Beyond the Breathalyzer: The Truth About Marijuana, Pills, and Driving

Let's be clear: we all know not to drink and drive. The message has been drilled into us for decades. But in 2025, the conversation about impaired driving needs to go much, much further.

The truth is, driving under the influence (DUI) isn't just about alcohol. With more legalized substances and a world full of prescription medication, a simple over-the-counter pill or a moment of poor judgment could lead to a life-changing tragedy. Your ability to drive can be compromised by a wide range of substances, and the law is catching up.

Here is the truth you need to know about impaired driving.

1. The Dangers of Driving High on Marijuana

With marijuana legalized in many states, a dangerous myth has taken hold: that driving while high is safer than driving drunk. This is a life-threatening lie.

The Facts:

• It Impairs You: Research shows that driving while high impairs your judgment, slows your reaction time, and decreases your coordination. It affects your ability to track lanes, maintain a proper following distance, and react to emergencies.
• It's a DUI: It is illegal to drive under the influence of marijuana in every state. In some states, a specific THC level can lead to an automatic DUI, even if you feel fine. A DUI conviction can cost you over $10,000 and lead to jail time.
• It's Common: Marijuana is the second most common substance found in crash-involved drivers. It's an issue law enforcement is taking very seriously.

2. The Hidden Peril of Pills and Prescription Drugs

This is the most overlooked form of impaired driving, and it can happen to anyone. Even if your medication is legally prescribed, if it impairs your ability to drive, it is a DUI.

The Facts:

• Slowing You Down: Drugs like opioids, sedatives (Xanax), and even certain antidepressants can cause drowsiness, dizziness, and slow your reaction time—all of which are major factors in car accidents.
• Over-the-Counter Danger: Don't assume your cold medicine is safe. Antihistamines and other common over-the-counter pills can cause significant drowsiness. Always read the warning labels.
• It's a DUI: Law enforcement is trained to spot the signs of drug impairment. A drug recognition expert (DRE) can determine if you are under the influence of drugs, leading to the same legal consequences as a drunk driving conviction.

3. The Enduring Threat of Alcohol

Despite decades of public awareness campaigns, alcohol-impaired driving remains a top killer on our roads, accounting for nearly a third of all traffic fatalities in the U.S.

The Facts:

• Your BAC: The average person can reach a legal BAC of 0.08% with as few as two standard drinks.
• The Consequences: A DUI conviction can cost over $10,000, with heavy fines, legal fees, license suspension, and mandatory insurance increases. The human cost—the potential for injury or death—is immeasurable.

The Only Safe Choice: Zero Tolerance

The truth is simple: if a substance affects your ability to focus, react, or make good decisions, it is a dangerous substance behind the wheel. The best way to stay safe and avoid a DUI is to adopt a personal policy of zero tolerance.

The next time you get in your car, remember this: the most important thing you can ever do is make a plan to get home safely—and that plan starts with staying sober and alert.

DMV TestMaster's Driver Safety Warning

At DMV TestMaster, our mission is to provide you with the knowledge to make smart, safe choices on the road. Understanding impaired driving is a vital part of being a responsible driver.

[Visit DMVTestMaster.com to access expert driver education, lessons, and practice tests.]