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Full-Text Articles in Engineering
A Comprehensive Safety Analysis Of Diverging Diamond Interchanges, Holly Lloyd
A Comprehensive Safety Analysis Of Diverging Diamond Interchanges, Holly Lloyd
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
With the implementation of new roadway configurations, there is a great need to study the influence of the roadway design on the crash rate. Utah is one of the leading states in the implementation of the Diverging Diamond Interchange.
In order to determine the effects of the new roadway configuration on the safety of the intersection, this study employs an Empirical Bayes before-after study of the crash rates at selected Diverging Diamond Interchanges in Utah. The results of the Empirical Bayes method were also used to calculate crash modification factors. The total number of crashes at each site were analyzed. …
Platooning Safety And Capacity In Automated Electric Transportation, James Fishelson
Platooning Safety And Capacity In Automated Electric Transportation, James Fishelson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Automated Electric Transportation (AET) proposes a system of automated platooning vehicles electrically powered by the roadway via wireless inductive power transfer. This has the potential to provide roadway transportation that is less congested, more flexible, cleaner, safer, and faster than the current system. The focus of this research is to show how platooning can be accomplished in a safe manner and what capacities such an automated platooning system can achieve. To accomplish this, first two collision models are developed to show the performance of automated platoons during an emergency braking scenario: a stochastic model coded in Matlab/Simulink and a deterministic …
Safety Evaluation Of Work Zone Practices In Utah, Tomás Ernesto Lindheimer
Safety Evaluation Of Work Zone Practices In Utah, Tomás Ernesto Lindheimer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Work zones present a risk to drivers and to personnel constructing the roadway. In 2005 work zones accounted for 2.5% of fatalities nationwide, 3.5% for the state of Utah. The goal of this research is to make work zones safer by quantifying the risk that they present to drivers. The approach of this research has been to review part 6 of the Manual of Uniform Traffic Control Devices (MUTCD) and compare the differences from the 2003 and 2009 editions, conduct field studies of Utah work zones, and develop a tool for measuring risk in work zones. In the 2009 MUTCD …