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RISMultiobjective Pavement-Preservation Decision Making with Simulated Constraint Boundary Programming
Publisher: American Society of Civil Engineers
Abstract: An optimization model is designed to guide pavement agencies to make decisions under multicriteria decision circumstances. In this paper, a multiobjective optimization model is illustrated to enable pavement-management ...
Pavement Treatment Short-Term Effectiveness in IRI Change Using Long-Term Pavement Program Data
Publisher: American Society of Civil Engineers
Abstract: This paper finds that pavement treatment short-term effectiveness in international roughness index (IRI) follows a polynomial relationship with a pretreatment pavement condition. Pretreatment pavement condition is an ...
Generalized Equation for Soil Shrinkage Curve
Publisher: American Society of Civil Engineers
Abstract: The soil shrinkage curve (SSC) defines a constitutive relationship between soil volume and water content under drying conditions. Nearly all work to date considers a zero volume shrinkage for water content below a certain ...
Railroad Energy Efficiency in the United States: Analytical and Statistical Analysis
Publisher: American Society of Civil Engineers
Abstract: This paper provides information about railroad fuel efficiency. Two methods of estimating railroad fuel consumption are demonstrated: (1) an analytical procedure based on train resistance factors, speeds, changes in ...
Predicting Highway–Rail Grade Crossing Collision Risk by Neural Network Systems
Publisher: American Society of Civil Engineers
Abstract: In this paper, train-vehicle crash risk at highway–rail grade crossings (HRGCs) is analyzed with a neural network (NN) model to return meaningful rankings of crash-contributory-variable importance based on different criteria, ...
Review of Emerging Technologies and Issues in Rail and Track Inspection for Local Lines in the United States
Publisher: ASCE
Abstract: Deteriorated track infrastructure can lead to significant consequences, such as derailment incidents, loss of revenue-service hours, reduced train operation speed, and even failure of the business. The Federal Railroad ...
Advanced Deep Learning–Based Hybrid Rail Extraction Algorithm Leveraging LiDAR Technology
Publisher: American Society of Civil Engineers
Abstract: In the United States, around 1/3 of the rail network is operated by short lines. These railroads play an important role in the nation’s transportation system by serving as the feeder and distributor for the rail network, ...
Impact of Forest Road Maintenance Policies on Log Transportation Cost, Routing, and Carbon-Emission Trade-Offs: Oregon Case Study
Publisher: ASCE
Abstract: Wood transportation costs have significant impacts on timber investment returns. To optimize transportation costs, a practical design of the route network is necessary for log trucks that ship wood material from timberlands ...
Tropical Storm-Induced Landslide Potential Using Combined Field Monitoring and Numerical Modeling
Publisher: American Society of Civil Engineers
Abstract: When heavy rainfall, such as that associated with tropical storms, falls on steep hillsides, shallow landslides are often one of the damaging consequences. To assess landslide potential from heavy rainfall, a strategy of ...