Have you ever felt like you had amnesia after a long road trip? You probably wondered why it happened. You may have even asked yourself how you made it to your destination in one piece. It’s called highway hypnosis, and it’s a real — and potentially deadly — phenomenon.
Highway Hypnosis Defined
Highway hypnosis is a phenomenon motor vehicle drivers experience while traveling on long stretches of road or routes they’ve driven repeatedly in the past. Also known as driving hypnosis and “white-line fever,” the mental state can be likened to a trance, an altered state of consciousness in which you disassociate from your surroundings.
One sign that you’ve fallen under the spell of highway hypnosis is when you arrive at your destination and have trouble recollecting the journey — what driving decisions you made and what you saw or experienced en route. Despite your zoned-out condition, you manage to operate your vehicle and arrive safely at your destination.
Other phenomena you may experience with a case of highway hypnosis include arriving at a destination much sooner than you expected, suddenly realizing while driving that you’ve traveled a greater distance than you should have, or ending up at an entirely different destination.
Signs of Highway Hypnosis
Strange things can happen in the moments before the onset of a highway hypnosis episode. Your thoughts may start to drift. Your brain may become foggy and struggle to concentrate. Your eyelids may feel heavy, or you may blink more than usual as you approach a trance-like state.
Once you’re in that altered state, the only available clues might be missing an exit or road sign, riding over rumble lines or reflectors, or another driver honking their horn because your vehicle drifted into their lane. When something snaps you out of it, the incident may be enough of a shock to prevent it from happening again.
Causes of Highway Hypnosis
Highway hypnosis mostly occurs while driving routes that feature long stretches of straight roadway with monotonous scenery at a constant speed. But it’s also common at night, when darkness obstructs your view of the passing landscapes.
Inattention may be a primary contributor. A 2004 study pointed to the human oculomotor system, which controls eye movement. After a long period of staring at the same scenery, the brain relies less on what the eyes see and more on generalized patterns and stimuli. This shift in attention makes the brain less alert.
Highway hypnosis may also be linked to what’s known as “procedural memory,” which you rely on for tasks like tying your shoes, riding a bike, and (you guessed it) driving. When you’re traveling in a vehicle and over-fixate on the procedures, the autopilot switch in the brain turns on, which decreases awareness.
Along with boring, repetitive, or dark surroundings, the strobe-like effect of headlights from vehicles traveling in the opposite direction and the white lines edging or dividing the road, which are sometimes accented with reflective markers, may also have a role in inducing a hypnotic state, particularly if your eyes focus on them too much.
Add to that the relaxing white noise of highway travel, such as the constant hum of the motor and the ba-dump, ba-dump of tires rolling over grooves in the pavement, and it’s easy to understand how a driver could be lulled into a state of pseudo consciousness.
Drowsiness further increases your chances of experiencing highway hypnosis. A sleepy brain may also be tempted to go into autopilot, reducing your awareness of the road ahead and behind you. Fatigued driving by itself causes accidents; the two combined equals a dangerous scenario.
FAQ
Why Is Highway Hypnosis Dangerous?
Highway hypnosis is considered a form of distracted driving, a category that includes talking on the phone, texting, eating, and adjusting the vehicle’s controls. If fatigue plays a role, it fits under the heading of drowsy driving. Regardless, driving in this state can result in accidents that cause property damage, injuries, or even death.
There are no motor vehicle crash statistics that specifically address the consequences of highway hypnosis. However, there is plenty of data on distracted and drowsy driving.
The National Highway Traffic Safety Administration reports that distracted driving killed 3,308 people and injured 289,310 others in 2022. In some of these crashes, “inattention” and being “lost in thought or daydreaming” — both connected to highway hypnosis — were reported to be contributing factors.
From 2017 to 2021, 17.6% of all fatal crashes were caused by drowsy drivers, with an estimated total of 29,834 deaths.
Who Is Most at Risk of Driving With Highway Hypnosis?
People in careers that involve long hours on the road are most susceptible to highway hypnosis. If you make a living driving a truck, bus, taxi, or delivery van, you face a higher risk. However, it could strike even if you work in an office with an hour-long commute and take the same route every day.
How Do You Prevent Highway Hypnosis?
Highway hypnosis isn’t entirely out of your control. In fact, you can take many precautions to prevent it from happening to you. Here are a few:
- Get sufficient sleep before departing on a long drive
- Bring a companion to interact with
- Take plenty of breaks while on the road
- Drink coffee, tea, or other caffeinated beverages
- Keep yourself hydrated (dehydration can lead to fatigue)
- Schedule your journey so you spend less time on the road at night
- Drive with the windows open or turn on the AC
- Turn off the cruise control
- Listen to music, podcasts, or a news program
- Alter your route to avoid monotonous roadways
As with all the perils that drivers face on the road, awareness is key. If you understand what highway hypnosis is, the factors that lead to it, and how to prevent it, it’s less likely to happen to you.
Get Help After a Crash
If you’ve been involved in an accident due to highway hypnosis or any other cause, contact Ramsey Law Group for a consultation. An experienced lawyer for highway accidents can inform you of your rights and guide you through the legal process.