The percentage of teens in high school (aged 16 or older) who drove when they had been drinking alcohol decreased by 54 percent between 1991 and 2011.

Nine out of 10 high school teens were not drinking and driving during 2011.

For the study, the Centers for Disease Control and Prevention (CDC) analyzed data from the 1991-2011 national Youth Risk Behavior Surveys (YRBS).

The national survey asked high school students if they had driven a vehicle when they had been drinking alcohol one or more times during the 30 days before the survey.

The study also found out that teens were responsible for approximately 2.4 million episodes of drinking and driving a month in 2011.

Parents play a crucial role in keeping their teens safe on the road.

They can model safe driving behavior and set and enforce "rules of the road" by completing a parent-teen driving agreement with their teens.

Safe driving habits for teens include never drinking and driving, following state Graduated Driver Licensing systems, and wearing a seat belt on every trip.

For more safe driving tips,click here.

For more information on Drinking and Driving, click here.