Improving safety of teenage and young adult drivers in Kansas

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dc.contributor.author Amarasingha, Niranga
dc.date.accessioned 2012-11-21T19:32:05Z
dc.date.available 2012-11-21T19:32:05Z
dc.date.issued 2012-11-21
dc.identifier.uri http://hdl.handle.net/2097/14979
dc.description.abstract Young drivers have elevated motor vehicle crash rates compared to other drivers. This dissertation investigated characteristics, contributory causes, and factors which increase the injury severity of young driver crashes in Kansas by comparing them with more experienced drivers. Crash data were obtained from the Kansas Department of Transportation. Young drivers were divided into two groups: 15-19 years (teen) and 20-24 years (young adult) for a detailed investigation. Using data from 2006 to 2009, frequencies, percentages, and crash rates were calculated for each characteristic and contributory cause. Contingency table analysis and odds ratios (OR) analysis were carried out to identify overly represented factors of young-driver crashes compared to experienced drivers. Young drivers were more likely to be involved in crashes due to failure to yield-right-of way, disregarding traffic signs/signals, turning, or lane changing, compared to experienced drivers. Ordered logistic regression models were developed to identify severity affecting factors in young driver crashes. According to model results, factors that decreased injury severity of the driver were seat belt use, driving at low speeds, driving newer vehicles, and driving with an adult passenger. The models also showed that alcohol involvement, driving on high-posted-speed-limit roadways, ejection at the time of crash, and trapping at the time of crash can increase young drivers’ injury severity. Based on identified critical factors, countermeasure ideas were suggested to improve the safety of young drivers. It is important for teen drivers and parents/guardians to gain better understanding about these critical factors that are helpful in preventing crashes and minimizing driving risk. Parents/guardians can consider high-risk conditions such as driving during dark, during weekends, on rural roads, on wet road surfaces, and on roadways with high speed limits, for planning teen driving. Protective devices, crash-worthy cars, and safer road infrastructures, such as rumble strips, and forgiving roadsides, will particularly reduce young drivers’ risk. Predictable traffic situations and low complexity resulting from improved road infrastructure are beneficial for young drivers. The effectiveness of Kansas Graduated Driver Licensing (GDL) system needs to be investigated in the future. en_US
dc.description.sponsorship Kansas Department of Transportation; University Transportation Center- Kansas State University; Department of Civil Engineering- Kansas State University en_US
dc.language.iso en_US en_US
dc.publisher Kansas State University en
dc.subject Highway safety en_US
dc.subject Young drivers en_US
dc.subject Teen drivers en_US
dc.subject Severity models en_US
dc.subject Logistic regression en_US
dc.subject Crash data analysis en_US
dc.title Improving safety of teenage and young adult drivers in Kansas en_US
dc.type Dissertation en_US
dc.description.degree Doctor of Philosophy en_US
dc.description.level Doctoral en_US
dc.description.department Department of Civil Engineering en_US
dc.description.advisor Sunanda Dissanayake en_US
dc.subject.umi Civil Engineering (0543) en_US
dc.subject.umi Transportation (0709) en_US
dc.date.published 2012 en_US
dc.date.graduationmonth December en_US


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