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Negative Binomial Analysis of Intersection-Accident Frequencies
Publisher: American Society of Civil Engineers
Abstract: Traffic accidents at urban intersections result in a huge cost to society in terms of death, injury, lost productivity, and property damage. Unfortunately, the elements that effect the frequency of intersection accidents ...
Statistical Modeling of User Perceptions of Infrastructure Condition: Application to the Case of Highway Roughness
Publisher: American Society of Civil Engineers
Abstract: In determining certain infrastructure rehabilitation needs, it is sometimes important to consider user perceptions along with physical measures of infrastructure condition. Pavement roughness is one such case. A critical ...
Analysis of Freeway Travel Time Variability Using Bluetooth Detection
Publisher: American Society of Civil Engineers
Abstract: Travel time has long been an important performance measure for assessing traffic conditions and the extent of highway congestion. However, recently, more and more attention has been given to understanding the uncertainty ...
Estimating Rear-End Accident Probabilities at Signalized Intersections: Occurrence-Mechanism Approach
Publisher: American Society of Civil Engineers
Abstract: At signalized intersections, rear-end accidents are frequently the predominant accident type. These accidents result from the combination lead-vehicle deceleration and the ineffective response of the following vehicle’s ...
Effectiveness of Speed Control Measures on Nighttime Construction and Maintenance Projects
Publisher: American Society of Civil Engineers
Abstract: Nighttime work-zone safety has become a concern among state transportation agencies due to an increasing number of work-zone fatalities and the high percentage of roadwork performed at night. Speed control has been determined ...
Model Sensitivity Analysis for Biotrickling Filter Treatment of Graywater Simulant and Waste Gas. II
Publisher: American Society of Civil Engineers
Abstract: A detailed sensitivity analysis was conducted to identify key parameters for a biotrickling filter simultaneously treating graywater and waste gas containing ammonia and hydrogen sulfide contaminants. Sampling-based ...
Household Attitudes toward Water Rate Increases Based on Perceptions of Water Service Reliability and Quality: An Exploratory Analysis
Publisher: ASCE
Abstract: Due to the high costs associated with maintaining and upgrading water infrastructure systems, selecting an appropriate water rate to charge for water service is an important step for water utilities. Understanding the ...
Statistical Assessment of the Cost Effectiveness of Highway Pavement Warranty Contracts
Publisher: American Society of Civil Engineers