Do Hands-Free Phone Conversations Actually Help Drivers?
Over the past decade, almost every state across the country has been rewriting its distracted driving laws. Because of the uptick in phone-related distracted driving incidents, lawmakers have been focused on moving toward hands-free requirements. Today, most states prohibit you from holding a phone while behind the wheel. This means only using Bluetooth or speakerphone (or some other hands-free setup).
The intention behind these laws is good. But should we be more critical of the assumption that’s driving them? A growing body of research is suggesting that hands-free phone calls could be quite distracting as well.
How the Laws Changed and Why
The shift toward hands-free legislation made intuitive sense at the time. If the problem with talking on the phone while driving is that one hand is occupied and your eyes occasionally drift to the screen, then removing the phone from the equation physically seems reasonable. Put the phone in your pocket or on the dash, connect to Bluetooth, and keep both hands on the wheel. Problem solved!
States moved in this direction through the 2010s and into the 2020s. In fact, many jurisdictions now treat handheld phone use as a primary offense, meaning officers can pull you over specifically for that behavior without needing another reason. By most measures, this policy shift seems like progress.
But legislation and safety aren’t always the same thing, and the gap between the two is where things get interesting.
The Problem Hands-Free Laws Don’t Solve
The reality, according to a growing body of research, is that the danger of talking on the phone while driving isn’t primarily about your hands. It’s about your brain.
Cognitive distraction is the term researchers use to describe what happens when your mental attention is divided between driving and something else. Driving requires constant, active processing. You’re:
- Reading road signs
- Monitoring what other drivers are doing
- Anticipating what the car ahead might do
- Adjusting your speed
- Watching for pedestrians and cyclists
Driving is a demanding cognitive task that we’ve simply gotten so used to that it stops feeling like one. When you add a phone conversation to that cognitive load, something has to give.
Studies from the AAA Foundation for Traffic Safety and multiple university research programs have consistently found that hands-free phone conversations impair driving in measurable ways. Reaction times slow and drivers miss visual cues they would normally catch. Not only that, but their field of attention narrows. (This phenomenon is sometimes called inattentional blindness, where the eyes are technically aimed at the road but the brain isn’t fully processing what they’re seeing.)
The reason a phone conversation is more cognitively demanding than talking to a passenger sitting next to you comes down to a few things. But the main one is that a passenger shares your environment. They can see what you’re dealing with on the road and naturally pause the conversation when things get complicated. A person on the other end of a phone call has no idea what’s happening around you and keeps talking regardless.
The Real World Consequences
Distracted driving has become one of the major contributors to accidents and fatalities on American roads, and the numbers reflect a problem that hands-free laws alone haven’t been able to solve. Thousands of people are killed in distraction-related crashes every year, and a far greater number are seriously injured. Those injuries translate directly into personal injury lawsuits, insurance claims, and legal battles that affect everyone involved for years afterward.
The challenge is that cognitive distraction leaves almost no paper trail. A driver who was on a hands-free call when they caused an accident wasn’t technically breaking the law in most states. Phone records can sometimes establish that a call was in progress, but the legal framework around hands-free use makes it difficult to hold drivers accountable for this.
What Actually Helps
The most effective solution to phone-related distraction behind the wheel is also the most straightforward one: Don’t have phone conversations while you’re driving. Not handheld or hands-free. Let calls go to voicemail and return them when you’re parked. And if you’re expecting an important call, pull over before answering.
Most smartphones now have driving modes that silence notifications and send automatic replies to incoming messages and calls. This lets the other person know you’re driving and will respond later. These features exist because the research on phone-related distraction is compelling enough that the companies building the phones felt like they had to address it. Using them is one of the most effective things you can do.
Adding it All Up
Hands-free laws were a step in the right direction in the sense that they reduced one category of physical distraction. But treating them as a final solution to the problem overstates what they actually accomplish. The cognitive load of a phone conversation doesn’t go away just because your hands are free.
The standard worth holding yourself to isn’t whether something is legal. It’s whether it’s actually safe. On that question, the evidence is pretty clear that we need to pull over to have a phone conversation.
I’m a single mother of 2 living in Utah writing about startups, business, marketing, entrepreneurship, and health. I also write for Inc, Score, Manta, and Newsblaze