One third of teenagers who die between the ages of 16 and 19 are killed in vehicle crashes. Of those, 16 and 17 year olds have three times the likelihood of a crash than older teens. The first 12 months for a novice driver is the riskiest period. Here's how parents and caregivers can make a big difference to reduce risk. Start with a parent-teen driving agreement. The CDC has one that you can find on the National Foundation for Teen Safe Driving "Parent Tips" page. You can also learn dozens of effective, tried and true ways of teaching your teen to drive safely with information found there, or on the Liberty Mutual "Coach Your Teen Driver" webpage. Discover how to prevent bad driving habits before they start, the mistakes parents often make when coaching teens to drive, and much more.