Evaluation of the Repeal of Motorcycle Helmet Laws in Kentucky and Louisiana;Final rept

摘要

The 1998 universal motorcycle helmet law repeal in Kentucky and the 1999 repeal in Louisiana produced similar effects. Observed helmet use dropped from nearly full compliance under the laws to the 50 percent range without the laws. Motorcyclist fatalities increased in the near term by sizeable amounts-by over 50 percent in Kentucky and by 100 percent in Louisiana. Injuries also increased substantially in both states. At the same time, the number of registered motorcycles increased (by 20%), and vehicle miles traveled increased by approximately 6% (based on national numbers). Thus, some of the increase in fatalities in Kentucky and Louisiana were probably due to increased exposure.