New Jersey's license plate decal requirement for graduated driver licenses: attitudes of parents and teenagers, observed decal use, and citations for teenage driving violations.

Objectives: On May 1, 2010, New Jersey implemented a law requiring teenagers with learner's permits or probationary licenses to display reflective decals on the front and rear license plates when they drive. The current study examined attitudes of parents and teenagers toward this requirement, use of decals, and reported violations and police enforcement of the graduated driver license law.

Method: Statewide telephone surveys of representative samples of parents and teenagers were conducted in February to April 2010 and March to June 2011.