Safe Driving

Safe Driving

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What the Data Shows About When Impaired Driving Happens

A look at the trends behind impaired driving risk

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Selina Paul

Writer

Photo by Reyazul Haque on Unsplash 

In the U.S, approximately one person is killed every 44-minutes in a drunk driving crash.  

Drunk driving is a threat that exists 365 days a year. Whether it’s a regular Tuesday commute or a night of celebration, the circumstances in which someone decides to drive while impaired can arise at any time, with consequences that reach far beyond the person who gets behind the wheel. 

While the threat of drunk driving is always present, the data show that certain days, hours, and times of the year are accompanied by a spike in drunk driving collisions, making them particularly dangerous. 

The Most Dangerous Times to Drive

Night driving poses a number of unique dangers, including reduced visibility and a higher count of drowsy drivers. Most notably, however, nighttime is when drunk drivers are most prevalent on the roads.   

“Alcohol involvement in fatal crashes is nearly three times higher at night than during the day.”  

The risk of impaired driving increases further on weekends, with 28 percent of drivers in fatal crashes on weekends being alcohol-impaired, compared to only 16 percent of drivers during weekday crashes. This gap is directly tied to the weekend’s increased opportunity for more social drinking and later nights.  

Police-reported data further narrows this danger zone, showing that impaired driving incidents peak between midnight and 3 a.m., particularly on Fridays and Saturdays. These are the hours when many bars and events let out, there is still significant traffic volume, and drivers are at or past their BAC peak from a night of drinking.  

The “100 Deadliest Days” for Drivers  

Warmer months like June through September see the highest number of fatal alcohol and drug-involved collisions each year. This stretch of time roughly spanning Memorial Day to Labor Day, includes more long-haul drives, more social gatherings, more students and families heading out, and more impaired drivers on the road. Labor Day weekend, in particular, is one of the deadliest holidays for impaired driving - a point where celebration, fatigue, and end-of-summer travel all collide at once. 

The Only Truly Safe BAC is 0% 

Alcohol affects everyone differently, but the result of drunk driving is always the same: the risk of an accident goes up dramatically.  

“At a BAC of .15, drivers are at least 12 times more likely to crash than drivers with a BAC of zero” 

Alcohol impairs a driver's ability to safely operate a vehicle by dulling two things driving depends on most: judgment and muscle control. Many people assume they can gauge their own fitness to drive through tasks like standing still and walking straight, but physical coordination isn't the biggest indicator - it's cognition. 

“[T]he greatest percentage of alcohol-related collisions result from faulty thinking during the identification, prediction and decision parts of the driving task and not as a result of poor execution (steering, braking, etc.)” 

Even a small amount of alcohol can slow reaction time, narrow focus, and distort judgment long before someone feels "drunk." That's what makes drunk driving so dangerous: the very faculties needed to recognize impairment are the ones alcohol compromises first. Choosing not to drive after drinking isn't just about following the law, it's about trusting that your own assessment of your fitness to drive is exactly the thing you can no longer rely on. 


You don't always have the option to stay off the road during the times when impaired driving is more common, but you can control how alert you are to it. Keep a longer following distance, especially at night, and watch for warning signs like swerving, inconsistent speed, or delayed reactions at lights. If you spot a driver who seems impaired, resist the urge to pass or get ahead of them, put distance between your car and theirs, and pull over to call it in rather than trying to manage the situation yourself. 

Behind every impaired driving statistic is a person, a family, and a community affected by a preventable crash. By recognizing the risks and planning ahead, drivers can help ensure that a night out does not become a lifelong tragedy. 


Sources: 

https://sgi.sk.ca/handbook/-/knowledge_base/drivers/alcohol 

https://www.nhtsa.gov/risky-driving/drunk-driving 

https://www.bactrack.com/blogs/expert-center/35042821-the-most-dangerous-times-on-the-road?srsltid=AfmBOoqPyuT1-RN85UN_n0UIsfNHV8ejdUIo-9db5DXW2R3aq05hpAvn 

https://www.nhtsa.gov/book/countermeasures-that-work/alcohol-impaired-driving/understanding-problem

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