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Dive into the research topics where Dean L. Sicking is active.

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Featured researches published by Dean L. Sicking.


Journal of Transportation Safety & Security | 2014

Correlation Between Crash Severity and Embankment Geometry

Kevin D Schrum; Francisco Daniel Benicio de Albuquerque; Dean L. Sicking; Ronald K. Falle; John D. Reid

The severity of a roadside feature is often based on survey responses and has tended to emphasize extreme crash events, thereby overestimating the average severity of a particular feature. In this study, severity was related to embankment geometry by examining real-world accident data over a 7-year period. This was done by correlating the number of severe and fatal accidents to the exposure of particular slope geometries. Slope geometry was described by slope steepness and fill height, and its exposure was described by traffic volume and total unshielded mileage. Severity was adjusted for posted speed limits as well. The Roadside Safety Analysis Program (RSAP) was calibrated such that the distribution of severe injury and fatal accidents accurately reflected real-world data. Using this calibrated version of RSAP, the new severity indexes were studied and equations were created to correlate severity index to functional class, fill height, slope steepness, and posted speed limit. The local highway classification provided the highest severity, and the default severity used in RSAP was increased to accommodate this finding. Freeways, rural arterials, and urban arterials experienced reduced severity indexes relative to default values used in RSAP.


Journal of Transportation Safety & Security | 2017

Optimal guardrail runout lengths for freeways

Francisco Daniel Benicio de Albuquerque; Dean L. Sicking; Cody S Stolle; Ronald K. Faller; Karla A Lechtenberg; Erik Emerson

ABSTRACT Guardrails have commonly been installed to prevent errant vehicles from impacting roadside hazards. However, guardrail impacts have contributed to numerous serious injuries and fatalities. Plus, guardrails are generally impacted more often because they are installed closer to the edge of travel way and are much longer than the shielded hazard itself. Thus, to reduce the frequency of guardrail crashes, an optimized length should be determined. The American Association of State Highway and Transportation Officials (AASHTO) Roadside Design Guide (RDG) has suggested guardrail runout lengths which are dependent on posted speed limit and traffic volumes. Crash data analyses and simulation using the recently-updated Roadside Safety Analysis Program (RSAPv3) was conducted to evaluate the guardrail length-of-need (LON) associated with the lowest crash cost (i.e., cost associated with injuries and property damage) and maximum cost-effectiveness for freeways. Crash data involving Kansas guardrail systems, which were compliant with recommendations provided in the 2006 AASHTO RDG and occurring on freeways with divided medians, were collected and analyzed. The frequency, rate, and risk of shielded hazard crashes were extremely low. RSAPv3 analyses indicated that there was an economic and safety benefit to reducing the installed LON as well as utilizing different runout lengths for left- and right-side departures for divided roadways.


Archive | 1998

Sequential kinking guardrail terminal system

Dean L. Sicking; John D. Reid; John R. Rohde


Archive | 1999

Controlled buckling breakaway cable terminal

John D. Reid; John R. Rohde; Dean L. Sicking


Archive | 2003

Trailer mounted bursting energy absorption system

John D. Reid; John R. Rohde; Dean L. Sicking


Archive | 2006

Trailer mounted attenuator with breakaway axle assembly

John D. Reid; John R. Rohde; King K. Mak; Dean L. Sicking


Archive | 2004

Energy absorbing post for roadside safety devices

Dean L. Sicking; John R. Rohde; John D. Reid; King K. Mak


Accident Reconstruction Journal | 2008

Development of the Midwest Guardrail System for Standard and Reduced Post Spacing and in Combination With Curbs: Part Two

Karla A Polivka; Ronald K. Faller; Dean L. Sicking; John D. Reid; John R. Rohde; James C Holloway; Beau Daniel Kuipers; Bob W. Bielenberg


Archive | 2004

Bridge pier crash cushion system

John D. Reid; John R. Rohde; Dean L. Sicking; King K. Mak


Sports Engineering | 2017

Youth helmet design in sports with repetitive low- and medium-energy impacts: a systematic review

Elizabeth N. Kuhn; Joseph H. Miller; Blake Feltman; Alexander K. Powers; Dean L. Sicking; James M. Johnston

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John D. Reid

University of Nebraska–Lincoln

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John R. Rohde

University of Nebraska–Lincoln

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Ronald K. Faller

University of Nebraska–Lincoln

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Karla A Lechtenberg

University of Nebraska–Lincoln

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Karla A Polivka

University of Nebraska–Lincoln

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Cody S Stolle

University of Nebraska–Lincoln

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James C Holloway

University of Nebraska–Lincoln

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Robert W Bielenberg

University of Nebraska–Lincoln

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