A subset of new licensees, namely the ones with suspensions or invalidity periods of at least 90 days are studied. This subpopulation is comprised of 3,550 men and 1,295 women for whom the study file contains age, gender, licensing examination performance, and the dates all police reported crashes for the first three years after licensing. This group is compared with the complementary subpopulation of 53,069 men and 58,464 women. The average injury crash rate per year, not prorated, is 0.057 for men and 0.033 for women, about twice the rate for those without lengthy suspensions. These licensees are older, have lower success rates at licensing examinations, and have a longer learning period than the others. Separate logistic-normal regression models for men and for women are estimated for the probability of a collision in a year using the available explanatory variables. (Author/publisher)
Abstract