Research Projects | National Institute for Transportation and Communities

Using Time-Series Analysis to Precisely Identify and Rank Road Hotspots

Principal Investigator: Alexander Lee

Co-Investigator: Wei Lin

Over the past decades, many ranking methods have been proposed. However, results vary from method to method, and one of the issues behind ranking is the element of subjectivity. One approach to resolve these issues is the use of combined models. One ... Read More

Data and Methodological Issues in Assessing Multimodal Transportation Impacts for Urban Development

Principal Investigator: Kristina Currans

In 1976, the Institute of Transportation Engineers (ITE) compiled their first Handbook of guidelines and methods for evaluating development-level transportation impacts, specifically vehicular impacts (Institute of Transportation Engineers 1976). Dec ... Read More

Exploring the positive utility of travel and mode choice

Principal Investigator: Patrick Singleton

Traditionally, travel is considered a disutility to be minimized, and travel demand is derived from activity demand. Recently, scholars have questioned these axioms, noting that some people may like to travel, use travel time productively, find other ... Read More

Exploring Drivers’ Attitudes and Behaviors toward Bicyclists: The Effect of Explicit and Implicit Attitudes on Self-Reported Safety Behaviors

Principal Investigator: Tara Goddard

Bicycling in the United States is disproportionately unsafe as a transportation mode. Despite comprising a smaller share roadway users, bicyclists are twelve times more likely to be killed in a traffic crash with a car than car occupants (Pucher and ... Read More

Pedestrian Modeling and Agent Cognition

Principal Investigator: Nicholas Perdue

Walking is one of the most commonplace forms of human expressions, yet the forms, motivations, and practices of walking vary greatly and are often at odds with dominant discourses in urban and transportation planning. As interest in pedestrianoriente ... Read More

Active Travel Behavior and Spatial-Temporal Land Use Mixing

Principal Investigator: Steven Gehrke

Urban policies have emphasized the importance of land use mixing as an intervention beholding of lasting planning and public health benefits. Transportation planners have identified potential in efficiency gains achieved by increasing land use mix an ... Read More

Characterization of the urban roadway atmospheric environment to evaluate transportation impacts and improve exposure assessment

Principal Investigator: Christine Kendrick

Urban arterials are landscapes that give rise to short and long-term exposures to increased transportation-related pollution. With high traffic volumes and a wide mix of road users such as those waiting for transit, pedestrians, and bicyclists, urban ... Read More

Shared Space and Bicyclists

Principal Investigator: Allison Duncan

Shared space is a traffic calming technique and design concept. The technique is relatively new, and the majority of existing research concerns pedestrians only. This mixed methods study will be international in scope focusing on intersections in E ... Read More

Bicyclists’ Uptake of Traffic-Related Air Pollution: Effects of the Urban Transportation System

Principal Investigator: Alex Bigazzi

While bicyclists and other active travelers obtain health benefits from increased physical activity, they also risk uptake of traffic-related air pollution. But pollution uptake by urban bicyclists is not well understood due to a lack of direct measu ... Read More

Thinking Outside the (Half-Mile) Circle: Using the Real Estate Market to Establish Variations in Light Rail Station Catchment Areas

Principal Investigator: Susan Petheram

Dissertation Summary:This research empirically evaluates the extent of catchment zones for transit-oriented development (TOD) around light rail station areas using hedonic and spatial modeling techniques. Using a longitudinal approach, an asse ... Read More

Incorporating Pedestrian Considerations into Signal Timing

Principal Investigator: Sirisha Kothuri

The role of walking in the development of healthy, livable communities is being increasingly recognized. In urban areas, intersections represent locations where different modes converge, and are often viewed as deterrents to walking. This is due to t ... Read More

Travel Mode Choice Framework Incorporating Realistic Bike and Walk Routes

Principal Investigator: Joseph Broach

For a number of reasons (congestion, public health, greenhouse gas emissions, energy use, demographic shifts, and community livability to name a few), the importance of walking and bicycling as transportation options will likely continue to increase. ... Read More

27 Results