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The relationship between driver and passenger's seatbelt use: a bivariate probit analysis
Eric Nimako Aidoo1, Richard Amoh-Gyimah2, Williams Ackaah3
1Department of Statistics & Actuarial Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
International Journal of Injury Control and Safety Promotion
|February 4, 2021
Summary
Driver and passenger seatbelt use are positively linked, indicating shared unobserved factors influence their behavior. This highlights the importance of understanding these connections for improving vehicle occupant safety.
Area of Science:
- Traffic Safety
- Behavioral Science
- Public Health
Background:
- Vehicle seatbelts significantly improve occupant safety.
- Despite known benefits, many occupants do not use seatbelts.
- The relationship between driver and passenger seatbelt use remains under-researched.
Purpose of the Study:
- To analyze the relationship between driver and front-right passenger seatbelt use.
- To identify factors influencing simultaneous seatbelt usage in vehicles.
Main Methods:
- Roadside observational survey of 5,433 vehicles.
- Application of a bivariate probit model to analyze correlated seatbelt use behaviors.
- Statistical analysis of driver and front-right passenger seatbelt usage data.
Main Results:
- Prevalence rates: 81% for drivers and 33% for front-right passengers.
- A significant positive correlation (0.53) was found between driver and passenger seatbelt use.
- Unobserved factors influencing driver seatbelt use also impact passenger seatbelt use.
Conclusions:
- Driver and front-right passenger seatbelt use are positively associated.
- Shared unobserved factors play a crucial role in the seatbelt use of both driver and passenger.
- Findings suggest interventions could target both occupants simultaneously.
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