Sun Glare and Traffic Crashes: Identifying Patterns of Key Factors

Sun glare is one of the major environmental obstructions that cause traffic crashes. Every year, many traffic crashes in the United States are attributed to sun glare. However, quantitative analysis of the influence of sun glare on traffic crashes has not been widely examined. This study used traffic crash narrative data for seven years (2010-2016) from Louisiana to identify crash reports that provided evidence of drivers indicating sun glare as the primary contributing factor of the crashes. Additional geometry and traffic information was collected to identify the list of key crash-contributing factors. This study used cluster correspondence analysis to perform the data analysis. After performing several iterations, six clusters were identified that provide additional insight regarding sun glare related crashes. The six clusters are associated with mixed (business and residential) localities, intersection related crashes on U.S. roadways, single vehicle crashes on residential two-lane undivided roadways, curve related crashes on Parish roadways in residential localities, interstate related crashes in open county localities, and curve related crashes in open county localities. The findings of the current study can add insights into the ongoing safety analysis on sun glare related crashes.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 15p

Subject/Index Terms

Filing Info

  • Accession Number: 01763426
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-01764
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 10:59AM