TRENTON, N.J. --- A first-in-the-nation law in New Jersey will require new drivers ages 21 and younger to display identifying decals on their vehicles.

The new law, set to go into effect next year, was signed into law by Gov. Jon Corzine on April 15.

The decals are expected to be small reflective rectangles attached to the front and rear license plates to assist police in enforcing restrictions on probationary drivers, the Associated Press reported.

With the help of the decals, police can more easily determine whether teenage drivers are violating state driving curfews and passenger restrictions.

Officials are considering the use of velcro on the decals so that they can be removed by other drivers using the car.

The law was spurred by the death of a 16-year-old honor student in Morris County. Kyleigh D'Alessio was killed in 2006 while riding in a car driven by a teenager with a probationary license.