Have you ever felt really sleepy behind the wheel? It’s more dangerous than you might think. Drowsy driving isn’t talked about as much as drunk driving or texting while driving. But it’s just as risky.
When we’re tired, our brains don’t work as fast. We might miss seeing a stop sign or not react quickly if a car stops in front of us. Even a few seconds of nodding off can lead to a crash.
This article delves into the underestimated dangers of drowsy driving, its devastating consequences, and actionable steps we can all take to ensure our roads are safer for everyone.
What is Drowsy Driving?
Drowsy driving is when someone drives while feeling very tired or sleepy. It’s like trying to watch a movie late at night and your eyes keep closing, but imagine this happening when you’re driving a car. Sounds scary, right?
When you’re drowsy:
- Your reaction time slows down. This means it takes longer to brake or steer away from danger.
- You might miss important things on the road, like signs or other vehicles.
- It’s harder to make good decisions quickly.
Drowsy driving can be caused by:
- Not getting enough sleep the night before.
- Driving for too many hours without a break.
- Taking medicines that make you sleepy.
- Medical conditions or disorders that affect your sleep.
It’s a big problem because you might not even realize you’re too tired to drive safely. And just like driving after drinking alcohol, drowsy driving can lead to accidents.
The Impact of Drowsy Driving
Drowsy driving may not always grab the headlines, but its consequences can be severe. Let’s dive into the numbers to truly understand its impact:
1. Fatalities and Injuries:
- In 2021, drowsy driving was responsible for 684 deaths.
- According to the NHTSA, in 2017, there were 91,000 police-reported crashes that involved drowsy drivers. As a result of these crashes, an estimated 50,000 people were injured, and close to 800 lost their lives.
- According to the AAA Foundation, a concerning 16.5% (or one in six) of fatal crashes involve a drowsy driver.
- When it comes to crashes leading to hospitalization, 13.1% (or one in eight) are due to drowsy driving, and it’s the cause behind 7% (or one in fourteen) of all crashes where a passenger vehicle is towed.
2. When and How Drowsy Driving Crashes Happen:
- These crashes can happen any time, day or night. However, they are most frequent between midnight and 6 a.m., as well as in the late afternoon. This is because our internal body clock, known as the circadian rhythm, naturally dips during these times, making us feel sleepier.
- These accidents often show a distinct pattern: a lone driver, without any passengers, going off the road at high speeds. In many cases, there’s no evidence that the driver tried to brake.
- A significant portion, 57% to be precise, of drowsy driving crashes saw drivers drifting into other lanes or completely off the road.
3. Age and Demographics
- Young drivers between the ages of 16-24 are nearly double as likely to be in a drowsy driving crash compared to those aged 40-59.
- Men seem to be at a higher risk, with two out of every three drowsy driving crashes involving male drivers.
- Here’s some good news: having a passenger in the vehicle can make a difference. Cars with a passenger were about 50% less likely to be part of a drowsy driving-related crash.
4. How Often Drowsy Driving Happens:
- Approximately 1 out of 25 adults aged 18 years and older surveyed reported that they had fallen asleep while driving in the past 30 days.
- Individuals who snored or slept 6 hours or less per day were more likely to fall asleep while driving.5
These statistics shine a light on the pervasive issue of drowsy driving. Understanding the risks can be a stepping stone to safer roads for everyone.
The Warning Signs of Drowsy Driving
Watch out for these key signs that you might be too tired to drive safely:
- Frequent Yawning and Difficulty Focusing: This includes heavy eyelids, constant yawning, and rubbing your eyes often.
- Memory Gaps: Not remembering the last few exits or landmarks suggests you’re not alert.
- Drifting and Missed Signs: If you’re unintentionally changing lanes, missing traffic signs, or hitting the rumble strip, your attention is waning.
- Mood Shifts: Feeling unusually restless, irritable, or making risky decisions indicates fatigue.
- Strong Urge to Rest: Thinking about pulling over for a break or struggling to keep your head up are clear indicators.
If you spot these signs, it’s vital to stop and rest. Always prioritize safety on the road.
Groups Prone to Drowsy Driving
Certain groups of individuals are more susceptible to drowsy driving due to various factors ranging from lifestyle choices to job requirements. Here’s a closer look:
- Shift Workers: Those who work night shifts, rotating shifts, or long hours often disrupt their natural sleep patterns, making them more prone to fatigue during odd hours.
- Young Drivers: Especially those between the ages of 16-24, they often have irregular sleep patterns and might underestimate the risks, making them more susceptible to drowsy driving.
- Commercial Drivers: Truck drivers, bus drivers, and others who spend long hours on the road can easily become fatigued, especially if they’re pushing to meet tight deadlines.
- People with Sleep Disorders: Individuals with untreated sleep conditions, such as sleep apnea or insomnia, might not get quality rest, increasing their drowsiness during waking hours.
- Medicated Individuals: Some over-the-counter and prescription medications have side effects that cause drowsiness. Those who take such medicines are at a higher risk when behind the wheel.
Awareness is the first step. Recognizing that you might belong to one of these high-risk groups can prompt you to take precautions and ensure safer roads for everyone.
Drowsy Driving and Drunk Driving
Our bodies thrive on consistent, restful sleep. Without it, daily functions start to falter, and cognitive impairment sets in. This impairment doesn’t only affect your mood or productivity; it has a pronounced impact on your driving abilities, making you less alert and compromising your coordination, judgment, and reaction time.

Studies have drawn alarming parallels between sleep deprivation and alcohol consumption:
- 18 Hours Awake: Being up for approximately 18 hours straight can leave a person with a cognitive impairment similar to someone with a blood alcohol content (BAC) of 0.05%. To put it in perspective, this is already over halfway to the legal limit in most states.
- 24 Hours Awake: Pushing through an entire day without sleep, or being awake for roughly 24 hours, is akin to having a BAC of 0.10%. This level exceeds the legal limit of 0.08% BAC recognized in all states.
Just as we understand the dangers of drunk driving and advocate against it, it’s crucial to recognize that drowsy driving poses similar risks. Both scenarios are hazardous and can result in tragic accidents. The message is clear: Sleep is not just a luxury; it’s a necessity, especially before getting behind the wheel.
Strategies to Stay Alert on the Road
Avoiding the perils of drowsy driving requires a proactive approach. Here are some effective strategies to ensure you remain alert and safe on the road:

- Prioritize Sleep: Ensure you get the recommended 7-9 hours of sleep for adults. This helps restore mental and physical energy.
- Plan Breaks for Long Drives: Schedule regular stops every 2 hours or 100 miles to stretch, grab a snack, or simply rest.
- Avoid Alcohol and Sedatives: Even if they’re consumed hours before driving, they can increase drowsiness and impair reaction times.
- Stay Hydrated: Drink enough water throughout the journey. Dehydration can contribute to fatigue.
- Travel with a Companion: Another person can help share the driving responsibility, engage in conversation to keep you awake, and alert you if they notice signs of drowsiness.
- Recognize the Signs: If you start yawning frequently, can’t focus, or find it hard to keep your eyes open, pull over and take a break.
- Use Public Transport or Rideshare: If you know you’re too tired to drive, opt for public transportation or book a rideshare service.
- Consult with a Doctor: If you constantly feel drowsy during the day or suspect you might have a sleep disorder, seek medical advice.
Staying alert on the road isn’t just about avoiding drowsiness; it’s about prioritizing your safety and the safety of those around you.