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As metropolitan area governments and others promote density-promoting “smart growth” policies, finer analysis is needed to quantify the impact of such policies on households' transportation and housing costs. Existing research suggests that households in urban areas trade-off between housing costs and transportation costs, but does not explore how policies to increase urban densities might explicitly impact this balance. Furthermore, the research does not adequately distinguish between the effect of urban area density and the effects of other factors associated with urban area density (e.g metropolitan area size and household incomes) on housing costs. This research uses the 2000 Census Public Use Micro Sample (PUMS) person and household data from 23 of the nation's most densely populated states to identify the impact of increased population density on three housing cost measures: household rents, housing unit values, and monthly mortgage payments. Log linear models were estimated for each housing cost measure using least-squares regression. Dependent variables included household, housing unit, and geographic area characteristics, including population density. The models were found to be very similar to one another in terms of the statistical significance...

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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 times as much of their income on transportation than higher income households (Litman, 2013).

Thus, access to...

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The Myth of Oregon's "Freight Dependent" Economy

Although it is widely claimed that Oregon's economy is dependent on freight movement, economic activity in Oregon has decoupled from physical goods movement. Truck traffic per unit of gross state product has fallen, and even the loss of regular container service to Portland has had no measurable effect on the region's economy.

Oregon's economy has shifted away from freight intensive industries and now depends on knowledge...

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Smart Cities: Improving the Roadside Environment with Distributed Sensor Systems

The City of Portland is exploring how distributed “Internet of Things” (IoT) sensor systems can be used to improve the available data that is usable by city engineers, planners, and the public to help inform transportation operations, enable assessments of public health and equity, advance Portland’s Climate Action Plan goals, and...

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Webinar: Economic Impacts from Bicycle and Pedestrian Street Improvements

As many cities are investing in street improvements to provide better biking and walking experiences, the economic value and impacts of these active transportation facilities remain areas where many practitioners, planners and policy makers are seeking more conclusive evidence. With various modes competing for scarce resources, planners and transportation agencies often...

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Webinar: The Effects of Demand-Responsive Parking on Transit Usage and Congestion

WEBINAR SUMMARY
Parking is a serious issue in many urban areas, especially those experiencing rapid population growth. To address this problem, some cities have implemented demand-responsive pricing...

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ITS Lab (Engineeering 315)

Abstract: Despite the never-ending cascade of depressing economic developments recently, there are some encouraging new trends to be discovered. Some of these trends relate to the vehicles we buy and how we drive them, and the consequences of these actions. In this presentation, I will discuss several new findings about the positive influences of the recent economic changes on (1) the fuel efficiency of purchased new vehicles, (2) the amount and type of driving that we do, (3) how much carbon dioxide emissions we produce from driving, and (4) the number of road fatalities.

Bio: Dr. Michael Sivak is a Research Professor and the Head of the Human Factors Division of the University of Michigan Transportation Research Institute (UMTRI). He received his Ph.D. in Experimental Psychology from the University of Michigan. Dr. Sivak's primary expertise is in perceptual and cognitive aspects of driving. Examples of his recent research topics include human-factors aspects of vehicle design, bounded rationality and driver behavior, and the relative risks of flying and driving. In 2001, he was named a Distinguished Research Scientist by the University of Michigan. In 2006, he received the A.R. Lauer Award from the Human Factors and Ergonomics Society for outstanding contributions to human aspects of the broad area of safety.

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