After the horrific car crash of “Jackass” star Ryan Dunn early Monday morning, police have revealed that he was driving with a blood alcohol content (BAC) of .196—twice the legal limit.

Dunn was reportedly traveling 140 mph on a 55 mph road when he crashed his Porsche 911 GT3 through a guardrail and into the woods where it hit a tree and burst into flames. Dunn and his passenger, Zachary Hartwell, died at the scene. Crashes like this serve as a sad reminder of the dangers of driving drunk.

Apparently, Dunn had an earlier DUI crash a few years ago, but was able to clear his record through court requirements and wasn’t required to install an alcohol interlock device on his vehicle. If he had survived this crash, Dunn’s future vehicles would’ve been mandated to have this device for at least one year after his license was reinstated.

Alcohol interlocks are one way the government is hoping to reduce the 11,000 deaths each year from drunk driving. Forty-nine states have some type of interlock requirement and 11 states have mandatory provisions after the first conviction. The system requires the driver to blow into the device to check for alcohol for the vehicle to start.

Currently, the National Highway Traffic Safety Administration (NHTSA) is conducting their “Over the Limit, Under Arrest” campaign through July 4th in an effort to ticket drunk drivers before a deadly accident occurs.

This week and next week are full of graduation parties, 4th of July picnics, and other summer festivities. Make it safe for you and others on the road by following important these tips.

• If you are planning to drink alcohol, designate a sober driver before going out.
• If you are impaired, do not drive. Hail a taxi, use mass transit, or call a sober friend or family member to get you home safely.
• Plan ahead and pack a bag to stay over someone’s house if you know you will be drinking.
• Report impaired drivers you see on the roadways immediately to law enforcement by calling 911.
• Always wear your safety belt while in a car or use a helmet and protective gear when on a motorcycle.
• If you see someone about to drive drunk or ride with someone who is impaired, take the keys and help them get to where they are going safely.

Learn more about car safety.