Why the Research Matters More Than Intuition
Most drivers believe they're better at multitasking than average — but driving safety research tells a different story. Studies from the National Highway Traffic Safety Administration (NHTSA) and independent institutions have consistently found that phone use while driving impairs performance in ways drivers themselves rarely notice or acknowledge. Understanding what the evidence actually says — rather than what feels true — is the first step toward building safer habits.
This article examines the most common beliefs drivers hold about phone use and distraction, and sets them against what peer-reviewed research and crash data actually show. For a broader framework on anticipating hazards before they become emergencies, see our guide to defensive driving.
Myth
Hands-free phone use is basically safe because both hands stay on the wheel.
Fact
Hands-free calls still create significant cognitive distraction that impairs reaction time and situational awareness.
The steering wheel is only part of the driving task. Research from the AAA Foundation for Traffic Safety found that hands-free calls impose a moderate-to-high cognitive workload on drivers — reducing their ability to detect and respond to hazards even when their hands are correctly positioned. The conversation itself pulls mental resources away from driving, not the act of holding a device.
Myth
A quick glance at a text only takes a second, so it barely affects driving.
Fact
The average driver takes their eyes off the road for approximately five seconds to read or send a text — enough time to travel the full length of a football field at highway speeds.
NHTSA data has repeatedly quantified this risk: at 55 mph, five seconds of eyes-off-road time means traveling roughly 400 feet without any meaningful visual input. At that distance, a stopped vehicle, a child on a bike, or a merging car can go from manageable to unavoidable. The brevity of the glance doesn't reduce the hazard — it just makes it feel less consequential to the driver.
Myth
Voice-activated assistants are safe to use because they're designed for the car.
Fact
Using voice commands while driving still produces measurable cognitive distraction, and the impairment can linger for up to 27 seconds after the task ends.
A study commissioned by the AAA Foundation found that mental workload from voice-activated tasks — including composing texts or adjusting navigation by voice — persists well after the interaction completes. During those residual seconds, drivers scan less, respond more slowly, and are more likely to miss sudden events. In-vehicle voice systems rated as complex in that research produced the highest levels of distraction.
Myth
Experienced drivers can safely handle phone use because they've developed strong driving habits.
Fact
Driving experience does not neutralize the cognitive load imposed by phone conversations; experienced drivers show similar impairment patterns to less experienced ones.
Automaticity — the ability to perform a task without conscious thought — applies to mechanical skills like steering and braking, not to situational processing. An experienced driver still needs to consciously interpret a complex intersection, a merging truck, or a child near the road. A concurrent phone conversation competes for exactly that conscious processing capacity, regardless of years behind the wheel.
Myth
As long as you pull over to dial and then talk hands-free, you're following the law everywhere.
Fact
Laws vary significantly by state; many jurisdictions restrict all handheld use, and some extend restrictions to hands-free use for certain drivers, such as those with learner's permits or commercial vehicle operators.
There is no single federal standard governing handheld phone use for passenger vehicle drivers. Each state sets its own rules, and several have enacted stricter laws in recent years. Drivers who travel across state lines should verify local regulations rather than assume one state's rules apply everywhere. Novice drivers and commercial drivers are subject to additional federal and state-level restrictions in many cases.
The Attention Problem Driving Can't Share
Driving is a high-demand cognitive task. It requires constant scanning, anticipation, and split-second decision-making. When a driver diverts attention — even mentally, without looking away — the brain must rapidly switch between tasks rather than run them simultaneously. Neuroscience research describes this as inattention blindness: a driver can be looking directly at the road and still fail to process what's there.
~400 ft
Distance covered during a 5-second phone glance at 55 mph
According to NHTSA distracted driving data, this is approximately the length of a football field traveled eyes-off-road.
27 seconds
Residual cognitive impairment after a voice-activated task
AAA Foundation for Traffic Safety research found measurable distraction persisting up to 27 seconds after completing an in-vehicle voice command.
4x
Increased crash risk while using a handheld phone
Research published in peer-reviewed traffic safety literature estimates handheld phone use roughly quadruples crash risk compared to undistracted driving.
This phenomenon explains why even experienced drivers on familiar roads can miss a red light or a pedestrian stepping off a curb mid-conversation. The risk isn't purely about where your eyes are — it's about where your mind is. To understand how this compares with other forms of impairment, our piece on distracted vs. impaired driving breaks down the differences in driver performance.
Notification Alerts Are Also a Distraction
Even when a driver doesn't pick up their phone, hearing or feeling a notification creates a cognitive pull — a mental interruption that research associates with reduced lane-keeping accuracy. Simply silencing your ringer is not enough if the phone remains within reach and view. Place it in a bag, glove compartment, or back seat before driving.
Building a habit of stowing your phone before starting the engine — not just silencing it — removes the temptation entirely. Notifications create anticipatory distraction even when a driver doesn't act on them.
