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Full-Text Articles in Engineering
Investigation Of The Effective Use Of Warning Lights On Indiana Department Of Transportation (Indot) Vehicles And Equipment, Bob Mccullouch, Brandon Stevens
Investigation Of The Effective Use Of Warning Lights On Indiana Department Of Transportation (Indot) Vehicles And Equipment, Bob Mccullouch, Brandon Stevens
JTRP Technical Reports
This study was requested by INDOT to determine if current lighting packages used on INDOT maintenance vehicles, specifically snow plow vehicles, can be improved with other commercially available products. Different light products were obtained from various vendors, mounted on INDOT vehicles, and visual comparisons were performed under various lighting and weather conditions by a team of observers. The comparison evaluations were performed revealing that other light packages, LED models for most options, were brighter and certain colors more visible. The preferred light models are recommended. These recommendations were forwarded to appropriate individuals that make these decisions at INDOT. Implementation is …
Crashes In The Vicinity Of Major Crossroads, Charles G. Allen
Crashes In The Vicinity Of Major Crossroads, Charles G. Allen
Theses and Dissertations
Major crossroads are designed to facilitate the conflicting movements of numerous vehicles in a manner that is both safe and efficient. Accesses located within the functional areas of major crossroads add complication to intersection activity due to additional conflicts arising from ingressing and egressing movements at the accesses. In this research, the impact of accesses on crashes within major crossroad functional areas was analyzed. Specifically, the effects of access spacing within functional areas and access setback from intersections were addressed. In order to conduct the analysis, the functional areas of 159 signalized major arterial crossroads across the state of Utah …
Evaluation Of Median Barrier Safety Issues, Kenneth R. Agent, Jerry G. Pigman
Evaluation Of Median Barrier Safety Issues, Kenneth R. Agent, Jerry G. Pigman
Kentucky Transportation Center Research Report
The objective of this study was to evaluate the effectiveness of the Brifen TL-4 and Trinity CASS median cable barrier systems in preventing cross-median collisions on sections of I-64, I-71, and I-265 (Brifen system) and I-265 (Trinity system) in Jefferson County and on KY 4 (Brifen system) in Fayette County. An effort was made to identify crashes which involved a vehicle crossing a median. Using specific logic to identify this type of crash, 392 crashes were identified for the five-year period of 2001 through 2005. Using crash and mileage data resulted in an average of 0.28 crossover crashes per mile …
Multi-Barge Flotilla Impact Forces On Bridges, Peng Yuan, Issam E. Harik, Michael T. Davidson
Multi-Barge Flotilla Impact Forces On Bridges, Peng Yuan, Issam E. Harik, Michael T. Davidson
Kentucky Transportation Center Research Report
The current AASHTO equations for barge impact loads are based on scale models of barges, and may not accurately predict impact loads on bridge piers. The results of this study produce more realistic flotilla impact design loads, potentially leading to a reduction in construction costs of bridges over navigable waterways. The objectives of this study are: (1) To conduct theoretical finite element analysis on various types of flotillas impacting bridge piers. The flotillas and the respective barges will be of the type commonly traversing Kentucky’s waterways; and (2) To generate design equations for barge/flotilla impact loads. The study concludes the …
Comparison Of Characteristics Between Fatal And Injury Accidents In The Highway Construction Zones, Yingfeng Li, Yong Bai
Comparison Of Characteristics Between Fatal And Injury Accidents In The Highway Construction Zones, Yingfeng Li, Yong Bai
Civil and Environmental Engineering Faculty Research and Publications
Highway construction zone safety has been a research focus in many countries for many decades. In the United States, regardless of the research efforts devoted, highway construction zones remain a serious safety concern for government agencies, legislatures, the highway industry, and the traveling public. In this study, the fatal and injury accidents between 1992 and 2004 in Kansas highway construction zones were examined systematically and their major characteristics were compared. The results showed significant differences between fatal and injury accidents in the construction zones. The researchers found that: (1) head-on was the dominant type for fatal accidents while rear-end was …
Characteristics Of Red Light Running Crashesin Florida, Dina Elnashar
Characteristics Of Red Light Running Crashesin Florida, Dina Elnashar
Electronic Theses and Dissertations
Red light running is one of the main contributing factors of crashes in urban areas in Florida and the United States. Nationwide, according to preliminary estimates by the Federal Highway Administration (FHWA) 2001, there were nearly 218,000 red-light running crashes at intersections. These crashes resulted in as many as 181,000 injuries and 880 fatalities, and an economic loss estimated at $14 billion per year nationwide, According to the Community Traffic Safety Team Florida Coalition (A statewide traffic safety group) there were 9,348 crashes involving red-light running in Florida and 127 fatalities in 1999. This research study focused on studying the …
Risk Assessment Of Various Median Treatments Of Rural Interstates, Natalie M. Villwock, Nicolas Paul Blond, Andrzej P. Tarko
Risk Assessment Of Various Median Treatments Of Rural Interstates, Natalie M. Villwock, Nicolas Paul Blond, Andrzej P. Tarko
JTRP Technical Reports
This report presents results of a comprehensive study that evaluates the safety impacts of alternative median treatments on rural freeways. Extensive data were obtained from Indiana, Colorado, Illinois, Iowa, Missouri, New York, Ohio, Oregon, Washington, and Wisconsin. The studied median treatments include AASHTO-recommended treatments: depressed medians, depressed medians with high and lowtensioned cable barriers, and flush medians with concrete barriers. Other treatments used in the freeway design were also studied: medians with berms, sloped medians, and depressed medians with berms. Negative binomial models were developed to predict the frequency of crashes in three categories: single vehicle (SV), multiple vehicles same …
Kentucky Traffic Collision Facts 2008 Report, Kentucky Transportation Center, Kentucky State Police
Kentucky Traffic Collision Facts 2008 Report, Kentucky Transportation Center, Kentucky State Police
Kentucky Transportation Center Research Report
KENTUCKY’S TRAFFIC COLLISION FACTS report for 2008 is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised Statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize data on traffic collisions for such purposes as will improve the traffic safety program in the Commonwealth. Data contained in this report are based solely on the observations …
Factors Affecting Young Driver Safety In The State Of Louisiana, Cherian Cherian-Korah
Factors Affecting Young Driver Safety In The State Of Louisiana, Cherian Cherian-Korah
LSU Master's Theses
Though teenage drivers constitute only 6.4 percent of the total drivers in United States, they are responsible for 14 percent of the fatal crashes and are involved in 18 percent of all police-reported crashes in the country. One of the main causes of teenage crashes was found to be the presence of passengers in the vehicle. This study is focused on the effect of passengers on young drivers in the state of Louisiana. There have been efforts from traffic safety departments to contain crashes involving this age group of drivers and, particularly the Graduated Driver's License Law, which imposes restrictions …