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• 1. [Article] The "ADaM Cube" : Categorizing Portland, Oregon's Urbanization Using GIS and Spatial Statistics

  Transportation availability and land use intensity demonstrate a strong relationship, with intense development concentrated near significant transportation investment. Transportation networks evolved in ...

  Citation × Citation Citation Abstract Copy Title: The "ADaM Cube" : Categorizing Portland, Oregon's Urbanization Using GIS and Spatial Statistics Author: Grotbo, Jeremy Year: 2016 Transportation availability and land use intensity demonstrate a strong relationship, with intense development concentrated near significant transportation investment. Transportation networks evolved in response to emergent transportation technologies and changing urban land uses. The irregular distribution of transportation systems reinforced patterns of land use development, shaping urban form. Understanding the relationships between transportation and the intensity of land uses allows urban geographers and city planners to explain the urbanization processes, as well as to identify areas historically susceptible to future development. The goal of this research is to develop a quantitative framework for the analysis of the development of urban form and its relationship to urban transportation systems. This research focuses on transportation accessibility, building density, and the structural massing as the basic metrics in the categorization of urban form. Portland, Oregon serves as the case study environment, while the research methodology examines the spatial and statistical relationship between these metrics for much of the city's urban area. Applying geographic information systems (GIS) and k-means cluster analysis, urban form metrics are compared within the ADaM (Accessibility, Density, and Massing) cube, a model demonstrating comparative relationships, as well as the geographic distribution and patterns of urban form in Portland, Oregon's neighborhoods. A finalized urban form catalog describes existing urban environments, but also indicates areas of impending transition, places having the strong potential for reorganization with respect to higher levels of transportation accessibility. The ADaM Cube is a tool for characterizing Portland's existing urban form, and describing the vulnerabilities of urban neighborhoods to the pressure of redevelopment. Title: The "ADaM Cube" : Categorizing Portland, Oregon's Urbanization Using GIS and Spatial Statistics Author: Grotbo, Jeremy Year: 2016 Transportation availability and land use intensity demonstrate a strong relationship, with intense development concentrated near significant transportation investment. Transportation networks evolved in response to emergent transportation technologies and changing urban land uses. The irregular distribution of transportation systems reinforced patterns of land use development, shaping urban form. Understanding the relationships between transportation and the intensity of land uses allows urban geographers and city planners to explain the urbanization processes, as well as to identify areas historically susceptible to future development. The goal of this research is to develop a quantitative framework for the analysis of the development of urban form and its relationship to urban transportation systems. This research focuses on transportation accessibility, building density, and the structural massing as the basic metrics in the categorization of urban form. Portland, Oregon serves as the case study environment, while the research methodology examines the spatial and statistical relationship between these metrics for much of the city's urban area. Applying geographic information systems (GIS) and k-means cluster analysis, urban form metrics are compared within the ADaM (Accessibility, Density, and Massing) cube, a model demonstrating comparative relationships, as well as the geographic distribution and patterns of urban form in Portland, Oregon's neighborhoods. A finalized urban form catalog describes existing urban environments, but also indicates areas of impending transition, places having the strong potential for reorganization with respect to higher levels of transportation accessibility. The ADaM Cube is a tool for characterizing Portland's existing urban form, and describing the vulnerabilities of urban neighborhoods to the pressure of redevelopment. Close

• 2. [Article] Understanding Where We Live and How We Travel

  Understanding changing residential preferences—especially as they are represented within land use and travel demand models—is fundamental to understanding the drivers of future housing, land use and transportation ...

  Citation × Citation Citation Abstract Copy Title: Understanding Where We Live and How We Travel Author: Currans, Kristina Marie Year: 2016 Understanding changing residential preferences—especially as they are represented within land use and travel demand models—is fundamental to understanding the drivers of future housing, land use and transportation policies. As communities struggle to address a rising number of social challenges with increasing economic uncertainty, transportation and land use planning have become increasingly centered on assumptions concerning the market for residential environments and travel choices. In response, an added importance has been placed on the development of toolkits capable of providing a robust and flexible understanding of how differing assumptions contribute to a set of planning scenarios and impact future residential location decisions. In this presentation, we discuss one such improvement that can be added to the transportation planning toolkit: an innovative visual online survey tool. This tool was developed to provide a means for researchers to communicate the residential environment to the public. Within this study, we test the ability for the general population to see neighborhood environments consistently. Then we apply this tool within an original data collection, which focuses on examining the residential preferences and trade-offs between neighborhood and commute choices. We discuss the methods developed, lessons learned, and results from the Oregon-based pilot studies testing and applying this new tool. Title: Understanding Where We Live and How We Travel Author: Currans, Kristina Marie Year: 2016 Understanding changing residential preferences—especially as they are represented within land use and travel demand models—is fundamental to understanding the drivers of future housing, land use and transportation policies. As communities struggle to address a rising number of social challenges with increasing economic uncertainty, transportation and land use planning have become increasingly centered on assumptions concerning the market for residential environments and travel choices. In response, an added importance has been placed on the development of toolkits capable of providing a robust and flexible understanding of how differing assumptions contribute to a set of planning scenarios and impact future residential location decisions. In this presentation, we discuss one such improvement that can be added to the transportation planning toolkit: an innovative visual online survey tool. This tool was developed to provide a means for researchers to communicate the residential environment to the public. Within this study, we test the ability for the general population to see neighborhood environments consistently. Then we apply this tool within an original data collection, which focuses on examining the residential preferences and trade-offs between neighborhood and commute choices. We discuss the methods developed, lessons learned, and results from the Oregon-based pilot studies testing and applying this new tool. Close

• 3. [Article] Planning Transportation for Recreational Areas

  Population growth and increased accessibility of formerly remote destinations have created new needs for planning mobility to and within recreational areas. Transportation planners studying recreational ...

  Citation × Citation Citation Abstract Copy Title: Planning Transportation for Recreational Areas Author: Dunning, Anne Year: 2016 Population growth and increased accessibility of formerly remote destinations have created new needs for planning mobility to and within recreational areas. Transportation planners studying recreational travel face unusual travel-demand peaks, travelers who are often unfamiliar with their surroundings, and a uniquely important need for traveler and community communication. Planners must consider what characteristics of an individual area make it attractive to visitors, as well as local goals for the special resources of the area. This presentation will characterize unique facets of mobility in recreational areas, and pose approaches to planning transportation systems to serve them. Title: Planning Transportation for Recreational Areas Author: Dunning, Anne Year: 2016 Population growth and increased accessibility of formerly remote destinations have created new needs for planning mobility to and within recreational areas. Transportation planners studying recreational travel face unusual travel-demand peaks, travelers who are often unfamiliar with their surroundings, and a uniquely important need for traveler and community communication. Planners must consider what characteristics of an individual area make it attractive to visitors, as well as local goals for the special resources of the area. This presentation will characterize unique facets of mobility in recreational areas, and pose approaches to planning transportation systems to serve them. Close

• 4. [Article] Edged Out: Location Efficient Housing and Low Income Households in the Portland Region

  Transportation costs are typically a household’s second largest expense after housing. Low income households are especially burdened by transportation costs, with low income households spending up to two ...

  Citation × Citation Citation Abstract Copy Title: Edged Out: Location Efficient Housing and Low Income Households in the Portland Region Author: Tremoulet, Andrée, Dann, Ryan Year: 2016 Transportation costs are typically a household’s second largest expense after housing. Low income households are especially burdened by transportation costs, with low income households spending up to two times as much of their income on transportation than higher income households (Litman, 2013). Thus, access to location efficient housing is especially important to low income households, including those who use a housing voucher to help pay for housing costs. This seminar presents the results of a two-year project supported by the Portland region's four public housing authorities to design and test tools to help people with housing vouchers find location efficient housing. We examine the challenges that residents faced and discuss policy implications. Title: Edged Out: Location Efficient Housing and Low Income Households in the Portland Region Author: Tremoulet, Andrée, Dann, Ryan Year: 2016 Transportation costs are typically a household’s second largest expense after housing. Low income households are especially burdened by transportation costs, with low income households spending up to two times as much of their income on transportation than higher income households (Litman, 2013). Thus, access to location efficient housing is especially important to low income households, including those who use a housing voucher to help pay for housing costs. This seminar presents the results of a two-year project supported by the Portland region's four public housing authorities to design and test tools to help people with housing vouchers find location efficient housing. We examine the challenges that residents faced and discuss policy implications. Close