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Type of Report and Period Covered Sponsoring Agency Code Supplementary Notes AbstractThe decision of how best to allocate land around transit stations is a debated topic, with transit officials often opting for park-and-ride lots over active uses such as multifamily housing, office, and retail organized into transit-oriented developments (TODs). In practice, guidelines for providing parking and mitigating vehicle trips come mainly from the Institute of Transportation Engineers (ITE) Trip Generation Manual and the ITE Parking Generation Manual. However, both manuals have well-known shortcomings. The goal of this study is to determine how many fewer vehicle trips are generated at TODs, and how much less parking is required at TODs, than ITE guidelines would suggest. To answer these questions, we measure trip and parking generation at five TODs using a methodology that is the most robust published to date.17.

Examination of mobile device data in transportation research and planning practices has occurred in a variety of contexts. However, little investigation of its potential to enhance transportation planning processes in parks and public lands has happened to date. The National Park Service partnered with the U.S. Department of Transportation Volpe Center and Colorado Department of Transportation to investigate how mobile device data can enhance regional and park-level transportation planning efforts by better answering questions about transportation system usage patterns. Using the StreetLight Insight data platform, we evaluated desired use cases and communication strategies for scoping, evaluating, procuring, and applying mobile device data to park- and system-level planning challenges. The analyses of a Colorado statewide visitor data sample were found to be promising data sources for planning tasks including understanding the relationships between gateway communities and parks, internal traffic/visitor flows, dwell times at internal park destinations, and speeds on park- and park-adjacent roadways.