01123237

Component

Using comprehensive police traffic citation data over a 10-year period, patterns of violations for those caught for speeding, DUI (driving under the influence) and seat belt violations are analyzed and modeled. After examining the characteristics of violators in terms of gender, age, license and location of offense, the relative risks of being cited are calculated. Next, a Venn diagram showing the relationships between those cited for speeding, driving under the influence (DUI), and seat belt non-use on the same day. Over this period, 514,496 motorists only received speeding tickets; 222,566 only received seat belt citations; and 33,769 only received a DUI. Over this period, 7,212 received both speeding and DUI citations; 3,834 received both speeding and seat belt citations; and 1,063 received tickets for violation of both seat belt and DUI laws. There were 177 motorists who received seat belt, DUI, and speeding violations. Next the time-to-event characteristics of those cited for speeding, seat belt, and DUI violations are described and analyzed. The time between first and second, second and third, and third and fourth violations for seat belt, DUI, and speeding are analyzed in terms of the mean number of days between violations. Notably, the overall mean between first and second violation for seat belts is approximately 789 days, while the mean days between second and third violations is approximately 599 days. The mean days between third and fourth violations drops to 493 days. A similar pattern of decrease in mean days between violations as the frequency of violations increases is also observed for both DUI and speeding citations. The differences between various age and gender groups as well as other background variables are also described. The paper concludes with a series of models explaining the relevant factors associated with the time characteristics of seat belt, DUI, and speeding violations to illustrate the salient, statistically significant variables associated with reductions in time between violations. This provides useful information for enforcement and education programs.

01120148

09-0614

English

22p

2009

Transportation Research Board 88th Annual Meeting

DVD

Figures (2) ; References (6) ; Tables (9)

Drunk driving; Safety; Seat belts; Speeding; Traffic citations; Traffic data; Traffic violators

Speeding citations

Hawaii

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

Transportation Research Board Annual Meeting 2009 Paper #09-0614

TRIS, TRB

Jan 30 2009 4:52PM