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The Role of Safety Attitudes and Attitudes Toward Vehicle in Urban Crashes

Khodadadi, Ali | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52127 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Kermanshah, Mohammad
  7. Abstract:
  8. Nearly 1.2 million people die in road crashes each year, and as many as 50 million are injured in the world. In Iran, approximately 800 thousand crashes occur annually killing up to 43 people per day. Given that over 90% of accidents are related to human factors, using models that incorporate driver’s attitudes and behavior can be highly predictive of crashes. The main objective of the current research is to examine the impact of drivers’ attitudes on road crashes along with other factors such as socio-demographic characteristics and vehicle type. This study uses data from a self-completed questionnaire among a representative sample of Iranian drivers living in Tehran. The Questionnaire contains information on safety attitudes, attitudes toward vehicle attributes, driver’s travel pattern, socio-demographic characteristics, vehicle attributes, and accidents frequency and severity. In This study, exploratory factor analysis and confirmatory factor analysis have been used to identify underlying factors and, structural equation modeling has been used to investigate associations between these factors, and frequency and severity of accidents. The results showed that attitudes are related to both vehicle attribute, and frequency and severity of accidents. Four variables reflecting safety attitudes affect accidents directly and indirectly through influencing travel behavior. moreover, attitudes toward vehicle attribute are directly related to the driver’s vehicle, which is one of the main factors of accidents. The results also indicated that the driver’s socio-demographic characteristics such as age, education level and wealth, are indirectly associated with frequency and severity of accidents through other explanatory variables
  9. Keywords:
  10. Safety Attitudes ; Vehicle Safety Level ; Factor Analysis ; Structural Equations Modeling ; Equivalent Property Damage Only Accidents

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