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dc.contributor.authorWatson, Christopher Earlen_US
dc.date.accessioned2009-01-22T15:41:28Z
dc.date.available2009-01-22T15:41:28Z
dc.date.issued2008-11-19en_US
dc.identifier.urihttp://hdl.handle.net/1853/26508
dc.description.abstractThis thesis presents an analysis of the characteristics of malfunction flash incidents based on the Georgia Department of Transportation crash reporting database. Malfunction flash is an unintentional state of flash mode in intersection signal hardware. The flash mode is a signal indication of yellow/red or red/red flash. The flash mode can be due to many issues, such as hardware failure, damage, or storms. Crash reports are completed by police officers at the scene. After processing by the local jurisdiction reports are sent to GDOT for archiving and analysis. GDOT archives the reports in a PDF image format without editable text. This research will develop a procedure to convert the archived PDF reports to text files using optical character recognition (OCR) software. The developed procedure will extract the description paragraph of the incident from the PDF. The extracted descriptions may then be searched for useful information about the incident. The text files will be run through a filter for keywords, such as; "malfunction flash," "red/red flash," "yellow/red flash," and others. Incidents flagged by the keywords will be reexamined to determine if they are malfunction flash incidents. The 2006 GDOT incident data base will be used for this effort. From an original possible candidate list of 70,000 signalized intersection incidents malfunction incidents will be identified using this method. A statistical analysis will be completed seeking trends and important characteristics of malfunction incidents.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectFlashing signalen_US
dc.subjectYellow/reden_US
dc.subjectRed/reden_US
dc.subjectMalfunction flashen_US
dc.subject.lcshElectronic traffic controls
dc.subject.lcshTraffic safety
dc.subject.lcshTraffic signs and signals
dc.subject.lcshTraffic accidents Statistics
dc.titleStatistical analysis of crashes occurring at intersections in malfunction flashen_US
dc.typeThesisen_US
dc.description.degreeM.S.en_US
dc.contributor.departmentCivil and Environmental Engineeringen_US
dc.description.advisorCommittee Member: Hunter, Michael; Committee Member: Meyer, Michael; Committee Member: Rodgers, Michaelen_US


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