Arlie Adkins

Unpacking Walkability: Testing the Influence of Urban Design Features on Perceptions of Walking Environment Attractiveness

The potential environmental and health benefits of active transportation modes (e.g. walking and cycling) have led to considerable research on the influence of the built environment on travel. This paper presents the findings of a study combining environmental audits and a survey-based respondent mapping tool to test the influence of micro-scale built environment characteristics, including ‘green street’ storm water management features, on resident perceptions of walking environment attractiveness. Results suggest that this method is sensitive enough to unpack a concept like walkability into individual component characteristics. Findings from an ordinary least squares (OLS) regression model indicate that in a predominantly single-family residential context well-designed green street facilities, as well as other features such as parks, separation from vehicle traffic, and pedestrian network connectivity can significantly contribute to walking environment attractiveness.

Are Suburban TODs Over-Parked?

A survey of 31 multi-family housing complexes near rail stations in the San Francisco Bay Area and Portland, Oregon, show peak parking demand is 25-30 percent below supplies and, for most projects, falls below national standards. Peak parking demand is generally less for less expansive projects with short walking distances to rail stations that enjoy frequent peak-period services. Case study experiences suggest that well-designed, short and direct walking paths to rail stops lessen peak parking. A national survey of 80 U.S. cities with rail stations revealed that 75 percent have minimum transportation-oriented development (TOD) parking requirements that mandate more parking than suburban design standards and 39 percent grant variances for housing projects near rail stops.

Moving to Location Affordability? Housing Choice Vouchers and Residential Relocation in the Portland, Oregon, Region

Abstract Location affordability measures a household’s combined cost of housing and transportation. Low-income households have the most to gain from housing with lower transportation costs. This research analyzes whether Housing Choice Voucher Program households—participants in a program designed to provide low-income households with a greater degree of housing choice—are able to choose housing that lowers their transportation costs in a metropolitan region with a compact, vital urban core. A mixed-methods approach is used to investigate the differences in location affordability and efficiency among 2,026 voucher recipients who moved within the Portland, Oregon, region during 2012–2013. Location mattered to movers, but in some unexpected ways. Urban movers relocated to less location efficient areas, whereas suburban movers’ location efficiency remained stable. In tight housing markets, voucher holders may be edged out of location-efficient neighborhoods and thus incur increased transportation costs.

Contextualizing Walkability Do Relationships Between Built Environments and Walking Vary by Socioeconomic Context

Problem, research strategy, and findings: Supportive built environments for walking are linked to higher rates of walking and physical activity, but little is known about this relationship for socioeconomically disadvantaged (e.g., low-income and racial/ethnic minority) populations. We review 17 articles and find that most show that the built environment has weaker effects on walking and physical activity for disadvantaged than advantaged groups. Those who lived in supportive built environments walked more and were more physically active than those who did not, but the effect was about twice as large for advantaged groups. We see this difference because disadvantaged groups walked more in unsupportive built environments and less in supportive built environments, though the latter appears more influential. Takeaway for practice: Defining walkability entirely in built environment terms may fail to account for important social and individual/household characteristics and other non–built environment factors that challenge disadvantaged groups, including fear of crime and lack of social support. Planners must be sensitive to these findings and to community concerns about gentrification and displacement in the face of planned built environment improvements that may benefit more advantaged populations. We recommend five planning responses: Recognize that the effects of the built environment may vary by socioeconomics; use holistic approaches to improve walkability; expand walkability definitions to address a range of social and physical barriers; partner across agencies, disciplines, and professions; and evaluate interventions in different socioeconomic environments.

Pedestrian Safety and Public Health

Abstract Pedestrian injuries and deaths should be viewed as a critical public health issue. The purpose of this chapter is to show how incorporating safety from traffic into broader efforts to increase walking and physical activity has the potential to have a significant health impact. In this chapter we provide an overview of pedestrian safety considerations having to do with population health and the built environment. The chapter is organised around a conceptual framework that highlights the multiple pathways through which safe walking environments can contribute to improved population health. We review the existing literature on pedestrian safety and public health. Pedestrian safety will remain a vexing challenge for public health and transportation professionals in the coming decades. But addressing this problem on multiple fronts and across multiple sectors is necessary to reduce injuries and fatalities and to unleash the full potential of walking to improve population health through increased physical activity. This chapter uniquely contributes a conceptual framework for understanding the relationship between the walking environment and public health.

How Location Efficient Is LIHTC? Measuring and Explaining State-Level Achievement

Abstract A growing recognition that the cost of transportation should be included in calculations of housing affordability has led to efforts to promote location efficiency (LE) in affordable housing policy. Because the program is responsible for most new affordable housing in the United States, the Low Income Housing Tax Credit (LIHTC) program has the potential to be a link between housing affordability and LE. This research analyzes the extent to which LIHTC units built between 2007 and 2011 were in location-efficient places. Ordinary least squares regression analysis was used to test the role of market, policy, developer, and urban form factors in determining state-level LIHTC LE. We find that for the nation as a whole, from a quarter to half of LIHTC units added during this period were in location-efficient places, depending on the LE criteria applied. State-by-state comparisons showed wide variation in both our absolute measures of LIHTC LE and our relative measures of LIHTC LE compared with overall housing in each state. State policy and nonprofit developers were associated with higher LIHTC LE and had a positive effect on a state’s ability to outperform its underlying urban form.