Keunhyun Park

Keunhyun Park
University of British Columbia - Vancouver | UBC · Department of Forest Resources Management

Ph.D. in Metropolitan Planning, Policy, and Design

About

44
Publications
7,989
Reads
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378
Citations
Introduction
Keunhyun (Keun) Park is an assistant professor in Urban Forestry at the University of British Columbia and an adjunct professor in Landscape Architecture and Environmental Planning at the Utah State University. He holds a Ph.D. in urban planning and design from the University of Utah. Keun conducts behavioural research in urban forestry design and planning.
Additional affiliations
September 2021 - present
University of British Columbia - Vancouver
Position
  • Professor (Assistant)
Description
  • Urban Forestry program
August 2018 - August 2021
Utah State University
Position
  • Professor (Assistant)
August 2014 - May 2018
University of Utah
Position
  • PhD Student
Education
August 2014 - May 2018
University of Utah
Field of study
  • Metropolitan Planning, Policy, and Design
March 2008 - February 2010
Seoul National University
Field of study
  • Landscape Architecture
March 2002 - February 2008
Seoul National University
Field of study
  • Agriculture (landscape architecture)

Publications

Publications (44)
Article
Full-text available
The COVID-19 pandemic has dramatically altered people's travel behavior, in particular outdoor activities, including walking. Their behavior changes may have prolonged effects after the pandemic, and such changes vary by the context and are related to the characteristics of the built environment. But empirical studies about the relationships betwee...
Article
As human populations become concentrated in larger, more intensely urbanized areas connected through globalization, the relationships of cities to their surrounding landscapes are open to social, ecological, and economic reinterpretation. In particular, the value of access to nature in the form of nearby, undeveloped wildland to urban populations i...
Article
The COVID-19 pandemic response has had a significant impact on the general population’s ability to participate in their communities. Individuals with disabilities, an already socially disadvantaged population, are more vulnerable to and have likely been disproportionately impacted by COVID-19 response conditions. Yet, the extent to which daily comm...
Article
Objective To identify factors that contribute to near-miss collisions between pedestrians and personal transportation devices (PTDs) in a university campus using a novel data collection method, unmanned aerial vehicle (UAV). Participants A total of 3,349 pedestrians and 173 PTD riders were detected through UAV observations. Methods The researcher...
Article
Planners and planning scholars have debated the effects of public transit on changes in various employment outcomes. However, few studies have tried to understand how public transit affects employment changes in a community while accounting for housing costs at the same time. As an update to and methodological advance on early studies, this study a...
Article
Public transit authorities have enhanced the travel experience to promote ridership and customer loyalty. Previous studies about satisfaction and loyalty of transit riders, however, give less attention to out-of-vehicle environments such as walking/biking routes, transfer comfort, and traffic and crime safety conditions. The first-mile and last-mil...
Article
Direct-demand models of pedestrian volumes (identifying relationships with built environment characteristics) require pedestrian data, typically from short-duration manual counts at a limited number of locations. We overcome these limitations using a novel source of pedestrian data: estimated pedestrian crossing volumes based on push-button event d...
Article
Vehicle ownership is an important determinant of the travel demand forecasting process. Vehicle ownership models are used by policy makers to identify factors that affect vehicle miles traveled, and therefore address problems related to energy consumption, air pollution, and traffic congestion. For the conventional travel demand forecasting, it log...
Article
Large parks—including regional parks, state parks, and national forests and parks—have particular health, social, and environmental benefits. Thus, promoting equal access to large parks is increasingly becoming a goal of environmental justice activists, planners, and policymakers. Disadvantaged populations (e.g., low-income people of color) have wo...
Article
Full-text available
This paper describes a before-and-after case study of a protected intersection in Salt Lake City, Utah. The intersection was completed in late 2015 and represented one of the first examples of a protected intersection design in North America. We analyzed bird's-eye view video data that was recorded before the intersection was implemented and compar...
Article
Full-text available
Conventional four-step travel demand models, used by most metropolitan planning organizations (MPOs), state departments of transportation, and local planning agencies, are the basis for long-range transportation planning in the United States. Trip distribution—whether the trip is intrazonal (internal) or interzonal (external)—is one of the essentia...
Article
Full-text available
Different types of urban green spaces provide diverse benefits for human health and environmental sustainability, but most studies on access to green space focus on neighborhood parks, with less work on smaller or larger green spaces. In this study, we examined sociodemographic differences in access to green spaces of different sizes for 14,385 cen...
Article
Full-text available
The use of unmanned aerial vehicles (UAVs), or drones, is becoming increasingly important to the field of landscape architecture, and universities need to adapt their teaching practices to prepare students to use this technology in practice. This article describes the creation of a Department-wide drone program to train students on the operation of...
Article
Full-text available
If a neighbourhood park fails to meet the needs of its residents usage may decrease, which potentially makes the park vulnerable to crime and social disorder. Despite the popularity of studying park visitation or park-based physical activity, there is a lack of studies on factors associated with empty parks. This study explores factors related to t...
Article
Behavior mapping is an effective tool for the direct observation of the interaction between people and places. However, current approaches have shortcomings that introduce location inaccuracies and hinder micro-context recording of observed activities. This study explores the applicability of unmanned aerial vehicles (UAVs) in behavior mapping. Fir...
Article
In the context of rapid urbanization, parks are important assets for enhancing the quality of life in urban settings. They provide opportunities for outdoor physical activity, recreation, and therapeutic benefits. A growing number of park assessment studies are shifting their focus from spatial assessments such as availability, proximity, and acces...
Article
Ride-sourcing services have made significant changes to the transportation system, essentially creating a new mode of transport, arguably with its own relative utility compared to the other standard modes. As ride-sourcing services have become more popular each year and their markets have grown, so have the publications related to the emergence of...
Article
Problem, research strategy, and findings: The monocentric development pattern in the Alonso–Mills–Muth model underpinned theoretical discussions of urban form in the 1960s and 1970s and truly dominated theory up to the point when Joel Garreau published Edge City: Life on the New Frontier in the early 1990s. Monocentric development patterns remain d...
Chapter
Urban planning is information-driven decision-making. Cities and regions are “systems of systems”; their characteristics are many, including the dimensions of time and space. There is much information about the history and characteristics of cities and regions as well as information generated by cities and regions. Plan-making, it can be argued, is...
Article
This study aims to improve a previously-developed methodology for predicting the traffic impacts of mixed-use developments (MXDs). In 31 diverse metropolitan regions across the United States, we collected consistent regional household travel survey data and computed built environment characteristics—D variables—of MXDs. Multilevel modeling (MLM) wa...
Article
The subjects of this comparative case study are Orenco Station, a transit-oriented development (TOD) in the Portland region, and Station Park, a transit-adjacent development (TAD) in Salt Lake City region. The peak parking demand at Orenco Station is less than one half the Institute of Transportation Engineers (ITE) suburban parking supply guidelin...
Article
As the world becomes more urbanized, neighborhood parks are becoming an increasingly important venue where people engage in physical and social activities. Using park-use data collected by unmanned aerial vehicles (UAVs), the aim of this study is to account for park use in light of park attributes and neighborhood conditions. The role of the built...
Article
Emerging research suggests that planners and policy makers should explore the expanded role Transit-Oriented Development (TOD) plays in promoting innovation and economic growth. TOD station characteristics including accessibility, walkability, density, and mixed uses may create environments beneficial for creative and knowledge industries. However,...
Article
Full-text available
Urban design literature says that public open space in a station area could promote walking and other types of physical activity, enhance place attractiveness, and increase property values. In the context of station areas, however, there is a lack of empirical studies on the relationship between the presence of parks and sustainable travel behavior...
Article
The planning literature has taken a recent interest in journal article citation counts, which are often used to measure the scholarly impact of articles, authors, or university departments. However, little is known about the factors that determine citation counts for planning-related articles. We find that citation counts in planning vary across pl...
Article
Full-text available
Urban planners and designers believe that the built environment at various geographic scales affects pedestrian activity, but have limited empirical evidence at the street scale, to support their claims. We are just beginning to identify and measure the qualities that generate active street life, and this paper builds on the first few studies to do...
Article
Full-text available
The monitoring of pedestrian activity is challenging, primarily because its traffic levels are typically lower and more variable than those of motorized vehicles. Compared with other on-the-ground observation tools, unmanned aerial vehicles (UAVs) could be suitable for counting and mapping pedestrians in a reliable and efficient way. Thus, this stu...
Article
Guidelines for trip and parking generation in the United States come mainly from the Institute of Transportation Engineers (ITE). However, their trip and parking manuals focus on suburban locations with limited transit and pedestrian access. This study aims to determine how many fewer vehicle trips are generated and how much less parking demand is...
Article
Full-text available
Transit-oriented development (TOD) has gained popularity worldwide as a sustainable form of urbanism by concentrating developments near a transit station so as to minimize auto-dependency and maximize ridership. Existing TOD studies, however, have limits in terms of small sample size and aggregate-level analysis. This study examines various travel...
Article
Full-text available
Transit-oriented development (TOD) has gained popularity worldwide as a sustainable form of urbanism by concentrating developments near a transit station to minimize auto-dependency and maximize ridership. Existing behavior studies in the context of TOD, however, are limited in terms of small sample size, lack of consistency in TOD classification,...
Article
Full-text available
While various observation techniques have been developed to measure park use or park-based physical activity, no study has used unmanned aerial vehicles (UAVs) to do so. Thus, this study develops a new observation method that uses UAVs to survey park-based physical activity. This study tests the inter-rater reliability and criterion validity of the...
Research
Full-text available
Transit-oriented development (TOD) has gained popularity worldwide as a sustainable form of urbanism; it concentrates development near a transit station so as to reduce auto-dependency and increase ridership. Existing travel behavior studies in the context of TOD, however, are limited in terms of small sample size, inconsistent TOD classification m...
Article
Full-text available
Traditional park accessibility studies relying on physical distance have critical limitations, because proximity alone does not predict park use, and contemporary cities struggle with a land shortage for more parks. Efficient, integrated methods of analysing the psychological dimension to park accessibility are scarce. Thus, this study examines fac...
Article
Full-text available
Two primary tools to study park use are surveys and direct observation. Existing methods, however, are limited in terms of considerable costs in both time and money and the personal bias of respondents or observers. These limitations result in a lack of efficient, reliable, and affordable tools to investigate park use. This study explores the relia...

Projects

Projects (5)
Project
This project focuses on whether transit can act as a great equalizer in providing convenient access to regional open space to marginalized populations. We specifically work in the U.S. West, where many large metropolitan areas are located on the edges of national forests, national parks, and other amazing open spaces. We use a combination of GIS mapping, statistical analysis techniques, and qualitative work with marginalized populations.
Project
Objective 1: Establish a framework for multi-scale nature and build a national database The first goal of this project is to define what constitutes accessible natural areas and how to classify them by scale and types. With the operational definition and conceptual framework, we will then build a national database of multi-scale nature in GIS. Objective 2: Explore the relationship between multi-scale nature and travel behaviors The second objective is to examine which scale and types of natural areas are most associated with non-motorized travel such as walking and biking. Statistical models will be built to show the statistical and practical significance of different types of green space. Objective 3: Explore the relationship between multi-scale nature and health outcomes The last aim of this project is to examine which scale and types of natural areas are most associated with multiple health outcomes such as physical activity, obesity, blood pressure, and mental health. Like the Objective 2, statistical models will be built to show the statistical and practical significance of different types of green space.