The 100 Deadliest Days for Teen Drivers

The 100 deadliest days for teen drivers are the roughly 100 days between Memorial Day and Labor Day, when teen-related crash deaths climb. From 2019 to 2023, more than 30% of the 13,135 people killed in crashes involving teen drivers died during this summer window, according to AAA.

The "100 Deadliest Days" is a term the AAA Foundation for Traffic Safety, a nonprofit research arm of AAA, uses for this stretch of summer. The point is not to scare you off letting your teen drive. It is to show you exactly when the danger concentrates so you can tighten the rules during the months that matter most.

Why is summer so dangerous for teen drivers?

Summer is dangerous because school lets out and teens drive more, often at night, with friends in the car, and for recreation rather than routine trips. These conditions stack the exact risk factors that cause crashes onto the least experienced drivers on the road, right when they spend the most unsupervised time behind the wheel.

During the school year, a teen’s driving is mostly structured: to school, to practice, to a shift, and home. Summer erases that structure. The trips get longer, later, and more social, and a new driver is suddenly making dozens of small judgment calls a day without an adult in the passenger seat.

The AAA Foundation links the summer spike to more nighttime driving, more passengers, and highway trips that outpace a new driver’s experience. Each of those is a known risk factor on its own. Summer is dangerous because it combines all of them at once, and it does so for the drivers least equipped to handle them.

How much do teen crash deaths rise during the 100 deadliest days?

During the summer window, an average of 8 people are killed each day in crashes involving teen drivers, compared with 7 per day the rest of the year, according to AAA. In 2023, about 860 of the roughly 2,897 people killed in teen-involved crashes died during these 100 days.

That daily jump sounds small until you multiply it across 100 days and a full summer of new drivers. The toll also reaches well beyond teens themselves: the count includes passengers, people in other vehicles, and pedestrians, which is one reason we cover why state-minimum liability is rarely enough for a household with a new driver on our coverage guide.

For the year-round picture behind these summer numbers, including why insurers rate a brand-new driver as the highest risk on the road, see our companion teen driving statistics roundup.

What are the biggest summer risks, and what can parents do?

The biggest summer risks are teen passengers, nighttime driving, speeding, and phone distraction. Carrying only teen passengers raises the fatality rate in a crash by 51%, AAA found. Parents can set passenger and night limits, require seat belts and phones away, and keep logging supervised practice through the summer.

The passenger effect is the one parents most often underestimate, and it runs the wrong way with each additional teen in the car. That is why nearly every state’s graduated licensing law caps young passengers during the intermediate phase, explained in our graduated driver licensing breakdown and by state on the licensing hub.

• Cap passengers. Start with no non-family teen passengers, then loosen slowly as experience grows.
• Limit night driving. Crash risk climbs after dark, so set an earlier curfew than the state requires.
• Kill the phone habit. Distraction is a top summer factor; see our teen distracted driving guide.
• Put it in writing. A parent-teen driving agreement turns vague worry into specific, agreed rules.
• Keep practicing. Supervised summer miles on highways and at night build the exact skills the season demands.

Safer summer habits and a healthier premium pull in the same direction. The rules that keep your teen alive also protect their record, which is what eventually lowers cost. When you are ready to review coverage, discounts, and telematics options for a new driver, talk to an agent who works with families every summer.