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 8 of 8 for “"safety performance functions"”.
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Calibration of the Highway Safety Manual and development of new safety performance functions for rural multilane highways in Kansas
… for about 66% of all fatal crashes. The Highway Safety Manual (HSM) provides models and methodologies for analyzing the safety of various types of highways. Predictive methods in the HSM were developed based on national trends and data from few states throughout the United States. However, these …
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Development of safety performance functions and a GIS based spatial analysis of collision data for the City of Saskatoon
… produced the first edition of the Highway Safety Manual (HSM) in 2010. The HSM introduces a six-step safety management process which provides engineers with a systematic and scientific approach to identifying and managing safety concerns on a road network. Each step plays a vital role in …
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Network Roadway Surface Friction and Its Usage to Improve Safety and Project Performance along West Virginia Highways
… of Highways' roadway network is key to the safety of all traveling motorists. Being geographically located in the rugged Appalachian Mountains, the West Virginia Division of Highways' roadway network is flooded with innumerable geometric and design challenges, causing drivers to have to …
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Quantifying the Impact of Pavement Surface Properties on Road Safety: A Data-Driven Approach
The Highway Safety Manual's (HSM) safety performance functions (SPFs) are widely used for network screening and project prioritization; however, most formulations focus on volumetric exposure and geometry and omit pavement surface characteristics that govern tire–road interaction. Despite the …
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Reducing Highway Crashes with Network-Level Continuous Friction Measurements
… Machine (SCRIM), in a systemic highway safety management approach to reduce crashes that result in fatalities, injuries, and property damage only. The dissertation presents four manuscripts. In the first manuscript, orthogonal regression is used to develop models for converting between …
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Developing crash modification factors for operational parameters on urban freeways
Studies have shown that, roadway safety has become an intensively investigated topic with the objective of improved understanding of the factors that cause crashes to occur. However, it has been shown that as traffic volumes continue to increase across the United States, 52% of drivers feel less …
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Exploration and development of crash modification factors and functions for single and multiple treatments
Traffic safety is a major concern for the public, and it is an important component of the roadway management strategy. In order to improve highway safety, extensive efforts have been made by researchers, transportation engineers, Federal, State, and local government officials. With these consistent …
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Traffic Safety Assessment of Different Toll Collection Systems on Expressways Using Multiple Analytical Techniques
Traffic safety has been considered one of the most important issues in the transportation field. Crashes have caused extensive human and economic losses. With the objective of reducing crash occurrence and alleviating crash injury severity, major efforts have been dedicated to reveal the hazardous …