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Full-Text Articles in Automotive Engineering
Development Of An Improved Arterial Roadway Performance Reliability Methodology, Ernest Tufuor
Development Of An Improved Arterial Roadway Performance Reliability Methodology, Ernest Tufuor
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
The need for reliable performance measures of urban arterial roadways is increasing because of the rise in traffic congestion and the high value of travel time. Consequently, travel time reliability (TTR), which combines components of measures of central tendency and measures of dispersion of travel times, has recently received considerable research interest.
The basis of all TTR metrics is the travel time distribution (TTD). Estimating and forecasting arterial TTDs for TTR analysis is the focus of this dissertation. This dissertation proposes a new TTR methodology that is a marked improvement on recent TTR estimation and forecasting methodologies including the current …
Indicators Of Assessing Vehicle Safety Status Under Platoon Conditions At Freeway, Jianan Zhou
Indicators Of Assessing Vehicle Safety Status Under Platoon Conditions At Freeway, Jianan Zhou
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
Issue on level freeway segment (Interstate 80) in Nebraska: • High truck percentage (higher than 25%) • Different speed profile - The speed of trucks are set to 67 mph, on average. - The speed of passenger cars are 75 mph, on average. • Result platoons - Approximately 85% of vehicles are observed in platoon. - the degree of freedom to maneuver for drivers are constrained by other in-platoon vehicles. - Vehicles in platoons may face unsafe situation. Goal: Develop indicators to assess the safety status of vehicles under platoon conditions at level freeway segment.
The data were collected at …