Social and Behavioral Sciences Commons^™

Contextual Guidance At Intersections For Protected Bicycle Lanes, Christopher M. Monsere, Nathan Mcneil, Yi Wang, Rebecca Sanders

TREC Final Reports

Improved bicycle infrastructure has become increasingly common in the United States as cities seek to attract new riders, including the demographics of people who do not feel comfortable riding with motor vehicle traffic. A key tool is separated or protected bicycle lanes, and intersections are critical links in a low-stress network. This report presents an analysis of the perceived level of comfort of current and potential bicyclists from 277 survey respondents who rated 26 first-person video clips of a bicyclist riding through mixing zones, lateral shifts, bend-in, bend-out and protected intersection designs. A total of 7,166 ratings were obtained from …

Key Enhancements To The Wfrc/Mag Four-Step Travel Demand Model, Reid Ewing, Sadegh Sabouri, Keunhyun Park, Torrey Lyons, Guang Tian

TREC Final Reports

In a National Transit Institute course on “Coordinating Land Use and Transportation,” co-taught by Robert Cervero, Uri Avin, and the PI on this project, the analytic tools session began with a hypothetical: assume that all households, jobs, and other trip generators are concentrated in a walkable village rather than segregated by use and spread across a traffic analysis zone in the standard suburban fashion. The instructor then asks: How would the outputs of conventional four-step travel demand models differ between these two future land use scenarios. The answer, to most participants’ surprise, was “Not at all.” Conventional four-step travel demand …

The Link Between Transit Station Proximity And Real Estate Rents, Jobs, People And Housing With Transit And Land Use Planning Implications, Arthur C. Nelson, Robert Hibberd

TREC Final Reports

This report updates and expands prior research in the genre of research that has used economic base analysis (especially shiftshare) and CoStar commercial rent data to estimate the development outcomes to transit. The study period for prior economic base analysis was 2002-2011and census data for 2000 and 2010, as well as CoStar data for 2013. Prior analysis compared development, demographic and housing outcomes associated with those transit systems during the period before the Great Recession (2000 through 2007) and during recession into recovery (2008 through 2011). Though NITC researchers found important differences in outcomes between the study periods of 2000-2007 …

Fast Track: Allowing Bikes To Participate In A Smart-Transportation System, Stephen Fickas, Marc Schlossberg

TREC Final Reports

This project focuses on a mode of transportation that is currently left out of V2X (vehicle-to-everything) conversations: bicycling. The project demonstrates how university researchers, city traffic engineers, and signal-controller manufacturers can come together to give bicyclists the same technology appearing on modern vehicles: Green Light Optimized Speed Advisory (GLOSA). GLOSA allows motorists to set their speed along corridors to maximize their chances of catching a “green wave” (i.e., not being forced to stop as they travel through the corridor). This project demonstrates how GLOSA can be used by bicyclists in the same way it is used by motorists on a …

Evaluation Of Bus/Bicycle Andbus/Right-Turn Traffic Delays And Conflicts, Miguel A. Figliozzi, Katherine Keeling, Travis Glick

TREC Final Reports

This research evaluates conflicts and delays caused by interactions between buses, bicycles, and right-turningvehicles. Two concerns caused by these overlapping bus, bicycle, and automobile facilities are analyzed; the firstconcern is the number of bus-bicycle conflicts (as a proxy for safety) and the second concern is bus delay. Video datawas collected and analyzed to quantify conflicts, travel time, and delay. For every bus passing through the study site,the mixed-traffic scenario that the bus incurs was categorized as one of 72 different combinations of bus, bicycle, andautomobile interactions. Video count data was weighted according to seasonal, weekly, and hourly bicycle volumedata to …

Biking And Walking Quality Counts: Using “Bikeped Portal” Counts To Developdata Quality Checks, Nathan Mcneil, Kristin Tufte

TREC Final Reports

Cycling and walking are sustainable modes of transportation which improve community livability, but these modes have not been studied with the quantitative rigor applied to motor vehicle travel. This work aims to change that by improving bicycle and pedestrian traffic monitoring data quality, including how erroneous data can most accurately and efficiently be identified through automated processes. The research approach analyzes continuous bicycle and pedestrian count data stored in BikePed Portal, a data archive of bicycle and pedestrian count data. A primary goal of the project is to explore tests that could help to identify aberrant and/or erroneous data. A …

Developing Data, Models, And Tools To Enhance Transportation Equity, Amy Lubitow, Raoul Liévanos, Julius Mcgee, Erika Carpenter

TREC Final Reports

This project used a mixed-methods approach to data collection and analysis in the Portland, OR, metropolitan area. It used quantitative techniques, the 2010 Decennial Census, and the 2011 Oregon Household Activity Survey to assess how accurately travel survey data represent minority populations. These groups are of primary interest due to their status as protected classes under Title VI of the Civil Rights Act, and accurate data on the mobility patterns of these groups is essential to equitable transportation planning. Qualitative focus groups with residents in the Portland metropolitan area investigated better methods for building equity into transportation surveys using community …

How Technology Can Affect The Demand For Bicycle Transportation: The State Of Technology And Projected Applications Of Connected Bicycles, John Macarthur, Michael Harpool, Daniel Scheppke

TREC Final Reports

The term “connected vehicle (CV)” refers to vehicles equipped with devices, which enable wireless communication betweeninternal and external entities, supporting vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) and vehicle-to-everything (V2X)communications. The widespread deployment of CVs will address a range of transportation challenges related to safety, mobility,and sustainability. Recent research efforts on connected bicycles have focused on the uses and limitations of the state-of-the-arttechnologies, safety implications, the reliability of various communication modes, and consumer adoption. Existing researchfocuses on either technologies that utilize data received from sensors and the internet to govern devices attached to the bicycle(situational sensing) or two-way communication. While there has been …

A Comprehensive Examination Of Electronic Wayfinding Technology For Visually Impaired Travelers In An Urban Environment, Martin Swobodzinski, Amy T. Parker

TREC Final Reports

In this project, we distilled an inventory of smartphone-based electronic travel aid technology for the wayfinding of visually impaired travelers in an urban environment based on a thorough review of software marketplaces and the academic literature. Subsequently, we solicited structured input from domain experts and visually impaired individuals on their experiences and evaluations pertaining to personal telecommunication technology for safe and efficient wayfinding. The insights gained from this project are instrumental for the conceptualization and development of integrated route planning and guidance application that address the distinct information needs and expectations of individuals with a vision-related functional impairment. The very …

Understanding Factors Affecting Arterial Reliability Performance Metrics, Jason C. Anderson, Rohan Sirupa, Sirisha Kothuri, Avinash Unnikrishnan

TREC Final Reports

In recent years, the importance of travel time reliability has become equally important as average travel time. However, the majority focus of travel time research is average travel time or travel time reliability on freeways. In addition, the identification of specific factors (i.e., peak hours, nighttime hours, etc.) and their effects on average travel time and travel time variability are often unknown. The current study addresses these two issues through a travel time-based study on urban arterials. Using travel times collected via Bluetooth data, a series of analyses are conducted to understand factors affecting reliability metrics on urban arterials. Analyses …

Social-Transportation Analytic Toolbox (Stat) For Transit Networks, Xiaoyue Cathy Liu, Qian Zuo, Shenruoyang Na, Ran Wei, Aaron Golub, Liming Wang, Jake Davis

TREC Final Reports

This project builds an open-source, socio-transportation analytic (STAT) toolbox for public transit system planning in an effort to integrate social media and general transit feed specification (GTFS) data for transit agencies in evaluating and enhancing the performance of public transit systems. This toolbox is novel and essential to transit agencies in two aspects. First, it enables the integration, analysis and visualization of two major, new open transportation data, social media and GTFS data, to support transit decision-making. Second, it allows transit agencies to evaluate service network efficiency and access equity of transit systems in a cohesive manner, and identify areas …

Bicycle Planning Gis Tool, Joseph Broach

TREC Final Reports

Although currently only about one percent of US trips are done by bicycle, there is significant geographic variation. Differences across communities, along with much higher cycling rates observed in other places around the world, indicates large potential bicycling demand for daily travel in the US. In response, many communities are developing and implementing bicycle master plans that include a range of bikeway infrastructure aimed at making riding more appealing, including separated paths, protected (or separated) bike lanes, striped bike lanes, bicycle boulevards, sharrows, route signage, and intersection crossing aids. Given limited resources, planners and engineers need tools to estimate the …

National Scan Of Bike Share Equity Programs: Approaches And Best Practices For Promoting Equity In Bike Share, Nathan Mcneil, John Macarthur, Joseph Broach, Austin Cummings, Rae-Leigh Stark, Rebecca Sanders, Adrian Witte

TREC Final Reports

As bike share systems around the United States have grown in number and size in recent years, there has been an increasing effort to ensure that those systems are accessible to all residents, particularly those who have the fewest resources or have been underserved in the past. The mobility landscape in 2019 is rapidly changing, with scooter and e-bike systems along with ride-hailing and ride-sharing companies contributing to a new and uncharted urban transportation scene. Meanwhile, bike share is still relatively new and changing quickly. In order to compete and excel in this changing landscape, particularly with regard to providing …

Characterizing The Trip Generation Profiles Of Multifamily Housing, Kelly Clifton, Kristina M. Currans

TREC Final Reports

Cities are increasingly wanting to assess the impacts new development has on all modes in the transportation system. Many communities are requiring site-level transportation impact analysis to examine travel outcomes. The historical focus on developing data and methods exclusively for the automobile, such as the Institute of Transportation Engineers (ITE) Trip Generation Handbook, has left planners with little guidance for these new challenges. This study aims to examine the limitations in the dominant approaches to understand how they may misguide the planning process for multifamily housing development. Specifically, we aim to examine the vehicle and person trip generation rates associated …

Planning In Gateway And Natural Amenity Region Communities: Understanding The Unique Challenges Associated With Transportation, Mobility, And Livability, Danya Rumore, Philip Stoker, Zacharia Levine, Lindsey Romaniello

TREC Final Reports

Communities outside of major public lands and other natural amenities throughout the western United States face a variety of transportation and planning-related concerns associated with rapid growth and increases in tourism. Surprisingly, while the unique transportation and planning-related challenges of these western gateway and amenity region (GNAR) communities have, to some extent, been documented in recreation and tourism research, these concerns have largely been overlooked in planning scholarship. To begin to address this gap, this report presents key descriptive findings from a study aimed at examining the unique transportation, mobility, and access to opportunity-related challenges being experienced by GNAR communities …

Defining And Measuring Equitable Access To Washington Park In Portland, Oregon, Marisa Zapata, Joseph Broach, Kara Boden, Qingyang Xie

TREC Final Reports

Explore Washington Park (EWP) is a 501c3 non-profit that serves as the Transportation Management Association for Washington Park. At 410 acres, Washington Park receives over 3 million visitors each year and is home to some of Portland’s most popular attractions including the International Rose Test Garden, Portland Japanese Garden, Oregon Zoo, Portland Children’s Museum, World Forestry, and Hoyt Arboretum. EWP, in partnership with Portland Parks & Recreation, provides transportation management and guest services to the park and its cultural institutions with the goal of decreasing the number of vehicle trips to the park. Since beginning its work in 2014, transit …

Life-Space Mobility And Aging In Place, Ivis Garcia Zambrana, Alan Kenneth Delatorre, Ja Young Kim, Julianne Reno, Keith Diaz Moore, Jordan Pieper, Jason Wheeler, Nicole Zinnanti, Brenda Jose

TREC Final Reports

Research on older adults explores the notion of “aging in place”—providing older adults the opportunity to continue to occupy familiar surroundings, to live in their own homes and communities. But oftentimes one’s ability to stay or leave, particularly in old age, depends on the built environment. Mobility is the ability to meet the basic needs to access goods, activities, services, and social interactions as they relate to quality of life. Thus, mobility is essential to older adults due to their limited, or gradually reducing, physical and cognitive abilities. In transportation research, mobility is often regarded in terms of travel behavior …

How Will Autonomous Vehicles Change Local Government Budgeting And Finance? Case Studies Of On-Street Parking, Curb Management, And Solid Waste Collection, Benjamin Y. Clark

TREC Final Reports

This report is an examination of parking, curb zones, and government service changes in the context of AVs. Given that there are very few actual AVs on the road, the analysis in this report is an attempt to project what we might see, using the current phenomenon as starting points. The report uses a mix of econometric modeling, cost accounting, and case studies to illustrate these projections. The first section of this report looks at the effects of transportation network companies (TNCs)—Uber and Lyft in particular—on parking revenue in the city of Seattle. The results of the study indicate that …

The E-Bike Potential: Estimating The Effect Of E-Bikes On Person Miles Travelled And Greenhouse Gas Emissions, Michael Mcqueen, John Macarthur, Christopher Cherry

TREC Final Reports

Many cities have goals for reducing automotive VMT in order to reduce tailpipe emissions and to reduce congestion. Conventional cycling is a good solution, though its uptake has slowed in recent years in several cities, despite the implementation of greenways, bikeshare, and bike lines (Anderson and McLeod 2017). Electric bicycles (e-bikes) could be an effective new part of the solution to combat mode shift stagnation. The e-bike is a recently introduced mode of travel that is rapidly gaining in popularity throughout the United States.

The e-bike can offer a cheaper alternative to car travel (Popovich et al. 2014) and can …

How E-Bike Incentive Programs Are Used To Expand The Market, Michael Mcqueen, John Macarthur, Christopher Cherry

TREC Final Reports

The electric bicycle (e-bike) is a low emission mode of transportation that offers communities benefits in the areas of health, planning, time, cost, street safety, congestion, air pollution, noise pollution, and energy security (Blondel, Mispelon, and Ferguson 2011). In a recent study conducted by Portland State University, e-bikes have been found to enable more people to ride a bicycle for longer distances despite physical limitations, difficult terrain, and the presence of cargo (MacArthur et al. 2018). However, overall e-bike adoption in the United States remains limited due in part to high purchase cost (Dill and Rose 2012; Popovich et al. …

Traffic Signal Consensus Control, Gerardo Lafferriere

TREC Final Reports

We introduce a model for traffic signal management based on network consensus control principles. The underlying principle in a consensus approach is that traffic signal cycles are adjusted in a distributed way so as to achieve desirable ratios of queue lengths throughout the street network. This approach tends to reduce traffic congestion due to queue saturation at any particular city block and it appears less susceptible to congestion due to unexpected traffic loads on the street grid. We developed simulation tools based on the MATLAB computing environment to analyze the use of the mathematical consensus approach to manage the signal …

How Can Interdisciplinary Teams Leverage Emerging Technologies To Respond To Transportation Infrastructure Needs? A Mixed-Methods Evaluation Of Civil Engineers, Urban Planners, And Social Workers’ Perspectives, Noelle Fields, Courtney Cronley, Kate Hyun, Stephen Mattingly, Vivian J. Miller, Saeed Reza Ramezanpour Nargesi, Sheida Khademi, Shamsun Nahar, Jessica Williams, Erin Roark Murphy, Melinda Kitchens, Vanessa Wattron

TREC Final Reports

This study explored how engineers, planners, and social workers interact around issues of transportation and transportation equity, and identified opportunities for enhanced collaboration and training in anticipation of emerging transportation needs for environmental justice (EJ) populations. This study provided the foundation for future educational research, identify strategies for using two Android apps (Safe Activity and My Amble) developed at the University of Texas at Arlington (UTA), and identified opportunities for collaborative solutions within the state of the practice. The study assessed the current level of knowledge amongst professionals (engineers, planners, and social workers) about the training needs of the other …

V2x: Bringing Bikes Into The Mix, Stephen Fickas

TREC Final Reports

This project demonstrates how an inexpensive system (hardware and software) can add new functionality to existing signal controllers, giving bicyclists an efficient way to cross a controlled intersection. The system integrates three components: (1) a Bike Connect box that resides near the signal-controller and is connected to it, (2) an application that runs on a Bike Connect device (currently an iPhone) and requests a green light at the correct approach-distance, and (3) a cloud-based publish/subscribe (pub/sub) component that handles cellular-communication between phone app and box. One stumbling block for the project was a means to obtain reliable GPS data to …

Transferability & Forecasting Of The Pedestrian Index Of The Environment (Pie) For Modeling Applications, Kelly Clifton, Jamie Orrego-Onate, Patrick Allen Singleton, Robert J. Schneider

TREC Final Reports

This project focuses on making our measures, models, and methods more transferable to other locations. Specifically, we re-evaluate, compare and test our pedestrian index of the environment (PIE) measure using data resources more commonly available to planning agencies across the country. Next, we test the results of PIE and its input data in models of pedestrian mode choice for stability of estimation results within a region (intraregional) and between regions (interregional). This research is the next logical step in the MoPeD’s enhancement and is critical to enabling its utility beyond the Portland region. The results of this project show that …

Addressing Changing Demographics In Environmental Justice Analysis, State Of Practice, Aaron Golub, Les Brown, Michael Grant, Nathan Mcneil, Charles Ryerson, Matt Gray, Stephanie Lonsdale, Madison Levy

TREC Final Reports

This report documents how metropolitan planning organizations (MPO), State departments of transportation (DOT), and other transportation agencies are adapting Environmental Justice (EJ) analysis techniques to understand transportation impacts in communities undergoing rapid demographic change. The report also highlights national demographic trends, showing significant change in the size and location of low-income and minority households. These changes are documented in a series of State- and county-level maps demonstrating absolute and percent change in minority populations, low-income populations and limited English proficiency populations between the 1990 – 2010 decennial census periods. Based on the state of practice review, the report also highlights …

Rethinking Streets For Bikes: An Evidencebased Guidebook, Marc Schlossberg, John Rowell, Roger Lindgren, Dave Amos

TREC Final Reports

This project is a follow up to a successful previous NITC project and subsequent nationally distributed book, called “Rethinking Streets: An Evidence-Based Guide to 25 Street Transformations.” The success of the first book demonstrated a need for easy access to evidence-based transportation information that can be used by practitioners, community members, policymakers, educators, and researchers. This project produced a follow-up guidebook, but with a focus on streets redesigned to accommodate bicycle transportation in ways following current best practices. Whereas the first book purposefully focused on “average” street retrofit projects to communicate the normalcy of such projects around the country, this …