How do the police know you’re texting while driving?

How do police prove texting while driving?

Police can prove texting while driving by reporting what they see, how your car moves, and, after a serious crash, phone or device evidence. An officer may write a ticket after seeing the phone in your hand, watching you look down repeatedly, or observing unsafe driving tied to distraction.

Here are five ways the police know when your eyes are on your phone rather than the road.

They see the phone in your hand.

Don't assume your tinted windows are going to hide your phone or that you’re holding it at an angle that can’t be seen. Officers know how to spot a phone in your hand and will pull you over if they see it.

An officer patrolling on a motorcycle can stop next to you and get a clear view into the driver’s compartment. It’s pretty easy to see whether or not you’re using your phone in that situation. And you might not notice them until they’re right next to you.

You are constantly looking down.

Are you being sneaky by keeping your phone on your lap or in the center console? Constantly looking down and to the side, especially if you have only one hand on the steering wheel, can be a dead giveaway.

In certain states, officers need to see the phone before pulling someone over for texting and driving, but that doesn't mean you can't be pulled over for other things. If you appear distracted with your eyes moving off the road, you can be pulled over.

Most states with anti-texting legislation do allow officers to pull over a driver for a texting offense alone.

The glow from your screen gives you away at night.

The soft glow from your screen makes it possible to type at night; it also makes it possible for police to see who is using a cell phone in the car. The blue-toned light that emanates from your phone looks a lot different than that of your car’s interior lights. A passing officer can easily tell the difference and can even see it from a distance, and it could result in a ticket.

Officers see you weaving, and your speed fluctuates.

A good sign you’re distracted is weaving in your lane or repeated fluctuations in speed as you take your eyes off the road to read or send a text. Even if the officer doesn’t see the phone, this sort of erratic driving will catch their attention.

If they don’t actually see the phone, erratic driving is dangerous and could earn you a ticket either way.

The police are watching you from above.

Police no longer rely only on officers in regular patrol cars to catch drivers using their phones. Departments now use unmarked vehicles, checkpoints, and coordinated enforcement campaigns to gain a clearer view inside vehicles and identify drivers who are texting, scrolling, or holding a phone.

For example, in April 2025, New York State Police used marked patrol cars and vehicles with concealed identities during Operation Hang Up. Officers issued 4,607 distracted-driving tickets during the eight-day campaign.

These enforcement efforts are part of a broader push to reduce distracted driving. NHTSA reports that distracted-driving crashes injure 18 people every 30 minutes and kill about one person every 2.5 hours. During Distracted Driving Awareness Month, police departments increase enforcement to identify and stop drivers using their phones.

What happens when you get caught texting and driving?

If you are caught texting while driving, you may face a fine, points on your license, or both, depending on your state. Your insurance company may also treat the ticket as a sign of risky driving, especially if it is listed as a moving violation on your record.

Penalties for texting and driving vary by state. For example, Michigan cellphone tickets carry a $100 fine and/or 16 hours of community service for a first offense. Other states may also have fines and/or points attached to violations.

A texting ticket can also affect your car insurance. If your state treats texting while driving as a moving violation, your insurer may count it as a minor infraction. That could mean:

Losing a good driver discount
Paying a higher premium at renewal
Facing a bigger rate increase if you already have other violations
Seeing a larger impact after multiple texting tickets

In some states, texting tickets aren't counted as moving violations, but in other states, including Arizona, texting and driving is considered a moving violation. "All violations fall into one of two categories: minor violations and major violations," explains Charlotte Burr, co-owner of AZ Insurance Team in Tempe, Arizona. Most insurance companies consider cellphone tickets a minor violation, but that doesn't mean they come without a price. "If someone has a minor violation, it may raise their premiums a little -- maybe 10 to 20%."

Texting while driving may also be the basis for more serious charges, such as careless driving or reckless endangerment, if it leads to an accident. Those can be major violations, racking up more points and higher auto insurance premiums.

The biggest risk is not the ticket. Texting while driving can cause a serious crash. Even if you think you can avoid getting caught, it is not worth the legal, financial, or safety risk.

Frequently asked questions

What is the NJ cell phone law?

The New Jersey cell phone law prohibits drivers from using a handheld cell phone or other electronic devices while driving. Here are the key points:

No handheld devices. Drivers cannot use handheld cell phones or other electronic communication devices while driving.
Hands-free only. Drivers are allowed to use hands-free devices, such as Bluetooth, but only if it doesn't interfere with the safe operation of the vehicle.
Texting ban. Texting while driving is strictly prohibited.

Can police check your phone after a texting ticket?

No. Police generally cannot search your phone without your consent, a warrant, or another legal reason. For a basic texting ticket, an officer may rely on what they saw. After a serious crash, phone records or device data may become part of the investigation.

Is texting at a red light illegal?

Yes, in states that have banned texting or handheld phone use at any time you are on the road, even when stopped at a red light. Some states allow phone use only when the vehicle is safely parked.