A new study by AAA finds teens who drive with friends in the car are at significantly greater risk for fatal accidents.

The study found that the risk of 16- and 17-year-old drivers being killed in a crach increases with each additional passenger under the age of 21.

The study's findings note the fatality risk:

• Increases 44% when carrying one passenger younger than 21.
• Doubles when carrying two passengers younger than 21.
• Quadruples when carrying three or more passengers younger than 21.
• Carrying at least one passenger age 35 or older reduces a teen driver's risk of death by 62%.

Source: USA Today