Social and Behavioral Sciences Commons^™

Traffic-Related Pedestrian Deaths In The Mountain West, 2022, Miguel Soriano Ralston, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet examines data from Smarth Growth America’s report, “Dangerous By Design, 2022,” which reports on traffic deaths throughout the United States. This fact sheet highlights pedestrian deaths as well as deaths among specific groups based on age, race, ethnicity, and media household income between 2016 and 2020 in the Mountain West: Arizona, Colorado, Nevada, New Mexico, and Utah. This fact sheet builds upon a 2020 fact sheet, titled “Traffic-Related Pedestrian Deaths in the Sun Belt Region,” which examined Smart Growth America’s assessment of pedestrian safety for the years 2008 to 2017.

Traffic Deaths In Southern Nevada: Making Roadways Safer For Nevadans, Miguel A. Soriano Ralston

Undergraduate Research Symposium Podium Presentations

Southern Nevada accounts for the majority of traffic deaths in Nevada. It remains one of the highest-ranked areas in pedestrial deaths. The leading types of these fatalities are impared driving, pedestrians, and speeding-related.

Development And Application Of A Safety Index For Transit Stops: A Case Study From Las Vegas, Nevada, Rithesh Shivuni

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research developed a methodology to evaluate safety proximate to transit stops through a Safety Index, identified key factors associated with fatal crashes proximate to bus transit stops, and illustrated the applications of these using a case study based on the Las Vegas metropolitan area in Nevada, USA. The methodology is based on motor vehicle crashes that involve pedestrians recorded in the proximity of transit stops, and the severity of the crash outcomes. It focused on crashes which involved pedestrians that occurred within walking distances of individual transit stops. The severity of the crash outcomes was classified based on the …

The True Cost Of Auto Insurance In The Mountain West, 2022, Annie Vong, Saha Salahi, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet examines data on average annual premiums, percent of income spent on auto insurance, and life events associated with the rising cost of auto insurance in the Mountain West (Arizona, Colorado, Nevada, New Mexico, and Utah). The original report includes data on national averages for auto insurance premiums for all fifty states.

Electric Vehicle (Ev) Infrastructure In The Mountain West, 2020-2021, Olivia K. Cheche, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet highlights data on electric vehicles (EVs) and EV charging stations, as originally reported by Zutobi in The 2022 EV Charging Station Report. This report examines the presence of EV infrastructure across the United States. The Mountain West states of Arizona, Colorado, Nevada, New Mexico, and Utah are considered here.

The Rise Of Southern Nevada As A Cluster For Metropolitan Transit Technology Innovations, Arthur C. Nelson

Policy Briefs and Reports

Southern Nevada is emerging as the nation’s leader in private sector-driven innovations in transportation technologies. From the humble beginnings of a monorail system serving a portion of major hotel and gaming venues along the Las Vegas Strip, now supplemented by an array of people movers, Southern Nevada continues to attract transit innovations in tunneling, Hyperloop, and driverless vehicle delivery technologies. The region may soon anchor a high-speed rail system connecting Southern Nevada to Los Angeles. The purpose of this briefing paper is to frame the nature of this emerging transportation cluster and the opportunities this creates for Southern Nevada to …

Interstate 11: The Road To Prosperity In Nevada, Arthur C. Nelson

Policy Briefs and Reports

Interstate 11 (I-11) offers Nevada a unique opportunity to advance the economic development prospects of one of the state’s most economically challenged areas: Elko and eastern Nevada. Although the state used a qualitative system to choose a western route for I-11, this process may not have considered fully the costs of extending I-11 to Canada in a cost-effective manner or in a manner consistent with I-11 purposes, especially avoiding congested areas. This briefing report reviews the history and purposes of I-11; summarizes the I-11 route options; considers how I-11 might extend to Canada in a way that is consistent with …

Rail Fixed Guideway Systems In Western U.S. Regions, Kelly A. Beavers

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research explores the policy factors influencing the intraregional development of rail transit. For the purpose of this research, policy factors include: institutional arrangements, factors associated with governance, and factors in the policymaking process. The research questions are studied in five case study MSAs within the Pacific West and Mountain West regions of the United States: Phoenix-Mesa-Chandler, AZ; Denver-Aurora-Lakewood, CO; Riverside-San Bernardino-Ontario, CA; Los Angeles-Long Beach-Anaheim, CA; and Portland-Vancouver-Hillsboro, OR. The foundational problems that frame this research are the challenges of urban planning at a regional scale, specifically for transportation. The more specific challenge of transportation planning is situated within …

Improving Pedestrian Safety With The Implementation Of The Demand-Responsive Transverse Rumble Strip As A New Traffic Safety Countermeasure, Md Shakhawat Hossen

UNLV Theses, Dissertations, Professional Papers, and Capstones

The traditional TRS has been extensively used as a traffic calming device to provide cognitive alerts in the form of sound and vibration to drivers. However, TRS always remains fixed on the road and thus exerts cognitive alerts, irrespective of any potential downstream hazards. Moreover, the continuous exposure to rumble strips has been identified as a source of discomfort and annoyance for drivers, which limits its application to potentially useful scenarios. This study explores a rumble strip design with dynamic behavior named as Demand-Responsive Transverse Rumble Strip (DRTRS) in order to address the limitations of static TRS. The study incorporates …

Public Transportation Use By Commuters In The Mountain West, Francisco Reyes, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet synthesizes data on methods and accessibility of transportation for commuters in the Mountain West (Arizona, Colorado, Nevada, New Mexico, and Utah). This fact sheet explores data from the most populous county in each state, using data originally provided by the U.S. Bureau of Transportation Statistics. This dataset includes the type of transportation available (personal automobile, air travel, and maritime travel), the number of resident workers, the percent of these workers that commute to work, and the number of workers commuting within each county.

Analysis Of High-Speed Rail Operations Using Vissim Simulation To Determine Access Charges And The Impact Of Incidents On A Shared Network, Komal Sree Teja Boyapati

UNLV Theses, Dissertations, Professional Papers, and Capstones

Shared High-Speed Rail (HSR) networks are networks where two or more railway operators use the same railway network infrastructure for train operations. The train operations in the shared HSR network can be composed of different types of trains operating at different speeds with varying stops at stations in a network. The interactions between different types of trains in the shared HSR network depends on the characteristics of the network’s infrastructure and train operations, and affect the capacity of the network. When a rail operator who owns the infrastructure allows other operators to access its infrastructure, the additional traffic will lead …

Traffic Scorecard In Mountain West Cities, Kelliann Beavers, Eshaan Vakil, Katie M. Gilbertson, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet presents congestion and mobility trends in 14 Mountain West cities as compiled by INRIX Research and author Trevor Reed, in the Global Traffic Scorecard, March 2020. The INRIX Global Traffic Scorecard examines the impact of vehicle travel on 975 congested cities in the world; this fact sheet focuses on the Mountain West, providing insight on the ranking and impacts of congestion. This fact sheet also supplements INRIX’s scorecard with population data from the U.S. Census Bureau to provide context for the rankings.

Traffic-Related Pedestrian Deaths In The Sun Belt Region, Madison Frazee-Bench, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This Fact Sheet presents data from Smart Growth America on the number of pedestrian fatalities in U.S. states and congressional districts. For the purpose of this fact sheet, the data included focus on the Sun Belt region between 2008 and 2017, highlighting areas with the highest rates of traffic-related pedestrian deaths.

Transportation Affordability In The Mountain West, Saha Salahi, Kelliann Beavers, Elia Del Carmen Solano-Patricio, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This Fact Sheet highlights “The Most and Least Affordable Cities For Public Transit” in the Mountain West. Extracting from Paul Reynolds’ analysis of over 70 transit system across the United States from 2014 to 2015, this fact sheet focuses on data for the 7 municipalities in the Mountain West: Albuquerque, NM; Ogden, UT; Boulder, CO; Phoenix, AZ; Las Vegas, NV, Salt Lake City, UT, and Denver, CO.

The Urban Heat Island Effect In Nevada, Ember Smith, Kaylie Pattni, Caitlin Saladino, William E. Brown

Environment

This fact sheet explores the temperature difference between Nevada cities and their undeveloped surrounding areas using reports by the Urban Land Institute, Climate Central, National Public Radio (NPR), and various governmental organizations. We investigate what “urban heat islands” are, their effects, the correlation between heat and income, and factors that contribute to rising temperatures in Las Vegas, North Las Vegas, Henderson, and Reno.

Foot Traffic & Walkable Urbanism, Ember Smith, Mary Blankenship, Caitlin Saladino, William E. Brown

Transportation & Infrastructure

This fact sheet highlights the performance and expansion of WalkUPs (regionally significant, walkable areas) with a focus on Denver, Los Angeles, Orlando, Phoenix, and Las Vegas as detailed in Foot Traffic Ahead: Ranking Walkable Urbanism in America’s Largest Metros, a report by George Washington University.

Sizing A New Bike Sharing System For The University Of Nevada, Las Vegas, Nesley Orochena

UNLV Theses, Dissertations, Professional Papers, and Capstones

The strategic planning objectives for a novel Bike Sharing Systems (BSS) are to locate the BSS stations, size the stations, and determine the bicycle fleet size, among others. Current guidelines to design BSS programs are tailored to city centers with large coverage areas and high bicycle to population ratios, and thus not directly transferable to a university setting. An ordered probit model was created using data from a university online stated preference survey to determine the key factors that affect the uptake rates for the UNLV BSS program and to estimate the potential demand. The demand analysis was incorporated into …

Effects Associated With The Deployment Of Autonomous And Connected Vehicles: Insights From Las Vegas, Nv, Sarah Dennis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Autonomous and connected vehicles (ACVs) are quickly evolving and becoming part of our transportation systems. Adoption of this technology is largely dependent on public perceptions and comfort. The objective of this study was to evaluate public perceptions of ACVs and gain knowledge regarding potential use and important aspects towards acceptance of ACVs. Specifically, the differences in perceptions of people who have ridden an ACV are compared to those who have not. A stated preference approach was utilized, as this is an emerging technology. Two different survey questionnaires were distributed. The first survey was distributed to participants considered to be members …

Modeling Driver-Pedestrian-Infrastructure Interactions At Signalized Midblock Crosswalks, Boniphace Kutela

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cities and metropolitan areas are increasingly facilitating pedestrians’ movement by the provision of pedestrian walking facilities. As pedestrian traffic increases, the risk of crash involvement increases, especially at midblock locations, where pedestrians are exposed to unsafe interactions with vehicular traffic. To improve pedestrians’ safety at midblock locations, various countermeasures are provided, which include signalized crosswalks. Several studies have analyzed driver-pedestrian interactions, as well as pedestrian-infrastructure interactions at signalized midblock crosswalks. However, more in-depth studies are necessary, due to shortfalls of study assumptions, which have led to the application of improper statistical models, as seen in the literature. Improved models are …

A Framework To Capture Dynamic Traffic Trends From Historical Sensor Data, Carlos Gaviria

UNLV Theses, Dissertations, Professional Papers, and Capstones

The typical approach of increasing infrastructure to alleviate traffic issues such as congestion is becoming unviable due to limited space, high cost, and associated externalities. Control and management strategies using Intelligent Transportation Systems (ITS) seek to maximize the use of existent infrastructure. Many ITS strategies, such as the deployment of information, require or benefit from knowledge about traffic patterns and trends. This study proposes a mathematical programming formulation and solution algorithm that considers multiple time intervals for the estimation of network-wide traffic states and calculation of the corresponding transition probabilities. The proposed solution enables the determination of sections of the …

Distracted Driving In Clark County, Nevada: Analysis Of An Intervention On College Students, Heidi Ann Manlove

UNLV Theses, Dissertations, Professional Papers, and Capstones

Distracted driving is a growing public health concern. Highlighted in the media, local and government agencies and in peer-review literature are increased associations of motor vehicle crash related injuries and fatalities with distracted driving, especially involving youth drivers. The goal of this thesis was to analyze the effects of a distracted driving intervention on college students at University of Nevada, Las Vegas. Quantitative statistical analysis was performed to compare self-reported pre and post-intervention questionnaire responses of the experimental and control groups. Between-group analysis was performed using independent t-tests and ANOVA. Within-group differences were analyzed with Repeated Measures ANOVA (RM-ANOVA) and …

Changing The Focus Of Urban Transport From Congestion To Access, Jeffrey Gutman

Brookings Scholar Lecture Series

The traditional approach of urban transport planners has been to focus on the reduction of traffic congestion. More recently, with the growth of cities worldwide and the ever-present challenge of congestion, transport and urban planners have started to focus on the concept of access as the ultimate goal. How can we ensure and enhance access to jobs, education, commerce, and other services by all segments of the population? This requires a more complementary effort by transport planners and urban planners as well as finance and fiscal experts. The lecture will follow this shift in emphasis, the opportunities it poses, and …

A Business Intelligence Framework For Network-Level Traffic Safety Analyses, Naveen Kumar Veeramisti

UNLV Theses, Dissertations, Professional Papers, and Capstones

Currently, there are both methodological and practical barriers that together preclude a substantial use of theoretically sound approaches, such as the ones recommended by the Highway Safety Manual (HSM), for traffic safety management. Although the state-of-the-art provides theoretically sound approaches such as the Empirical Bayes method, there are still various important capabilities missing. Methodological barriers include among others (i) lack of a theoretically sound approach for corridor-level network screening, (ii) lack of a comprehensive approach for estimation of Safety Performance Functions based on a simultaneous consideration of both crash patterns and associated explanatory variables, and (iii) lack of theoretically sound …

What Is Light Rail And How Can It Benefit Las Vegas?, Robert E. Lang

Brookings Scholar Lecture Series

Brookings Mountain West will lead an analysis of selected rail transportation systems in place and under construction throughout the United States, with an emphasis on the development of light rail systems in America's western cities. The implications for developing a light rail system in the Las Vegas Valley, including the impact on traffic congestion, environmental conditions, and the larger metropolitan economy will be explored. In addition, Keolis, a rail and transit operator in the United States and Canada, will be available to discuss the light rail option from a technological perspective. This summit is brought to you by Brookings Mountain …

The End Of The Road: The State Of Urban Elevated Expressways In The United States, Daniel Waqar

Brookings Mountain West Publications

In a January 2016 meeting, the Clark County Commission heard a proposal from the County Public Works Department about a $200 million plan to build two urban elevated expressways constructed above existing roadways, potentially linking McCarran International Airport with the Las Vegas Strip’s resort corridor. Commissioners lauded the project with a “high degree of confidence” for funding sources and praised the “magnificent way of moving traffic” and “out of the box thinking” of these urban elevated expressways. Yet the positive feedback that County Commissioners showered on this proposal flies in the face of decades of history on urban elevated expressways. …

Safety Analysis Of Freeway Segments With Unobserved Heterogeneity And Second Order Spatial Effects, Eneliko Mujuni Mulokozi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Safety analysis of freeway networks entails the quantification of crash frequency influencing factors which include roadway and traffic characteristics, environmental factors as well as human factors. This quantification can be used to detect locations with large impacts on the occurrence of crashes which in turn assist engineers and planners to improve safety levels of the network. Roadway characteristics are comprised of the physical elements of the road geometry such as section length, median and right shoulders, speed-exchange lanes, the number of main facility as well as geometry of the entrance from and exit to the main freeway facility. Traffic characteristics …

Robust Observability, Control, & Economics Of Complex Cyber-Physical Networks, Shaurya Agarwal

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation deals with various aspects of cyber-physical system. As an example of cyber physical systems, we take transportation networks and solve various problems, namely: 1) Network Observability Problem, 2) Network Control Problem, and 3) Network Economics Problem. We have divided the dissertation into three parts which solve these three problems separately. First part of the dissertation presents a novel approach for studying the observability problem on a general network topology of a traffic network. We develop a new framework which investigates observability in terms of flow information on arcs and the routing information. Second part of the dissertation presents …

Modeling And Analysis Of Pedestrian Flows, Romesh Khaddar

UNLV Theses, Dissertations, Professional Papers, and Capstones

According to the Traveler Opinion and Perception Survey of 2005, about 107.4 million Americans regularly use walking as a mode of transport during their commute, which amounts for 51% of the total American population. In 2009, 4092 pedestrian fatalities were reported nationwide, out of 59,000 pedestrian crashes. This amounts for 12% of the fatalities in the total traffic accidents recorded, and shows an over-representation of pedestrians incidents. Thus, it is imperative to understand the causes behind such statistics, and conduct a comprehensive research on pedestrian walking behavior and their interaction with surroundings.

A lot of researches on pedestrian flows have …

Developing Seamless Connections In The Urban Transit Network: A Look Toward High-Speed Rail Interconnectivity, Tingting Yu

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the past, the studies in the U.S. on high speed rail have been on economic impact. Recently, there are a few studies on the multimodal connectivity at high speed rail stations. High speed rail stations are viewed as hubs that are connected by different modes of public transportation by which passengers are transported to their destinations. How and in which way these different modes are connected to high speed rail stations influence the ridership of high speed rail stations. As the development of high speed rail system in the U.S. has come to the stage for actual design and …

Numerical Simulations Of Traffic Flow Models, Puneet Lakhanpal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traffic flow has been considered to be a continuum flow of a compressible liquid having a certain density profile and an associated velocity, depending upon density, position and time. Several one-equation and two-equation macroscopic continuum flow models have been developed which utilize the fluid dynamics continuity equation and help us find analytical solutions with simplified initial and boundary conditions. In this thesis, the one-equation Lighthill Witham and Richards (LWR) model combined with the Greenshield's model, is used for finding analytical and numerical solutions for four problems: Linear Advection, Red Traffic Light turning into Green, Stationary Shock and Shock Moving towards …