The relationship of age and state license renewal policies to driving licensure rates.

We employ regression analysis to examine the relationship of state driver's license renewal requirements, population characteristics, and driving conditions to state driving licensure rates. Licensure rates are examined for the years 1985 through 1989. We separately examine all-age and senior licensed drivers. We find that license renewal requirements as well as population characteristics and driving conditions have systematic relationships to licensure rates. In particular, license renewal tests are associated with lower senior driving licensure rates.