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What Lies Behind Fare Evasion in Curb Parking Behavior? Evidence from Nanjing, China Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Xizhen Zhou, Jie Yan, Xueqi Ding, Yanjie Ji
Frequent incidents of parking fare evasion pose ongoing challenges, placing parking management departments under pressure as a result of reduced parking revenues. The causal mechanisms behind parking fare evasion, as identified in existing studies, remain incompletely explained. To address this gap, our study utilized empirical data from Nanjing, China, employing a random forest methodology to elucidate
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Future of E-Bikes on Public Lands: A Human Factors Field Study at Minute Man National Historical Park Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Jonah Chiarenza, Ian Berg, Kirby Ledvina, Michael Rodriguez, Jared Young
Electric-assist bicycles (e-bikes) are growing in popularity, and their use has increased on public lands managed by federal, state, and local agencies in the United States. Evaluation of e-bike use on public lands is hindered by a dearth of scientific research, as noted in a prior literature review completed by the study team. This paper presents the results of a human factors field study that evaluated
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Model for Evaluating Cracking Performance of Asphalt Pavements with Field Aging Based on IDEAL-CT Parameters Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Aaron Leavitt, Amy Epps Martin, Edith Arámbula
This paper develops a simple asphalt pavement field aging model using IDEAL-CT data from 24 field sections from seven field projects that were monitored for 1–4 years each. Field distress surveys were conducted, and field cores were procured and tested in the laboratory approximately every 12 months for each field section. The model predicts IDEAL-CT parameter l75/ m75 (mm2/kN) from the post-peak load–displacement
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Closing the Cycling Gap: Examining Equity Implications of Montreal’s Bikesharing Network Growth Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Philip Bligh, David Wachsmuth, Maxime Bélanger De Blois, Kevin Manaugh
The worldwide growth of bike-sharing systems demonstrates their mass appeal and success. Montreal’s bike-sharing system, BIXI, opened in 2009, is now one of the largest in the world, and has drastically expanded since being taken over by the City of Montreal in 2014. The system now has over 750 stations up from 459 in 2014. This paper analyzes BIXI’s expansion through the lens of equity, revealing
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Characterization of Expert and Public Perceptions of Bicycle Rolling Stop Laws Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Rhonda Kae Young, Kevin Chang, David Hurwitz, Antonio Roman Campos, Jasmin Woodside
In 2020, Oregon and Washington joined a growing number of states to sign up to new bicycle rolling stop (BRS) legislation that allows bicyclists to yield to pedestrians and motorists when approaching stop sign controlled intersections instead of coming to a complete, unconditional stop. The term “bicycle rolling stop” is synonymous with the “bicycle stop-then-yield” condition or the “Idaho Stop,” as
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Using Deep Neural Networks and Big Data to Predict Microscopic Travel Time in Work Zones Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-27 Yeganeh Morshedzadeh, Suliman Gargoum, Ali Gargoum
Traffic management in work zones is a challenging task that requires a balance between creating a safe environment for workers and minimizing traffic delays. Accurately predicting travel times through work zones is essential for dynamic traffic management and reducing congestion. However, complex interrupted traffic patterns in work zones (also known as construction zones) make this challenging compared
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Dynamic Lane Assignment and Signal-Timing Collaborative Optimization Considering the Effect of Lane Switching Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-26 Jiawen Wang, Yang Feng, Jing Zhao, Cheng Zhang, Yanxin Chen
Dynamic lane assignment (DLA) is an effective method to improve traffic flow and optimize urban road resources. However, lane switching can disrupt traffic under dynamic control due to clearance time and driving characteristics. Traditional rule-based methods hinder the selection of optimal schemes for DLA systems. On-site data analysis shows that lane switching increases saturated headway by 18.4%
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Analysis of Pore Water Pressure Effect in Asphalt Patch Failure: An Integrated Modelling and Experiment Study Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-25 Xiao Chen, Hao Wang
Moisture has been widely accepted as the main cause of asphalt patch failure, while the investigation of pore water pressure (PWP) in asphalt patch is limited. This research investigated the PWP generated in asphalt patch and quantified its impact on mechanical performance considering the inadequate compaction of asphalt patch. A hydro-mechanical model was first developed to analyze the PWP under field
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Bikeshare–Metrorail Integration in Washington, D.C.: What are the Characteristics of Neighborhoods that Encourage Capital Bikeshare Trips to and from the Metrorail? Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-25 Md Shazalal Tushar, Ralph Buehler
Bikeshare has gained popularity worldwide and can serve as a first mile/last mile feeder for public transport. In many bikeshare systems, docking stations near a metrorail station are popular trip origins and destinations and bikeshare can help increase the ridership of the metrorail system as well. The goal of this study is to identify the determinants of bikeshare trips between neighborhood stations
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Developing Tree-Based Machine Learning Models for Estimating the Pile Setup Parameter for Clay Soils Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-22 Mohammad Moontakim Shoaib, Murad Y. Abu-Farsakh
Piles driven into cohesive soils usually experience increases in capacity with time, known as pile setup phenomenon. Several empirical methods have been developed to estimate the setup parameter (A), such as the well-known Skov and Denver equation. Parameter A is crucial in predicting pile setup behavior. In this study, tree-based machine learning (ML) models such as random forest (RF) and gradient
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Experimental Behavior of a Steel Girder–Stringer–Floorbeam Bridge Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Matthew Yarnold, Andrew Moore, Craig Henderson, Tim Huff, Rebecca Hayworth
The presented case study summarizes a quick-response project for the Tennessee Department of Transportation (TDOT), which focused on the steel-stringer behavior for a girder–stringer–floorbeam bridge. TDOT was confronted with relatively low stringer load ratings for many of their 31 similar structures. As a result, TDOT initiated this field study to ultimately produce refined load ratings. This information
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Multi-Type Traffic Conflict Identification at Signalized Intersections Based on LiDAR Point Cloud Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Lai Zheng, Shuyu Fan, Shuanghu Ma, Hansheng Jiao
Traffic conflicts have been widely used for proactive road safety evaluation, and this study develops methods to automatically identify different types of traffic conflict based on LiDAR point cloud data. With 10 h of data collected from a signalized intersection in Harbin, China, trajectories of motorized vehicles, bicycles, and pedestrians were extracted, and methods to handle the issues of trajectory
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Evaluation of Rheological and Failure-Based Recycling Agent Optimization Methods Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Hamzeh F. Haghshenas, Adrian Andriescu, Raj Dongre, Varun Veginati, David Mensching, Jack Youtcheff
This study examined rheological and failure-based approaches for the optimization of two bio-based and two petroleum-based recycling agents (RAs). The results showed that optimizing the RAs based on the performance grade (PG) approach did not fully achieve the rheological and failure characteristics of the target asphalt binder. This was observed for both a bio-based and a petroleum-based RA. The asphalt
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Concrete Pavement Design Analysis Using AASHTOWare Pavement Mechanistic-Empirical Design Software Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Xingdong Wu, Seyedarmin Motaharitabari, Mustaque Hossain, Stacey Elizabeth Kulesza, Nat Velasquez
Local calibration of pavement performance models embedded in the AASHTOWare Pavement Mechanistic-Empirical Design (PMED) software may be needed to implement this design methodology. A recent survey showed that, despite local calibration, several state highway agencies in the U.S. are using the American Association of State Highway Transportation Officials (AASHTO) Guide for Design of Pavement Structures
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Application of Satellite-Based Remote Sensing for the Management of Pavement Infrastructure Assets Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Amit Gajurel, Anand J. Puppala, Nripojyoti Biswas, Hiramani Raj Chimauriya
The long-term monitoring of transportation infrastructure assets at a lower cost and with short mobilization time is of significant interest to both state and federal transportation agencies in the U.S. Because of the significant improvement in spatial and temporal resolution of synthetic aperture radar (SAR) remote sensing systems and a notable reduction in the cost of data acquisition, SAR has now
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Impact of Clay Contamination on Rutting Performance of Asphalt Mixtures Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Sharmila Afsha, Suhail R. Vaid, Miguel A. Montoya, Imad Abdallah, Soheil Nazarian
Natural sands improve the sustainability of asphalt mixtures by enhancing workability and lowering the required asphalt binder and manufactured fine aggregates. One of the primary concerns with incorporating natural sands in a mixture is the potential for clay contamination. Harmful active clays swell when in contact with moisture and diminish the bonding between the aggregate and asphalt binder. This
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Real Entrance Capacity of a Single-Lane Roundabout Owing to Congestion on the Circular Lane Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-21 Werner Brilon, Ning Wu
In contrast to conventional methods, this study took a holistic approach to investigating roundabout capacity. Conventional methods aim to identify the capacities of each single entrance, without any consideration of mutual interactions between all the entrances and exits of the roundabout. This study investigated the interrelationships between traffic operations at the elements of a single-lane roundabout
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Study on the Enrichment of Pavement Marking Width and Retroreflectivity on Elderly Drivers’ Safety Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-19 Yanyan Guan, Jiangbi Hu, Ronghua Wang
Drivers’ visual function and cognitive ability deteriorate with age, and road marking improvements can better meet the driving safety and comfort needs of elderly drivers. To provide an optimal solution for marking setup and management for a large elderly community, the specific enrichment of marking width and retroreflective luminance coefficient on the driving safety of elderly drivers is investigated
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Identifying Corridor-Level Safety Improvements for Urban and Suburban Arterials in Florida Within a Safe System Framework Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-19 John McCombs, Haitham Al-Deek, Adrian Sandt, Nizam Uddin, Grady Carrick
Many agencies have adopted a Safe System approach to improving roadway safety. The Highway Safety Manual (HSM) provides methods for assessing safety, but these models are site-specific and require extensive data, making them difficult to use at large scales. This paper develops a corridor-level methodology for holistically looking at corridors made of consecutive intersections and roadway segments
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Practical Application of Digital Twins for Transportation Asset Data Management: Case Example of a Safety Hardware Asset Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-19 Ashtarout Ammar, Francesca Maier, William S. Pratt, Elaine Richard, Gabriel Dadi
Digital Twins have emerged as a transformative technology with immense potential for enhancing asset data management in various industries. The transportation industry relies heavily on properly functioning and maintaining safety hardware assets, such as crash barriers, guiderails, and road signs, among others, to ensure the safety of road users. However, traditional asset data management practices
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Measurement and Modeling of Thermo-Hydro-Mechanical Behaviors of Frozen Clays: Frost Susceptibility and Compressibility Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-15 Weiling Cai, Cheng Zhu, Wade Lein
The risk of geohazards associated with frozen subgrades is well recognized, but a comprehensive framework to evaluate frost susceptibility from microstructural characteristics to macroscopic thermo-hydro-mechanical (THM) behaviors has not been established. This study aims to propose a simple framework for quantitatively assessing frost susceptibility and compressibility in frozen soils. A systematic
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Dynamic Pricing and Route Guidance: A Multi-Agent System for Effective Parking and Traffic Management Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-15 Sana Ben Hassine, Elyes Kooli, Rafaa Mraihi
In a city center that is usually flooded with traffic, finding a parking space is a challenge for most commuters. Searching for parking generates additional urban traffic, increases energy consumption and vehicle emissions, and wastes time. This study examines how parking systems can be used as an effective tool for reducing traffic congestion. It proposes a new, smart approach to parking using real-time
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Use of Distributed Fiber Optic Sensors for the Monitoring of an Accelerated Pavement Test Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-15 Paulina Leiva-Padilla, Xavier Chapeleau, Mai-Lan Nguyen, Juliette Blanc, Samir Allam, Emmanuel Loison, Pierre Hornych
The need to develop more efficient pavement management systems has driven continuous improvement in structural health monitoring (SHM) systems for road infrastructures. Factors such as low energy consumption, minimal disruption (small-sized and lightweight devices), resistance to environmental conditions, high durability, and sensitivity are some of the possible improvements worthy of exploration.
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Development of Multiple Discrete-Continuous Extreme Value Model with Non-Monotonic Utilities: Formulation and Application to Outdoor Non-Mandatory Time-Use Decisions Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-15 Mengyi Wang, Xin Ye
This paper further explores multiple discrete-continuous extreme value (MDCEV) models. MDCEV models are widely used for time-use analysis because they can accommodate the diminishing marginal utility with respect to time consumption and benefit from simple closed-form likelihood expressions for estimation, while considering the overall constraints of time resource. However, all of the existing models
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Greenhouse Gas Emissions Inventory from Roadway Construction: Case Study for the Washington State Department of Transportation Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-15 Milad Zokaei Ashtiani, Monica Huang, Meghan C. Lewis, Jordan Palmeri, Kathrina Simonen
Recent emphasis on actions to reduce greenhouse gas (GHG) emissions has pushed many state departments of transportation (DOTs) to develop carbon accounting practices compatible with their current standard data collection and storage guidelines. Once accurate and reliable accounting of GHG emissions is established, strategies can be formed that could help mitigate the adverse environmental impacts of
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Using a Modified Delphi Approach to Explore California’s Possible Transportation and Land Use Futures Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-14 John Gahbauer, Jacob L. Wasserman, Juan Matute, Alejandra Rios Gutierrez, Brian D. Taylor
Many methods exist for engaging experts in interactive groups to explore, clarify, and/or decide on various issues. In an investigation of four possible future scenarios concerning transportation and land use in California, we developed a novel “hybrid policy Delphi” method for use with a panel of 18 experts. We applied it to explore the policies and practices that would likely lead to each of the
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Two-Stage Allocation Model for Parking Robot Systems Using Cellular Automaton Simulation Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-09 Xun-You Ni, Daniel(Jian) Sun, Jing Zhao, Qian Chen
With increasing vehicle ownership and utilization in urban areas, parking robot systems have become a promising tool to cope with both the parking difficulties and hazards in parking lots. With assistance of the parking robot systems, vehicles are not human-operated in parking lots but fetched by a parking robot to the target places. This study starts by depicting the parking robot allocations and
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Geographic Information System-Based Comprehensive Shared Micromobility Station Siting Optimization for Small Urban Areas Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-09 Hannah DeBruin, Alireza Khani
Shared micromobility travel modes such as dockless e-scooters and bikeshare programs have become increasingly popular in the U.S. in the last decade because of their potential to improve multi-modal accessibility within communities. Smaller urbanized areas with lower population densities and fewer resources for system planning, operation, and maintenance present unique challenges with siting optimal
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Three-Dimensional Finite Element Modeling of Spray-Applied Pipe Liners Repaired Corrugated Metal Pipes Buried Under Shallow Cover Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-08 Samrat Raut, Mehran Azizian, Hiramani Raj Chimauriya, Amin Darabnoush Tehrani, Mohammad Najafi, Xinbao Yu
Corrugated metal pipes (CMPs) corrode over time. To maintain structural performance, deteriorated CMPS must be replaced or rehabilitated. Spray-applied pipe liners (SAPLs) are one of the quickest ways to rehabilitate deteriorated CMPs among other ways. Only a few lab tests and finite element studies from the past have been done on this new method. The calibration of a three-dimensional (3D) full-scale
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Exploring the Commuting Decision-Making Behavior of Low-Income Groups Based on Cumulative Prospect Theory Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-08 Qingqiao Geng, Yu Wang, Shu Cui, Jiali Wang
Based on cumulative prospect theory, this study proposes a decision-making model to reveal the commuting behavior of low-income groups under uncertain conditions. Considering the commuting characteristics of this group, travel economic cost is incorporated into the model. The decision-making behavior of low-income groups under different travel scenarios is analyzed to acquire the priority of commuting
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Experimental Study on Physical and Mechanical Properties of Lightweight Cellular Concrete Specimens Cast in Field and Laboratory Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-08 Yu-qiu Ye, Jie Han, Matt O’Reilly, Brad Dolton, Robert L. Parsons
This paper presents a series of laboratory tests for evaluating the material properties of Lightweight cellular concrete (LCC) with different cement-to-fly ash ratios and at different ages. LCC specimens used in this study were cast in the field and/or laboratory. Large and small direct shear box tests were used to determine the shear strengths of LCC specimens. The test results show that the average
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Influence of Specimen Geometries on the Viscoelastic Properties of Bituminous Mixtures in Torsion Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-08 Greena Maria Sunny, J. Murali Krishnan
A standard test method for determining the linear viscoelastic properties of bituminous mixtures in torsion prescribes the use of a dynamic shear rheometer. The method uses a prismoidal specimen (rectangular cross section) sliced from a Superpave gyratory compacted sample. However, the geometry utilized in the standard is a non-axisymmetric cross section, which leads to the development of warping stress
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Assessing the Impact of Preprocessing and Conversion Technologies on the Sustainable Aviation Fuel Supply from Forest Residues in the Southeast U.S.A. Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-07 Pengzhen Li, T. Edward Yu, Carlos Trejo-Pech, James A. Larson, Burton C. English, David N. Lanning
Forest residues have been suggested as potential feedstock for sustainable aviation fuel (SAF) production through different pathways. However, the bulky density and scatter distribution require efficient size-reduction processes to enhance the feedstock supply. Thus, this study analyzes the impact of alternative preprocessing and conversion technologies on the SAF supply chains from logging residues
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Developing Representative Test Specimen Conditions for Rutting Mechanical Test Methods of Airfield Pavements Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Nicole G. Elias, Elie Y. Hajj, Adam J. T. Hand, Fujie Zhou, Thomas Bennert, Christopher Decker, Harsh Patel
The Federal Aviation Administration (FAA) is considering implementation of a balanced mix design (BMD) method for asphalt concrete (AC) of airfield pavements in a future specification update. One of the key elements toward implementing BMD, is setting adequate conditions for laboratory mechanical testing that best simulate actual field conditions. In this study, representative air void (AV) levels
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Using Geographically Weighted Models to Explore Temporal and Spatial Varying Impacts on Commute Trip Change Resulting from COVID-19 Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Saeed Saleh Namadi, Behnam Tahmasbi, Asal Mehditabrizi, Aref Darzi, Deb Niemeier
COVID-19 deeply affected people’s daily life and travel behaviors. Comprehending changes in travel behavior holds significant importance, making it imperative to investigate the influential factors of sociodemographics and socioeconomics on such behavior. This study used large-scale mobile device location data at the U.S. county level in the Washington, D.C., Maryland, and Virginia (DMV) area, U.S
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Choice Behavior and Diffusion Impact Analysis of Connected and Autonomous Vehicle Travelers with Managed Lanes Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Yumeng Lei, Xumei Chen, Daqian Wan, Zhenliang Ma, Lei Yu
With the accelerated integration of connected and autonomous vehicles (CAVs) into transportation systems, such vehicles have evolved rapidly. Emerging studies have focused on the considerations influencing travelers’ acceptance of CAVs and the factors contributing to travel choice intention. However, the different reasons for the diffusion of CAVs and the associated trends in relation to this are key
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Edge-Computing Oriented Real-Time Missing Track Components Detection Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Youzhi Tang, Yi Wang, Yu Qian
Track integrity is critical for railroad safety. Traditional track inspections are either labor-intensive or require centralized data processing, making them susceptible to human error and lapses between data collection and situation awareness. The advent of deep learning and computer vision provides promising potential for automated track inspections. However, few existing systems are edge-computing
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Load Carrying Mechanism of Geocell Reinforced Embankment on Soft Soil Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Rupam Saikia, Sujit Kumar Dash
This paper investigates the influence of geocell reinforcement on the load carrying mechanism of embankments over soft soil. Using a geocell mattress beneath an embankment on soft soil, the size of the rupture zone in the foundation bed is found to have increased significantly, leading to increase in the mobilized shear resistance, and giving rise to enhanced bearing capacity. While the unreinforced
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Reliability Analysis of Highway Network Travel Time Based on Information Entropy Model and Electronic Toll Collection Data Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Linwei Li, Yinli Jin, Peng Gao, Lairan Wang, Libing Liu
Travel time reliability (TTR) holds significant importance as an evaluation index in the transportation industry. To simplify TTR calculations at the network level in engineering applications, this paper re-examines the highway network from the perspective of system theory, regards it as a road network system consisting of multiple subsystems, and proposes a framework for calculating the TTR of the
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Evaluation Framework for Multi-Modal Public Transport Systems Based on Connectivity and Transfers at Stop Level Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Charalampos Sipetas, Zhiren Huang, Alonso Espinosa Mireles de Villafranca
Multi-modal public transport (PT) networks within metropolitan areas are often characterized by complexity resulting mainly from their infrastructure, design, operations, and demand. This complexity leads to a significant amount of effort on behalf of the transit agencies to properly evaluate their performance at certain locations and proceed with improvements. This study proposes a methodology based
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Walkable and Safe Route to Transit for Pedestrians in Greater Montréal: An Environmental Justice Approach Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-04 Philippe Brodeur-Ouimet, Marie-Soleil Cloutier
The experience of walking to transit stops plays a critical role in the use of public transportation. Having a safe and walkable environment for this part of the trip is even more important for vulnerable population groups, who depend more heavily on public transportation. The aim of this paper was to evaluate first mile/last mile walkability and road risks in the Montréal metropolitan area using an
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Multi-Modal Urban Traffic Transfer Schedule Timetable Bi-Objective Optimization: Model, Algorithm, Comparison, and Case Study Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-03-01 Feng Tian, Jie Liang, Ruihan Chen
The optimization of the connection between urban rail transit and the bus is an essential issue that benefits passenger travel and the urban structure and has social benefits, which can be realized by reasonably adjusting the bus departure schedule. This study is necessary because the development status quo of China’s urban transportation network planning is unreasonable, travel efficiency is not high
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Novel Speed-Flow Model Based on Queuing Theory and Its Potential Application in Highway Capacity Guidelines Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-29 Ning Wu, Justin Geistefeldt
Speed-flow relationships are incorporated in many highway capacity guidelines such as the U.S. Highway Capacity Manual (HCM) and the German Highway Capacity Manual (HBS). The speed-flow relationship can be used to predict the operating speed depending on the traffic volume. Based on traffic-flow theory, many models for the speed-flow relationship under fluid and congested traffic conditions have been
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Driving Distraction Evaluation Model of In-Vehicle Infotainment Systems Based on Driving Performance and Visual Characteristics Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-28 Binjue Wang, Qing Xue, Xiaonan Yang, Xuanzhu Wan, Yahui Wang, Cheng Qian
With the rapid development of automotive electronic technology, increasingly car enterprises choose to carry touchscreen in-vehicle infotainment systems (IVISs) in smart cars. The integration of navigation, music, telephone, and other functions into touchscreen IVISs has greatly enriched the driving experience. However, the design of touchscreen IVISs, which lacks consideration of driver human–computer
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Large-Scale Triaxial Testing of Geogrid-Stabilized Field-Sourced Fouled Ballast Under Simulated Progressive Rainfall Wetting and Cyclic Loading Conditions Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-28 Shihao Huang, Yu Qian
Railroad track ballast composed of uniformly graded crushed aggregate is susceptible to fouling from substances like ballast fines degraded during track service, coal dust, clay, and sand. Fouling reduces the drainage capacity of ballast, often leading to water accumulation and subsequent performance degradation. Fouled ballast with high moisture content experiences excessive settlement and could benefit
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Fusion-GRU: A Deep Learning Model for Future Bounding Box Prediction of Traffic Agents in Risky Driving Videos Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-28 Muhammad Monjurul Karim, Ruwen Qin, Yinhai Wang
To ensure the safe and efficient navigation of autonomous vehicles and advanced driving assistance systems in complex traffic scenarios, predicting the future bounding boxes of surrounding traffic agents is crucial. However, simultaneously predicting the future location and scale of target traffic agents from the egocentric view poses challenges because the vehicles’ egomotion causes considerable field-of-view
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Evaluating the Effectiveness and Transferability of a Data-Driven Two-Region Perimeter Control Method Using Microsimulation Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-28 Dongqin Zhou, Vikash V. Gayah
Regional perimeter control based on the existence of macroscopic fundamental diagrams has been widely studied as an effective tool to regulate traffic and prevent oversaturation in dense urban areas. Significant research efforts have been performed concerning the modeling aspects of perimeter control. More recently, data-driven techniques for perimeter control have shown remarkable promise; however
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Evaluating the Effectiveness of Speed Cameras on Philadelphia’s Roosevelt Boulevard Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-28 Erick Guerra, Christopher Puchalsky, Nata Kovalova, Yihong Hu, Qi Si, Jiamin Tan, Gillian Zhao
This paper employs Bayesian negative binomial and Poisson models to examine the effectiveness of speed cameras at reducing crashes, injuries, and fatalities on and immediately around Roosevelt Boulevard, a particularly dangerous urban arterial in Philadelphia, PA. Camera installation also coincided with rapidly changing traffic safety outcomes throughout the summer after COVID-19 lockdowns and protests
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Travel Satisfaction of Bus Rapid Transit Users in A Developing Country: The Case of Bhopal City, India Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Aditya Saxena, Binayak Choudhury, Premjeet Das Gupta
India's burgeoning population has led to an increased demand for transportation services, particularly in urban areas. To address the growing mobility needs and mitigate the adverse effects of personal vehicle usage, efficient public transit services are imperative. Several Indian cities have implemented bus rapid transit (BRT) systems to address this problem, but ridership for the majority of the
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Segmenting and Exemplifying Potential Flex Route Transit Adopters Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Jingcai Yu, Zijuan Yin, Yan Zheng, Rongrong Guo, Wenquan Li
Market segmentation has been considered an essential tool for evolving technology to examine for extensive adoption. Flex route transit (FRT) is a personalized transportation mode, which is expected to grow in the future. Therefore, FRT adoption has sparked a significant amount of research curiosity. This study endeavors to examine and identify potential FRT adopters considering attitudinal factors
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Traffic Signal Systems Solutions Toolbox: A Case Study from Pennsylvania Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Nemanja Dobrota, Burak Cesme, Stephen Gault, Shannon Warchol, Rafiur Rahman, Nagui Rouphail
The selection of the appropriate traffic signal systems solution (e.g., fully actuated [free] control, pretimed control, adaptive traffic signal control, traffic responsive plan) is critical to ensuring efficient traffic operations. The success of any selected solution is largely dependent on corridor characteristics and the nature of the experienced problems on the corridor. In addition, agency capability
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Characteristics of Geogrid-Reinforced Rubber-Coated Ballast under Cyclic Loading Conditions Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Md Naquib Alam, Syed Khaja Karimullah Hussaini
Rubber-coated ballast (RCB) is a newly invented ballast made up of natural aggregates coated with recycled crumb rubber with the help of polyurethane binder. The deformation, degradation, resilience, damping, and acceleration time response for unreinforced (UR) and geogrid-reinforced (GR) RCB-natural ballast mix were explored under cyclic loading conditions. The results from the cyclic loading tests
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Effects of Speed Feedback Trailer Positioning and Police Enforcement on Vehicular Speeds in Freeway Work Zone Lane Closures Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Md Shakir Mahmud, Hisham Jashami, Megat Usamah Megat Johari, Nischal Gupta, Anshu Bamney, Timothy J. Gates, Peter Savolainen
This field study sought to evaluate select strategies for improving compliance with work zone speed limits, which included a speed feedback trailer (SFT) and active police enforcement. The initial evaluation included an SFT positioned at the start or end of the taper within a freeway single-lane closure to determine which position provided the most favorable speed reductions. Positioning the SFT near
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What Are the Most Important Items to Inspect on a Mechanically Stabilized Earth Wall? A Summary from 30 Experts Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-27 Stacey Kulesza, Robert L. Parsons, Jie Han
Geotechnical asset management (GAM) demonstrates stewardship, provides data and processes for making informed decisions, and can enable financial savings throughout the geotechnical life cycle. For a GAM program to be effective, a well-defined inspection system for evaluating the current condition of assets is required. If the process contains a substantial number of inspection items, individual items
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Role of Fly Ash in the Repair Interface between Magnesium Phosphate Cement and Cement Concrete Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-26 Fei Liu, Baofeng Pan, Changjun Zhou, Zengtao Chen, Baomin Wang, Dong Sha, Chengcheng Fan
This paper examines a rapid repair material for cement concrete pavement based on magnesium phosphate cement (MPC) blended with fly ash (FA). Three kinds of stress forms for rapid repair of Portland cement concrete pavement (PCCP) were evaluated and the role of FA in the repair interface was studied. The optimal mixture ratio of FA-MPC mortar was determined, and the compressive and flexural strength
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Data-Driven Framework for Generating Travelers with Demographic-Activity-Travel Information Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-26 Jianhong Ye, Yifan Hu, Lei Gao
Transportation demand models and traffic simulations, particularly in the realm of innovative activity-based models, necessitate comprehensive demographic-activity-travel data. Although cell phone data holds the potential to provide detailed insights into activity-travel patterns, transportation planners often resort to aggregate data, constrained by limited socio-demographic attributes because of
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Multimodal Deep Learning for Estimating Lane-Level Urban Traffic by Fusing Closed-Circuit Television and Dedicated Short-Range Communication Data Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-26 Jin Hong Min, Hosuk Shin, Dong-Kyu Kim
Seamless, accurate, and reliable traffic information is critical for planning and operational strategies in traffic management. Urban networks are increasingly being equipped with various types of detectors to collect continuous traffic data. However, the widespread installation and management of these detectors at all intersections and road sections are limited by cost constraints and various problems
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Measuring Effectiveness of Metro-Based Underground Logistics System in Sustaining City Logistics Performance During Public Health Emergencies: A Case Study of Shanghai Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-26 Longlong Hou, Wanjie Hu, Yicun Chen, Jianjun Dong, Rui Ren, Zhilong Chen
City logistics performance (CLP) is being increasingly challenged by public health emergencies and relevant mobility restriction policies. This paper introduces a novel urban contactless delivery measure incorporating the metro-based underground logistics system (M-ULS) and “Pandemic Thruport” (P-Thruport) concept to encounter logistics service failure during pandemic outbreaks. This solution is proposed
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Multi-Agent Deep Reinforcement Learning for Multi-Lane Freeways Differential Variable Speed Limit Control in Mixed Traffic Environment Transp. Res. Rec. J. Transp. Res. Board (IF 1.7) Pub Date : 2024-02-26 Lei Han, Lun Zhang, Weian Guo
In advanced freeway traffic management systems, variable speed limit control (VSLC) is frequently discussed as one of the control measures. However, in a mixed traffic environment where connected and automated vehicles (CAVs) and human-driven vehicles coexist, the existing VSLC strategies for multi-lane freeways have two major shortcomings: the lack of precise control at the individual vehicle level