Yes, you can wear one earbud while driving in California. California Vehicle Code 27400 only prohibits covering or inserting listening devices in both ears, so a single earbud, one side of a headset, or a Bluetooth earpiece in one ear is legal.1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs The rule works the same way for wired earbuds, over-ear headphones, and wireless earpieces.
What the Statute Prohibits
VC 27400 bars driving a motor vehicle or riding a bicycle while wearing a headset covering both ears, earplugs in both ears, or earphones covering, resting on, or inserted in both ears.1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs The prohibition attaches to the word “both.” Leave one ear open and you comply, regardless of what is playing.
The reasoning is about awareness. Blocking both ears makes it harder to hear sirens, horns, and the ambient sounds of traffic. Keeping one ear free preserves enough of that input to react.
How One Earbud Fits with the Hands-Free Phone Law
A different statute, Vehicle Code 23123.5, prohibits holding and operating a phone or wireless device while driving unless the device is designed for voice-operated, hands-free use and is used that way.2California Legislative Information. California Code VEH 23123.5 – Driving With Handheld Devices A single Bluetooth earbud satisfies both laws at the same time: one ear stays open under VC 27400, and the call runs hands-free under VC 23123.5.
If your phone is mounted on the dashboard or windshield, a single swipe or tap of the finger is also allowed under the hands-free law.2California Legislative Information. California Code VEH 23123.5 – Driving With Handheld Devices Picking up the phone to scroll, type, or press multiple buttons is still illegal whether or not you have an earbud in.
Noise-Canceling Earbuds
A single noise-canceling earbud does not technically violate VC 27400, since one ear remains uncovered. But active noise cancellation is designed to block outside sound, which cuts against the reason the law leaves one ear free. If an officer believes the device prevented you from hearing a siren or reacting to traffic, that can feed a distracted-driving argument after an accident. Turning the feature off or switching to a transparency mode is the safer setting.
Who Is Exempt from the Both-Ears Rule
VC 27400 lists a handful of situations where both ears can be covered:1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs
- Drivers of authorized emergency vehicles using communication equipment on duty.
- Operators of special construction equipment or highway maintenance machinery.
- Refuse collection equipment operators wearing safety headsets or earplugs.
- Anyone wearing earplugs or molds to reduce harmful noise, provided the devices do not block the sound of a siren or a vehicle horn.
- People wearing prosthetic devices that aid the hard of hearing.
If you don’t fall into one of those categories, the both-ears prohibition applies every time you drive or ride a bicycle on a public road.
Penalties if You Wear Two
A VC 27400 violation is an infraction, not a misdemeanor, so no jail time is on the table. The base fine is $25, but California’s assessments and court fees push the total higher. The Marin County Superior Court’s fixed penalty schedule lists a total of $193, and the figure can vary slightly by county.3Marin County Superior Court. Traffic Infraction Fixed Penalty Schedule
A conviction also adds one negligent-operator point to your driving record under Vehicle Code 12810, because the offense involves the safe operation of a vehicle.4California Legislative Information. California Code Vehicle Code 12810 – Negligent Operator Points feed the DMV’s Negligent Operator Treatment System, which triggers warning letters, notices of intent to suspend, and eventually suspension or probation once enough points accumulate within 12, 24, or 36 months.5California DMV. Negligent Operator Actions One earbud ticket on its own won’t reach those thresholds, but it stacks with other violations.
Commercial Drivers
Holders of a commercial driver’s license have a federal layer on top of the state rule. The Federal Motor Carrier Safety Administration prohibits hand-held phone use for commercial vehicle operators and permits earpieces and speakerphones as hands-free alternatives, with calls started, answered, or ended by pressing a single button without leaving the normal seated position.6Federal Motor Carrier Safety Administration. Mobile Phone Restrictions Fact Sheet VC 27400 still applies in California, so a commercial driver using a headset covering both ears would violate the state law even where the federal rule alone would not. A single Bluetooth earpiece satisfies both.
Cyclists
The statute reaches bicycles by its own terms, so the same one-earbud limit applies when you’re riding.1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs Two earbuds on a bike is the same infraction as two earbuds behind the wheel.