Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"AADT"”.
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Bicycle and Pedestrian Traffic Monitoring and AADT Estimation in a Small Rural College Town
… patterns (e.g., annual average daily traffic [AADT] and miles traveled [MT]), and conduct safety analysis (e.g., crash, injury and collision). However, unlike for motorized traffic, non-motorized traffic has not been comprehensively monitored in communities throughout the U.S. and is generally …
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Machine-Learning based Ship Traffic Prediction in the Suez Canal
… the average annual daily ship traffic (AADT) of ships within the Suez Canal with a focus on evaluating how deep-learning techniques can be leveraged for both approaches. The first approach is a novel method that utilizes both satellite imagery and AIS technology to predict the AADT. In …
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Performing Network Level Crash Evaluation Using Skid Resistance
… as a function of average annual daily traffic (AADT) and other variables. For this thesis, a crash study was carried out for the interstate, primary and secondary routes, in the Salem District of Virginia. The data used in the study included the following information obtained from Virginia …
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Modeling Crash Frequencies At Signalized Intersections In Central Flor
… were associated with high natural logarithm of AADT on the major road and the number of lanes (major intersections, e.g. 6x4/6x6), whereas AADT on the major road did not affect left-turn crashes. Intersections with the configuration 4x2/6x2 (2 through lanes at the minor roadway) or T …
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Effect of Pavement Condition on Traffic Crash Frequency and Severity in Virginia
… Depth (RD), Annual Average Daily Traffic (AADT), this thesis analyzed the effect of Critical Condition Index (CCI) on crash frequency, in addition to the other factors identified in previous studies. Other characteristics such as Percentage of Heavy Vehicles, Road Surface Condition, Road …
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Assessing Crash Occurrence On Urban Freeways Using Static And Dynamic Factors By Applying A System Of Interrelated Equations
… etc. Also researchers traditionally used AADT to represent traffic volumes in their models. These two cases are examples of macroscopic crash frequency modeling. To investigate the microscopic models, and to identify the significant factors related to crash occurrence, a preliminary study …
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Safety Effects Of Traffic Signal Installations On State Road Intersections In Northeast Florida
… and is significant. Operational factors such as AADT, turning movement counts, and speed limits; and geometric factors such as medians, turn lanes and numbers of lanes were considered to determine their effect on crashes at signalized intersections. Smaller roads, with low AADT, fewer lanes, and …
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Safety analysis of freeway interchange speed change lane facilities
… frequency factors were calculated for freeway AADT, entrance ramp AADT, exit ramp AADT, number of lanes, and speed limits. These factors can be used by safety practitioners in allocating resources for safety improvements. Taken together, these microscopic and macroscopic approaches provide a …
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Analysis of the crash potential at signalized intersections with trap lanes
… Crashes per Total Crashes; (3) Total Crashes per AADT/10,000 per Intersection Lane Overall, the results of the analysis do not strongly support that signalized intersections with trap lanes experience a higher number of sideswipe or total crashes. The inconclusive analysis for significance of trap …
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Prediction of Bridge Fires Characteristics Using Machine Learning
… materials, annual average daily traffic (AADT), ignition source, types of combustible, position of the fire against bridges, and the fire-caused damage level. The outcome of this research will help predict the risk of fire in bridges with various characteristics and the level of damage.
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Impact of Road Proximity and other Determinants of Air Quality along Multi-Use Trails in the National Capital Region
… a nearby road Annual Average Daily Travel (AADT) of more than 32,000. The regression models explain 65%, 59%, and 52% of variability in the PM2.5, particle number, and black carbon concentrations respectively. Nearby road AADT and road density were found to be significant for PM2.5, particle …
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Developing crash modification factors for operational parameters on urban freeways
… features and annual average daily traffic (AADT). Studies suggest that these variations are due to volume changes throughout the day, an effect literature shows that can only be addressed by hourly volumes and not AADT. Driven by these literature conclusions, this dissertation develops crash …
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Evaluation of key factors in transportation risk analysis
… distribution of Annual Average Daily Traffic (AADT) volumes. Accident data for the rail route were obtained directly from the Union Pacific Railroad Company; In 1984, the Department of Energy conducted a preliminary cost and risk analysis for transporting spent fuel and high level wastes to …
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Artificial Intelligence and Spatial Modeling to Estimate Traffic Volume Measures on Local Roadways
… to estimate Annual Average Daily Traffic (AADT) on local roadways, which are often data-scarce yet crucial for transportation planning and infrastructure development. Traditional traffic monitoring methods, such as permanent traffic count stations and short-term manual counts, are …
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Neural Network Trees And Simulation Databases: New Approaches For Signalized Intersection Crash Classification And Prediction
… is an increase in the major and minor roadways' AADT and speed limits, surface conditions, total left turning lanes, channelized right turning lanes for the major roadway and the protected left turning lanes for the minor roadway, but decrease when the light conditions are dark. The next phase in …
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DATA-DRIVEN METHODS FOR REDUCING WRONG-WAY CRASHES ON FREEWAYS
… developed with the annual average daily traffic (AADT) and segment length being the independent variables. The procedures for candidate wrong-way crash sites diagnoses with crash data, historic site data, field condition and other information were described step by step. The methods for …
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GIS-Based Pavement Maintenance Management Model for Local Roads in the UK
… Annual Average Daily Traffic (AADT), Possible Conflict or Overlap with Other Road Works, Risk of failure, Safety Concern, Accident Rate (related to surface condition), Scheme Cost, Available Budget/Funding and Whole Life-Cycle Cost. Interviews were also conducted with experts in …
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Analyzing the Safety Effects of Edge Lane Roads for All Road Users
… analysis for ELR sites where requisite data on AADT and other relevant characteristics were available. Crash data was collected and compiled into four different groups: ELR before implementation, ELR after implementation, comparison site before ELR implementation, and comparison site after ELR …
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Characteristics and contributory causes related to large truck crashes (phase-II) - all crashes
… lane class, and Average Annual Daily Traffic (AADT). Other variables such as age of truck driver, day of the week, gender of truck-driver, pedestrian- and truck-related contributory causes were found to have no relationship with crash severity of large trucks. Furthermore, driver-related …
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A New Approach To Identify The Expected Crash Patterns Based On Signalized Intersection Size And Analysis Of Vehicle Movements
… intersection is used as a surrogate measure to AADT per lane and also intersection type is introduced as a 'predictor' of crash type. The binary logistic regression analyses indicated, among other results, that at intersections with one-way roads, adverse weather conditions, older drivers and/or …
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