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CHAPTER 1
Project Rationale and Approach
Background
The CAPTA effort is a continuation of efforts begun following the attacks of September 11,
2001. That event prompted a series of risk assessment and management projects initiated
through the cooperative research programs managed by the Transportation Research Board
of the National Academies. Several risk management guides were prepared independently
and were aimed at either state transportation agencies that own or operate specific assets, or at
specific asset classes within the transportation system. They included guides to assess risk and
vulnerability for highway assets, ferries, tunnels, and bridges. These asset-specific guides pro-
vide valuable, current information to owners and operators. This multimodal guide builds upon
these prior mode-specific efforts.
Much of the transportation-focused risk assessment and risk management guidance avail-
able today is asset or threat specific. These approaches to risk management have the following
characteristics:
· The analysis focuses on a specific asset or a select group of assets.
· The approaches assume or require substantial knowledge of likely threat/hazard scenarios.
· The approaches consider many possible scenarios that might disrupt transportation assets.
These guides often require knowledge that the user may not possess or easily obtain and are
typically specific to one transportation mode or asset class, such as bridges or tunnels. They are
not designed to compare transportation assets across transportation modes, such as would
be the case with vehicle fleets and tunnels.
CAPTA, a strategic tool used to compare modes on an equitable basis for budgetary decisions,
expands the tools available to transportation agencies to define their needs and determine
an optimal distribution of funds. The CAPTA methodology provides a foundation for capital
requests based on objective, transparent, defensible data and analysis. These well-thought-out
requests made to a legislature or in response to a federal request for grant proposals will help
transportation agencies acquire additional funding on the merits of the argument for assets
that need resources. The CAPTA methodology helps manage internal resource allocation deci-
sions among multiple modes by providing a means for analyzing needs through an equitable and
transparent process that is applied consistently to all assets.
The CAPTA methodology is designed primarily to be applied by practitioners at the
state level. The spreadsheet through which CAPTA is implemented may be used separately,
apart from this document. Part I of this report provides an overview of why this product was
developed and the development process. The model is expected to be tested and improved
through use.
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