Engineering Commons^™

Experimental Investigation Of The Performance Of A Hybrid Self-Healing System In Porous Asphalt Under Fatigue Loadings, Shi Xu, Liu Xueyan, Amir Tabakovic, Erik Schlangen

Articles

Self-healing asphalt, which is designed to achieve autonomic damage repair in asphalt pavement, offers a great life-extension prospect and therefore not only reduces pavement maintenance costs but also saves energy and reduces CO2 emissions. The combined asphalt self-healing system, incorporating both encapsulated rejuvenator and induction heating, can heal cracks with melted binder and aged binder rejuvenation, and the synergistic effect of the two technologies shows significant advantages in healing efficiency over the single self-healing method. This study explores the fatigue life extension prospect of the combined healing system in porous asphalt. To this aim, porous asphalt (PA) test specimens with …

The Impact Of Vision Zero Initiatives On Road User Safety In New York City, Alex C. Phares, Md Amdad Hossen, Kakan Dey

Mountaineer Undergraduate Research Review

Despite modern vehicles, improved transportation infrastructure, and advanced traffic signals, more than 36,000 Americans die from traffic crashes every year1. With the goal of reducing traffic fatalities to zero, New York City (NYC) adopted Vision Zero (VZ) initiatives in 2014 and has deployed 23 categories of countermeasures, ranging from road improvements to training and community outreach programs2. In this research, trend analysis and hypothesis tests were done on NYC traffic fatality data for three main categories of roadway users: motorists, cyclists, and pedestrians, to evaluate the success of the VZ initiatives. It was found that annual fatalities of both motorist …

Incorporating Conditional Ss-Mean Based Equity Metric In Coverage Based Facility Location Problems, Rohan Sirupa

Dissertations and Theses

A classical maximum coverage facility location problem (MCLP) tries to maximize the coverage by serving all possible demands within the specified coverage radius. Depending on the applications, several families of MCLP variants have been developed - each with its unique set of additional constraints. One specific application is locating Emergency medical service (EMS) units. EMS units such as ambulances or drones with emergency supplies are located using models such as the maximum expected survival location problem (MEXSLP). However, a classical MEXSLP model tends to locate EMS units near densely populated regions, resulting in increased response times for lowly populated regions. …

Blacow Road Improvement Plan, Nishita Kandikuppa

City and Regional Planning

Providing safe and accessible entrances to schools, especially elementary, middle, and high schools where children are below the age of 18, should be of utmost priority to cities. Providing wide sidewalks, painted bicycle lanes and continental crosswalks (with the lateral lines) are just basic infrastructure improvements that can be made within the vicinity of a school. However, due to lack of funding or attention from the city departments, many school entryways are being neglected and the direct impact of this is increased collisions among students, drivers, and bicyclists. My senior project studied one such school in Fremont, California where the …

Integration Of Utility Engineering, Coordination, And Highway Design, Tim Taylor, Roy Sturgill, Kenny Franklin, Jeff Jasper, Shani A. Montes Victorio

Kentucky Transportation Center Research Report

State transportation agencies (STAs) strive to deliver highway projects on time and on budget. Utility relocations are frequently cited as a primary reason for delays. This report describes a new approach for enhancing the alignment of utility coordination and design. Researchers crafted this new approach based on the findings of a literature review, an evaluation of how utility coordination milestones and project development milestones are currently aligned at the Kentucky Transportation Cabinet (KYTC), and the experiences of other STAs. KYTC should use this guidance to facilitate implementation of the new approach and an associated Utility Coordination Training and Certification Program. …

Understanding And Efficiently Managing Right-To-Take Challenges In Kentucky, Pam Clay-Young, Steve Waddle, Bryan Gibson

Kentucky Transportation Center Research Report

Executive Summary

Kentucky constitutional and statutory law requires that a fair process be in place to let a property owner challenge a condemnor’s right to acquire private property, including a right to appeal the initial decision. Property acquired by a condemnor must be for public use, and property owners have the right to an immediate and expedited hearing on right-to-take. Two of these requirements will remain in place regardless of statutory revisions: the requirement that property must be needed (i.e., not arbitrary) for public use, and the right to one appeal. Only an amendment(s) to the Kentucky Constitution would alter …

Analysis Of Truck Weight Limit Regulations, P. Gayle Marks, Jon Wilcoxson, Bryan Gibson, Chris Van Dyke, Jennifer Walton, Doug Kreis

Kentucky Transportation Center Research Report

In the United States vehicle weight limits are set by laws and regulations enacted at the state and federal levels. On interstates the maximum allowable gross vehicle weight is 80,000 lbs. States use different rules for permitting overdimensional and overweight (OD/OW) vehicles, and most have carve outs that exempt specific commodities from standard weight limits. This results in a complex legal and regulatory landscape that enforcement personnel can find difficult to negotiate. This report discusses strategies that can be adopted in the state of Kentucky to improve enforcement and mitigate infrastructure damage caused by OD/OW loads. After presenting a thorough …

Investigation Of Workflow Processes And Best Practices In Kentucky’S Cdl Program, Valerie Keathley-Helil, Andrew Martin, Brian Howell, Jennifer Walton

Kentucky Transportation Center Research Report

Kentucky’s Division of Driver Licensing maintains the driver history records for all licensed drivers in Kentucky. It serves as the state driver licensing agency and is the locus for meeting the federal CDL requirements under 49 CFR 384. Kentucky relies on FMCSA’s Commercial Driver’s License Program Implementation (CDLPI) grant funding to subsidize salaries for Federally Funded Temporary Labor (FFTL). FFTLs verify and process documents as well as field phone calls from customers. DDL administrators say they cannot meet the CDL reporting timeframes without FFTL labor, but the agency is not able to fund temporary or full-time staff members on its …

Evaluation Of The Kentucky Transportation Cabinet’S Maintenance Rating Program, Bryan Gibson, Rachel Catchings, Vinh Dao, Doug Kreis

Kentucky Transportation Center Research Report

The Kentucky Transportation Cabinet (KYTC) relies on its Maintenance Rating Program (MRP) to systematically measure conditions on state-owned roads and rights of way. Every year, the Cabinet evaluates 300-400 road segments in each of its highway districts. Segments receive aggregate scores ranging from 0 to 100, with the target score being 80. This report appraises the MRP and discusses potential strategies for its improvement. Compared to asset management programs established at other state transportation agencies, KYTC’s performs quite well. Between 1999 and 2019, MRP data show that scores improved across all road types. In 2011, the average score for all …

Updating Congestion Performance Measures For Shift 2022, Mei Chen, Xu Zhang, Eugene Antwi Boasiako, Fahmida Rahman

Kentucky Transportation Center Research Report

Executive Summary

The Kentucky Transportation Cabinet (KYTC) has adopted a data-driven decision-making process to allocate funds for highway improvement projects. This process — Strategic Highway Investment Formula for Tomorrow (SHIFT) — requires that candidate projects be scored on five critical metrics: safety, asset management, congestion, economic growth, and benefit/cost analysis. The congestion metric is vehicle hours of delay (VHD), which was first developed for the SHIFT 2020 cycle (1). For SHIFT 2022, VHD is estimated using probe speed data acquired for 166,527 directional miles of Kentucky highways.

This report summarizes analyses performed using 2018-2019 HERE speed data, and …

Economic And Environmental Benefits Of A Reduced Roadside Mowing Program For Kentucky Highways, Chris Van Dyke, Candice Wallace, Doug Kreis

Kentucky Transportation Center Research Report

A growing number of state departments of transportation (DOTs) are introducing conservation mowing programs that aim to reduce the frequency of roadside mowing while expanding the footprint of pollinator habitat. Wanting to get a better handle on the utility conservation mowing, the Kentucky Transportation Cabinet (KYTC) funded this study to explore the economic and environmental benefits that accrue from mowing less often. This report presents a synthesis of best conservation mowing practices based on a review of landscape management policies, programs, and procedures in use at 15 state DOTs. Most agencies divide the roadside into discrete management zones. While they …

Enhancement Of Asphalt Performance By Graphene-Based Bitumen Nanocomposites, Sara Moghtadernejad, Ehsan Barjasteh, Ren Nagata, Haia Malabeh

Mineta Transportation Institute

As the State of California continues to grow, demand for enhanced infrastructure such as roadways and highways escalates. In view of the current average highway lifespan of 15–20 years, the improvement of asphalt binders leads to material sustainability by decreasing required maintenance and increasing the lifespan of roadways. In the present investigation, enhancement of asphalt binder properties was achieved by different methods of mixing varying compositions of graphene nanoparticles with an SBS polymer and asphalt binder. Additionally, experimental evaluation and comparison of the rheological and mechanical properties of each specimen is presented. Graphene nanoparticles have attracted great curiosity in the …

Robotic Parking Technology For Congestion Mitigation And Air Quality Control Around Park & Rides, Mahdi Yoozbashizadeh, Forouzan Golshani

Mineta Transportation Institute

A lack or limited availability for parking may have multiple consequences, not the least of which is driver frustration, congestion, and air pollution. However, there is a greater problem that is not widely recognized by the public, namely the negative effect on the use of transit systems due to insufficient parking spaces close to key transit stations. Automated parking management systems, which have been successfully deployed in several European and Japanese cities, can manage parking needs at transit stations more effectively than other alternatives. Numerous studies have confirmed that quick and convenient automobile access to park-and-ride lots can be essential …

Data Mining Of Unstructured Textual Information In Transportation Safety Domain: Exploring Methods, Opportunities And Limitations, Keneth Morgan Kwayu

Dissertations

The unprecedented increase in volume and influx of structured and unstructured data has overwhelmed conventional data management system capabilities in organizing, analyzing, and procuring useful information in a timely fashion. Structured data sources have a pre-defined pattern that makes data preprocessing and information retrieval tasks relatively easy for the current technologies that have been designed to handle structured and repeatable data. Unlike structured data, unstructured data usually exists in an unorganized format that offers no or little insight unless indexed and stored in an organized fashion. The inherent format of unstructured data exacerbates difficulties in data preprocessing and information extraction. …

Optimizing Work Zone Schedules Considering Traffic Diversion With Artificial Bee Colony Algorithm, Celina Semaan

Dissertations

Highway maintenance activities often decrease roadway capacity and intrude traffic movements. The need to finish the project on time and under a specific budget while minimizing the traffic congestion and complying with the emission standards requires an appropriate work zone schedule optimization. The objective of this research is to improve the efficiency of work zone activities and minimize the total project cost including maintenance, user, and emission cost.

While previous studies investigated the work zone optimization problem, they did not consider the implementation of emission standards nor applied a green diversion strategy. This dissertation analyzes the optimization of work zone …

Design And Detailing Of Cast-In-Place And Precast Concrete Approach Slabs, George Morcous, Mostafa Abo-Elkhier

Nebraska Department of Transportation: Research Reports

Approach slab is a structural concrete slab that spans from the backwall of the abutment (i.e. end of the bridge floor) to the beginning of the paving section. The purpose of the approach slab is to carry the traffic loads over the backfill behind the abutments to avoid differential settlement that causes bumps at the bridge ends. Cast- in-place concrete approach slab is the current practice in US with various spans, reinforcement, thicknesses, joints, and concrete covers. NDOT has observed premature cracking in a significant number of approach slabs, which could result in a shorter service life and costly repairs/replacements …

Design And Detailing Of Cast-In-Place And Precast Concrete Approach Slabs, George Morcous Ph.D., Mostafa Abo-Elkhier

Nebraska Department of Transportation: Research Reports

Approach slab is a structural concrete slab that spans from the backwall of the abutment (i.e. end of the bridge floor) to the beginning of the paving section. The purpose of the approach slab is to carry the traffic loads over the backfill behind the abutments to avoid differential settlement that causes bumps at the bridge ends. Cast-in-place concrete approach slab is the current practice in US with various spans, reinforcement, thicknesses, joints, and concrete covers. NDOT has observed premature cracking in a significant number of approach slabs, which could result in a shorter service life and costly repairs/replacements as …

Local Calibration Of Pavement Me And Performance Evaluation Of Pavement Rehabilitation And Preservation Asphalt Overlays In Louisiana, Farzana Moon

LSU Master's Theses

Asphalt overlays can be categorized as pavement rehabilitation structural overlays or pavement preservation overlays in terms of the thickness and timing of maintenance activities. Pavement rehabilitation overlay contributes to the structural enhancement of pavements and pavement preservation overlays generally provide functional improvement to an existing pavement. In recent times, the pavement design approach employed by the Louisiana Department of Transportation and Development (LADOTD) has been transitioning from the 1993 AASHTO design procedure to a locally calibrated Pavement ME method. The AASHTOWare Pavement ME (Mechanistic-Empirical) design procedure is considered the modern approach to pavement design. Significant updates have been introduced in …

Variability In The Hamburg Wheel-Tracking Device (Hwtd) Data And Results, Ilerioluwa S. Giwa

LSU Master's Theses

Over the years, the Hamburg Wheel-Tracking Test (HWTT) has become one of the most popular devices used for characterizing asphalt mixtures for rutting potential and moisture susceptibility. However, although the HWTT is a reliable standard test for evaluating asphalt mixtures, it is not exempt from variability in the test data and result. Variability in the HWTT test data and results have been majorly attributed to imprecision in the test practice and due to some limitations in the HWT device setup.

The primary goal of this study is to evaluate the variability in the HWTT data and result by investigating a …

Increasing Boarding Lost Time At Regular Bus Stops During Rainy Conditions: A Case Study, Margarita Novales, Alfonso Orro, José-Benito Pérez-López, Jorge Feal, Miguel R. Bugarín

Journal of Public Transportation

Inclement weather conditions affect the behavior of travelers and transportation system operations. Understanding this influence can help improve operational planning schemes for any mode of transport, especially for buses. One of the factors that can be affected by rainfall is the time expended by a passenger from the moment a bus opens its doors until he/she boards the bus. This time is known as the boarding lost time (BLT); it was first introduced in the last edition of the Transit Capacity and Quality of Service Manual (TCQSM). TCQSM only considers the BLT for bus rapid transit (BRT) stations with more …

Analysis Of The Modes Of Movement Of Buses During Their Journey, A.M. Ochilov

The Scientific Journal of Vehicles and Roads

The article analyzes the order of movement of buses, increases the efficiency of passenger transportation in the public sphere in the city of Tashkent, reduces the number of private cars, pollution of the city ecology, the costs of Organization of Traffic Safety, profitability of automobile enterprises engaged in passenger transportation, etc.k. the highways solve the loading problems. Issues arising at" tashshahartransxizmat " JSC were considered in the coverage of their solutions. In increasing the efficiency of Transport, the main focus is on the wide introduction of information and communication technologies, as well as the selection of bus routes and the …

Calculation Method Of The Engine Indicators Of An Automatic Diesel Car In The Matlab Program, S.S. To’Xtamishov

The Scientific Journal of Vehicles and Roads

Automation of technological process control of modern cars is becoming a requirement of the time. Automation provides a number of conveniences for drivers and passengers. Thus, cars equipped with an automatic steering transmission allow the driver to make efficient use of engine power in addition to convenience. This article presents a mathematical model of the method of calculating the engine and vehicle performance during the movement of a vehicle with an automatically controlled transmission in the software Matlab / Simulink. The development of this method is of practical importance. By simulating a mathematical model, we see how the system works …

The Monitoring Of Dangerous Exogen Geological Processes Using The 3d Scanner, S.T. Djabbarov, R.H. Mukarramov

The Scientific Journal of Vehicles and Roads

The article focuses on observations, spatial-coordinate data and laser scanning data to prevent or predict the risk of dangerous geological processes, all of the data obtained in GPS receivers are copied to a table and then horizontal and vertical landslides are generated in graphs. With the help of laser scanners, along with this information, a topographic plan and a 3D model of the avalanche site are created. The 3D model of the site, on the other hand, shows the avalanche section up to and from each avalanche crack. The above information is in the exact avalanche section and is the …

The Influence Of The Novoangrensk Tpp Ash On The Structure Formation Of Cement Stone, V.M. Tsoy, F.F. Karimova, N.R. Muhammadiev

The Scientific Journal of Vehicles and Roads

This article presents the results of experimental studies to study the effect of fly ash of the Novoangrenskaya TPP on the properties of filled cement stone. In particular, the analysis of microscopic studies of filled cement stone from fly ash was carried out, which made it possible to draw a conclusion about the increase in the strength of the cement composite in connection with the strengthening of its structure.

Numerical Studies On The Model Of The Modernized Unit Of The Cradle Suspension Of The Vl-80s Electric Carrier While Moving In Curves, G.A. Khromova, I.S. Kamalov, M.A. Маkhаmаdаlieva

The Scientific Journal of Vehicles and Roads

The article presents the results of numerical studies of the stress-strain state of elastic rods of variable cross-section and mass, taking into account the elastic fixing of the ends for the cradle suspension unit of the electric locomotive (for example, the VL-80s electric locomotive) with a harmonic external influence that occurs when the electric locomotive moves along a path with periodic irregularities on straight sections and in curves, an algorithm and a program for the MathCAD 15 programming environment were developed.

Method Of Quantitative Research Of Navoi City On The Basis Of Choice Of Traffic Flow, K.Z. Ziyayev

The Scientific Journal of Vehicles and Roads

Due to the rapid growth in the indicators of population mobility, the demand for transport Services is increasing. The increase in traffic at various levels in the city streets is causing problems with harmful effects on the environment, increasing demand for energy resources. This determines the importance of increasing the efficiency of the use of existing transport infrastructure through the planning and modeling of transport. The article covers the method of determining the actual traffic flow in the cross-section of existing types of transport (in the example of the city of Navoi). Bunda said that urban traffic flow was carried …

Analysis Of Magnetic Chains Of Transformers Exchangers Measuring The Difference In Angle Silences, S.F. Amirov, N.R. Yuldashev

The Scientific Journal of Vehicles and Roads

The analysis conducted using the method of equivalent exchange schemes of magnetic chains of transducers, which are new and its closest analogue, working on the transformer principle, measuring the angle silences and their difference, showed that the new design of the transducer has a higher measurement sensitivity compared to its closest analogue, which is, the separation of the excitable magnetic conductor and the measuring instrument into two and the arrangement of the magnetic conductors in the form of an Archimedical spiral, as well as the connection of the measuring instrument sections in a mutual differential scheme, makes it possible to …

Research And Education For Optimizing The Development And Implementation Of An Unmanned Aircraft Program At The Nebraska Department Of Transportation, Wayne Woldt, Jon Starr, Christopher M. U. Neale

Nebraska Department of Transportation: Research Reports

This report describes the development and implementation of an Unmanned Aircraft System Program at the Nebraska Department of Transportation (NDOT). The project involved the selection and purchase of appropriate UAS and imaging systems for NDOT, education and training for NDOT personnel with classroom and hands-on operation of UAS with the goal of obtaining proficiency and pilot licenses. In addition, the development of policy for the use of UAS within NDOT was accomplished as well as standard operating procedures (SOP) documentation and the development of example case studies of interest to NDOT using the purchased systems and technology.

Research And Education For Optimizing The Development And Implementation Of An Unmanned Aircraft Program At The Nebraska Department Of Transportation, Wayne Woldt, Jon Starr, C.M.U. Neale

Nebraska Department of Transportation: Research Reports

This report describes the development and implementation of an Unmanned Aircraft System Program at the Nebraska Department of Transportation (NDOT). The project involved the selection and purchase of appropriate UAS and imaging systems for NDOT, education and training for NDOT personnel with classroom and hands-on operation of UAS with the goal of obtaining proficiency and pilot licenses. In addition, the development of policy for the use of UAS within NDOT was accomplished as well as standard operating procedures (SOP) documentation and the development of example case studies of interest to NDOT using the purchased systems and technology.

Context-Aware Sensing And Fusion For Structural Health Monitoring And Night Time Traffic Surveillance, Xinxiang Zhang

Electrical Engineering Theses and Dissertations

Rapid developments in computer vision technologies have been transforming many traditional fields in engineering and science in the last few decades, especially in terms of diagnosing problems from visual images. Leveraging computer vision technologies to inspect, monitor, assess infrastructure conditions, and analyze traffic dynamics, has gained significant increase in both effectiveness and efficiency, compared to the cost of traditional instrumentation arrays to monitor, and manually inspect civil infrastructures and traffic conditions. Therefore, to construct the next-generation intelligent civil and transportation infrastructures, this dissertation develops a comprehensive computer-vision based sensing and fusion framework for structural health monitoring and intelligent transportation systems. …