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33 suggests that the measures are the same or similar to ones that improvements, selecting the best option to improve net- have been used, but in many cases new or improved data or work mobility, and finding efficiencies through partner- tools are needed to be able to capture the performance of the ships and data sharing. network. Examples of data and tools include the following: One basic question of this project is, "Are there network per- formance measures?" Network performance measurement For the regional scenarios, a combination of scenario plan- is unique not in the process or measures used but in the part- ning and tackling new issues requires sketch models or nerships and collaboration required. Working across agen- other tools that can capture the long-range benefits of issues cies to establish common goals and developing methods for such as reliability, pricing strategies, and land use strategies; measuring those goals is inherently challenging. A range of For the multistate scenario, an economic analysis model approaches may be appropriate, depending on the specific helped the states compare strategies across state boundaries; agencies involved and their relationship to one another (i.e., For the megaregional scenario, significant work was needed peer institutions and existing agreements on cooperation). to bind together several independent travel demand mod- As such, this research project was organized around a com- els used by the individual MPOs that made up the partner- mon framework and a set of partnership scenarios. ship; and As regions expand past the traditional MPO boundaries and For the intraregional scenario, data and tools were generally travel and economies become interdependent through the already available, but individual DOT departments were not formation of megaregions, the importance of network-level necessarily aware of what other departments were using. performance measurement will increase. More agencies will Integrating data across departments requires understanding find these tools and processes critical for addressing the the specific needs and data quality requirements, as well as transportation challenges they face. developing methods to access data for multiple purposes. As agencies continue to engage in network-level perfor- mance measurement, the processes and practices will become more standardized and transferable. Summary Performance measures have been widely accepted as valu- This research project began with a question about measur- able tools for use by transportation agencies as they look to ing performance at a network level. Though clear technical increase accountability, make strategic investments, and fully challenges are noted throughout the final report and guide- understand the implications and impacts of programs and book, it quickly became clear through the research that a policies. This research effort looked at how those practices have deeper understanding of the partnerships necessary to consider been applied to network-level situations, across modes and network performance was required. Several partnership mod- jurisdictions, and the associated benefits and challenges. Con- els are described here, but future research should take these clusions from this effort include the following: models further; develop an understanding of the institutional, legal, and other challenges; and develop recommendations to Measuring network performance offers benefits that help agencies apply these partnerships in the future, especially include understanding the implications of programs and for the multistate and megaregional partnerships.