Wearing one earbud while driving in California is legal. California Vehicle Code 27400 prohibits only headsets, earplugs, or earphones that cover, rest on, or sit inside both ears, so leaving one ear open keeps you on the right side of the statute.1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs The rule treats wired earbuds, over-ear headphones, and Bluetooth earpieces the same way, and it applies to cyclists as well as drivers.
What the Both-Ears Rule Covers
VC 27400 is short. You cannot drive a motor vehicle or ride 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 A single earbud, or one side of a headset, falls outside the prohibition regardless of what you are listening to or how loud it is.
The reason is audibility. With both ears blocked, sirens, horns, and the ordinary sounds of traffic are harder to pick up. One open ear preserves enough of that information to react.
How One Earbud Fits with the Hands-Free Phone Law
A separate statute, Vehicle Code 23123.5, bars holding and operating a phone or other wireless device while driving unless the device is designed for voice-operated, hands-free use and you use it 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 free for VC 27400, and the call runs hands-free for VC 23123.5.
If your phone is mounted on the dashboard or windshield, you can also activate a function with a single swipe or tap without violating the hands-free rule.2California Legislative Information. California Code VEH 23123.5 – Driving With Handheld Devices Picking the phone up to scroll, type, or press multiple buttons is still illegal whether or not you have an earbud in.
A Caution About Noise-Canceling Earbuds
Earbuds with active noise cancellation deserve a second thought even when you only wear one. The feature exists to block outside sound, which works against the reason an ear is supposed to be free. A single noise-canceling earbud does not technically violate VC 27400, but if an officer believes the device kept you from hearing a siren or responding to traffic, it can feed a distracted-driving argument after a crash. Switching the feature off, or using a transparency mode, avoids the problem.
When Both Ears Are Allowed
VC 27400 lists specific situations where covering both ears is permitted:1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs
- Operators of authorized emergency vehicles using communication equipment on duty.
- People operating special construction equipment or highway maintenance machinery.
- Refuse collection equipment operators wearing safety headsets or earplugs.
- Anyone wearing earplugs or molds designed to reduce harmful noise levels, as long as the devices do not block the sound of a siren or horn.
- People wearing prosthetic devices that aid the hard of hearing.
Outside those categories, the both-ears prohibition applies every time you drive or ride a bicycle on a public road.
What a Ticket Costs
A violation of VC 27400 is an infraction, not a misdemeanor, so there is no jail exposure. The base fine is $25, but California’s penalty assessments and court fees push the total higher. The Marin County Superior Court’s fixed penalty schedule puts the full amount at $193, and totals can vary slightly between counties.3Marin County Superior Court. Traffic Infraction Fixed Penalty Schedule
The quieter cost is a point on your driving record. Under Vehicle Code 12810, a traffic conviction involving the safe operation of a vehicle carries one negligent-operator point,4California Legislative Information. California Code Vehicle Code 12810 – Negligent Operator which feeds into the DMV’s Negligent Operator Treatment System and can lead to warnings, a notice of intent to suspend, or probation and suspension once enough points accumulate within 12, 24, or 36 months.5California DMV. Negligent Operator Actions A single earbud ticket will not push most drivers near suspension on its own, but it stacks with other violations and at-fault accidents.
Commercial Drivers
If you hold a commercial driver’s license, federal rules apply on top of state law. The Federal Motor Carrier Safety Administration prohibits hand-held phone use for commercial vehicle operators but allows earpieces and speakerphones as hands-free alternatives, provided you can start, answer, or end a call by pressing a single button without reaching out of your normal seated position.6Federal Motor Carrier Safety Administration. Mobile Phone Restrictions Fact Sheet VC 27400 still applies in California, so a single Bluetooth earpiece satisfies both regimes. A full headset covering both ears would violate the state law even though the federal rule would not.
Cyclists are inside VC 27400 as well. The both-ears prohibition reaches riders on the road the same way it reaches drivers.1California Legislative Information. California Code VEH 27400 – Headsets and Earplugs