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Demographic factors and traffic crashes. Part 1, descriptive statistics and models
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Demographic factors and traffic crashes. Part 1, descriptive statistics and models
  • Publication/ Report Number:
    WPI No. 051808
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  • Edition:
    Final report; August 1996-August 1998
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  • Abstract:
    This research analyzes the Department of Highway Safety and Motor Vehicle's (DHSMV) 1993 to 1995 crash data. There are four demographic variables investigated throughout the research, which are age, gender, race, and residency. To show general trends, descriptive statistics of crash rates was first introduced using exposure data. To identify high risk groups in certain Florida counties, the concept of relative risk was applied. The method of conditional probability was used to investigate the drivers' demographic differences in crash involvement. Log-linear models were used to determine the association between the different demographic factors and type, severity, and involvement in crashes. Major findings in this research were: (1) driver age between 19-24 tend to have higher crash involvement with head-on collision, on two-lane rural undivided highways, on curves, not wearing sear-belt, while cited for violation, and while speeding; (2) drivers aged between 25-64 tend to have higher crash involvement with rear-end and sideswipe collisions, on freeways, and associated with DUI; (3) elederly drivers tend to have higher crash involvement with angle and turning collisions, at intersections, while cited for violation, disregarding traffic sign or control; (4) male drivers tend to speed, not wear seat-belts, be more involved in severe or fatal injury crashes; (5) female drivers tend to, have high crash involvement at intersections and parking lots, angle and turning collisions, and disregarding stop and yield signs; (6) white drivers tend to speed, be involved in DUI related crashes; (7) Black and Hispanic drivers tend not to wear seat-belts; (8) local drivers tend to be involved in crashes related to speeding and not wearing seat-belts; (9) state and out-state drivers have higher involvement with DUI and severe and fatal injuries; (10) foreign drivers have more problems at intersections with turning maneuvers.

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