California Vehicle Code 23123.5 bans drivers from holding and operating a phone, tablet, or similar wireless device behind the wheel. You can use a device that’s mounted to your windshield, dashboard, or center console, but only through voice commands or a single tap or swipe. A first offense carries a $20 base fine; a second or later offense carries $50, and both grow substantially once California’s penalty assessments are added. A second conviction within 36 months also puts a point on your driving record.
What the Statute Actually Prohibits
The rule reaches further than most drivers assume. You cannot drive while holding and operating a handheld wireless telephone or electronic wireless communications device. That covers smartphones, tablets, laptops with mobile data, pagers, and similar gadgets.1California Legislative Information. California Code Vehicle Code 23123.5
“Operating” is the word doing the heavy lifting. You don’t need to be on a call to get cited. Scrolling a playlist, reading a text notification, or opening a map all count. If the device is in your hand while you’re doing it, that’s a violation.
Mounted Devices and the Single-Touch Rule
The statute allows one narrow form of physical interaction while driving: a single tap or swipe. Two conditions have to be met.2California Legislative Information. California Code VEH 23123.5
- The device has to be securely mounted to the windshield, dashboard, or center console. Loose on the seat or in your lap doesn’t qualify.
- You get one swipe or tap to activate or deactivate a feature. Typing an address, scrolling messages, or any interaction that takes more than one touch violates the statute.
Where you put the mount matters. Vehicle Code 26708 limits windshield placement to a seven-inch square in the lower corner farthest from the driver, or a five-inch square in the lower corner nearest the driver as long as it sits outside the airbag deployment zone.3California Legislative Information. California Code VEH 26708 Dashboard and center console mounts are also allowed as long as the device doesn’t block your view.
The practical version: mount the phone, set your route before you move, and keep your hand off the screen once you’re rolling. One tap to answer a call through a hands-free system is fine. Anything beyond that is a ticket.
Factory-Installed Systems Are Not Covered
Manufacturer-installed systems embedded in the vehicle fall outside the statute.1California Legislative Information. California Code Vehicle Code 23123.5 A built-in touchscreen for navigation, climate, or media is not what 23123.5 is about. The exemption covers systems that came with the car from the factory, not aftermarket units you install yourself.
Red Lights and Stopped Traffic Still Count
Pulling up to a red light doesn’t suspend the law. California courts have read “driving” to include sitting in a lane of traffic. In People v. Nelson (2011), the Court of Appeal held that a driver stopped at a traffic light was still driving for purposes of the cell phone statutes, reasoning that the Legislature used “drive” and “operate” interchangeably and was concerned with device use on public roadways generally, not only while vehicles are moving.4Justia. P. v. Porter The statute does not apply when your car is lawfully parked. Waiting at a signal, idling in a jam, or inching through a drive-through all count as driving.
Drivers Under 18 Face a Stricter Rule
If the driver is a minor, 23123.5 is not the governing section. Vehicle Code 23124 bars drivers under 18 from using a wireless telephone or electronic wireless communications device while driving at all, even hands-free.5California Legislative Information. California Code VEH 23124 The mounted-device, single-tap allowance that adults get does not extend to teen drivers. Fines track the adult schedule at $20 for a first offense and $50 for each one after, and the teen statute does include an emergency call exception for law enforcement, a health care provider, or the fire department.
What a Ticket Actually Costs
The base fine is $20 for a first offense and $50 for each subsequent offense.1California Legislative Information. California Code Vehicle Code 23123.5 Those numbers are deceptive. California stacks penalty assessments and surcharges onto every traffic fine: state penalty assessments, court construction fees, DNA fund penalties, county penalties, and a 20% state surcharge all compute per $10 of base fine, and court operation and conviction fees get added on top.6California Courts. Uniform Bail and Penalty Schedules
In practice, a $20 base fine ends up somewhere between about $150 and $165, and a $50 base fine can push past $250. Totals vary a little by county because local assessments differ. Whatever the county, the final amount will be many times the posted base.
Points on Your Record
A first conviction under 23123.5 does not add a point. A second or later conviction within 36 months of a prior conviction for the same offense assesses one point.7California Legislative Information. California Code Vehicle Code 12810.3 That point stays on your record, can raise your insurance, and feeds into the DMV’s negligent-operator program, which can suspend a license once enough points accumulate inside a short window.
Commercial Drivers Face Much Bigger Exposure
If you drive on a CDL, federal rules land on top of the state fine. The Federal Motor Carrier Safety Administration prohibits handheld mobile phone use while operating a commercial motor vehicle, with fines up to $2,750 for the driver and up to $11,000 for an employer who allows or requires the conduct.8Federal Motor Carrier Safety Administration. Mobile Phone Restrictions Fact Sheet Multiple cell phone violations in a commercial vehicle count as serious traffic violations and can disqualify a CDL for 60 days after a second offense and 120 days after a third.9Federal Motor Carrier Safety Administration. Electronic Devices/Mobile Phones For a driver whose income depends on the license, two tickets can end a career.
Civil Liability If You Cause a Crash
The criminal fine is the smaller problem if someone gets hurt. Under California Evidence Code 669, violating a safety statute creates a legal presumption that you failed to exercise due care. If you were holding your phone in violation of 23123.5 and rear-ended another vehicle, a court can presume you were negligent without the injured person having to build negligence from other evidence.10California Legislative Information. California Evidence Code 669
The presumption is rebuttable, so you can try to overcome it, but you’re starting from behind. The injured party still has to show your violation actually caused their injuries, and that burden is far easier to carry when you were caught breaking a law written to prevent exactly that kind of crash. If you were on the clock when it happened, your employer can be pulled in under respondeat superior. Cell phone records, dashcam footage, and crash reconstruction data make these cases increasingly straightforward for plaintiffs to prove.