and the associated consequence" (U.S. Read the entire page →
From page 21... ... Resilience Definitions, Metrics, and Frameworks 21 This evolution of the relationship between risk and resilience has been seen through various federal reports and directives since 2006. As noted in the 2010 National Security Strategy, encouraging incentives to design structures and systems that can withstand threats, incorporating redundancy and decentralizing critical operations to reduce vulnerability, developing and practicing emergency response plans, and investing in infrastructure to maintain condition and performance are critical to improve resilience and reduce potential losses from applicable threats. Read the entire page →
From page 22... ... 22 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration However, as noted by Jackson (2008) , addressing inherent risks can result in the layering of measures for each identified, relevant threat, which often is not sustainable, whereas focusing on resilience and reducing the consequences should a threat come to fruition, may offer more methods to reduce risk. Read the entire page →
From page 23... ... Resilience Definitions, Metrics, and Frameworks 23 board. Hughes and Healy (2014) Read the entire page →
From page 24... ... 24 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration of the resilience indicators before and after an event. The MOR can be calculated for each of the resilience indicators using the following equation: ( ) Read the entire page →
From page 25... ... Resilience Definitions, Metrics, and Frameworks 25 resilience by focusing in on three key areas: transit bridge infrastructure resiliency, public transit system resiliency, and efficiency of transit systems with a focus on disability paratransit service. The study used structural health monitoring, finite element analysis, and remote sensing to establish resilience metrics for transit bridge infrastructure. Read the entire page →
From page 26... ... 26 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration NIAC differentiates between approaches related to people and processes, and the structure of infrastructure and assets (National Infrastructure Advisory Council, 2010) Read the entire page →
From page 27... ... Resilience Definitions, Metrics, and Frameworks 27 threats. For example, to ensure continuity of service, agencies must study their system as a whole and identify high priority origin–destination pairs to ensure service on critical segments of the system to allow for flow of essential traffic, freight movement, and defense movement, if applicable. Read the entire page →
From page 28... ... 28 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration ASME (2009) published a framework for the assessment of critical infrastructure, RAMCAP, which is applicable to 16 critical infrastructures, including transportation. Read the entire page →
From page 29... ... Resilience Definitions, Metrics, and Frameworks 29 Figure 6. FHWA Framework for Vulnerability Assessment (FHWA, 2012a) Read the entire page →

From page 15...

... 15 This chapter provides a range of resilience definitions from sectors outside as well as within transportation and analyzes the similarities and differences of these definitions. Next, a review of the variety of metrics being applied to assess resilience is discussed.