California’s high beam law, set out in Vehicle Code 24409, requires you to switch to low beams within 500 feet of an oncoming vehicle and within 300 feet when following another car. A ticket carries a $35 base fine that grows to about $234 once penalty assessments are added, plus one point on your driving record.1California Legislative Information. California Vehicle Code VEH 24409
When You Have To Dim
Two distances do all the work. Approaching an oncoming vehicle, you must dim within 500 feet so your beam doesn’t blind the other driver. Following another vehicle, you must dim within 300 feet so your light doesn’t flood their mirrors.1California Legislative Information. California Vehicle Code VEH 24409
Outside those distances, high beams are expected. Dark rural highways, unlit mountain roads, and stretches without streetlights are exactly where they belong. The rule is about toggling: high beams on when you need the range, low beams on when another driver is close enough to be affected.
What a Ticket Actually Costs
The base fine is $35. California’s penalty assessment system adds state and county surcharges, a DNA identification fund fee, a court construction penalty, and a mandatory court operations fee, bringing the total to roughly $234.2California Courts. Uniform Bail and Penalty Schedules 2025 Courts apply that formula to all traffic infractions in this category, so the add-ons aren’t negotiable.
Miss the 20-day payment window and Vehicle Code 40310 tacks on a 50 percent late charge, pushing the total past $350.2California Courts. Uniform Bail and Penalty Schedules 2025 Ignore the ticket entirely and you’re looking at a failure-to-appear charge, a hold on your license, and civil assessment fees that dwarf the original fine.
The point is where the lasting cost lives. A conviction adds one point to your driving record, and that point can influence your insurance premiums for years.3California Legislative Information. California Vehicle Code VEH 12810
Repeat violations get steeper. A second infraction in the same year doubles the base fine ceiling to $200, and a third within a year can reach $250, with the same penalty multipliers stacking on top.4California Legislative Information. California Vehicle Code 42001
Keeping the Point off Your Record
If you’re eligible, completing an eight-hour traffic violator school makes the conviction confidential, so the point doesn’t show up when your insurance company pulls your record. For a single-point infraction like this one, the court clerk can approve attendance without a hearing as long as you hold a valid license.5California Courts. Rule 4.104 – Procedures and Eligibility Criteria for Attending Traffic Violator School
You can only use this option once every 18 months. If you’ve already done traffic school within that window, you’re ineligible for a clerk-granted approval, though a judge may still allow it at their discretion.5California Courts. Rule 4.104 – Procedures and Eligibility Criteria for Attending Traffic Violator School You’ll still pay the full fine on top of the school fee. Traffic school doesn’t save you money now; it protects you from the insurance increase later.
How the Point Fits Into Your Driving Record
A single high beam ticket won’t threaten your license. What matters is accumulation. California’s Negligent Operator Treatment System watches your record in rolling 12-, 24-, and 36-month windows:
- Warning letter: 2 points in 12 months, 4 in 24, or 6 in 36.
- Notice of intent to suspend: 3 points in 12 months, 5 in 24, or 7 in 36.
- Probation or suspension: 4 points in 12 months, 6 in 24, or 8 in 36.
At the suspension threshold, the DMV presumes you’re a negligent operator and can restrict or suspend your driving privileges.6California Department of Motor Vehicles. Negligent Operator Actions You’re entitled to a hearing where the DMV reviews your full record.7California Legislative Information. California Vehicle Code VEH 12810.5
Most drivers are nowhere near these thresholds from a high beam ticket alone. The practical risk is a high beam point stacking on top of other moving violations.
Why High Beams Are the Wrong Move in Fog and Rain
Some drivers instinctively flip on high beams when visibility drops. That makes things worse. High beams project light at a higher angle, and in fog or heavy rain, that light bounces off water droplets and scatters back into your eyes. The result is a wall of glare that shortens how far you can see.
Low beams aim downward, closer to the road surface, and cut under the fog layer. Fog lights, mounted even lower, work better still for the same reason.
Vehicle Code 24409 doesn’t carve out a weather exception. The 500-foot and 300-foot dimming rules apply in rain, fog, and snow just as they do on a clear night. And even when you’re alone on the road with no dimming obligation, low beams are the safer choice in bad weather.
Flashing High Beams From Emergency Vehicles
Authorized emergency vehicles can use flashing high-beam headlamps as part of their emergency lighting. Vehicle Code 25252.5 allows a system that alternates upper-beam flashes between the left and right headlamps, restricted to situations covered by Vehicle Code 21055, such as pursuits and emergency calls.8California Legislative Information. California Vehicle Code 25252.5
If flashing high beams come toward you, it’s an emergency vehicle. Pull to the right and stop.
What Happens if High Beams Cause a Crash
A ticket is one thing. A crash caused by blinding another driver is another. If you drive with high beams on and an oncoming driver, temporarily blinded by your glare, hits something or loses control, you may share liability for the resulting injuries and property damage.
California uses pure comparative negligence, so each party in a crash can be assigned a percentage of fault. Even if the blinded driver bears most of the responsibility for failing to slow or pull over, the driver who left high beams on in violation of Vehicle Code 24409 can be held partly responsible. A driver found 30 percent at fault would be liable for 30 percent of the other party’s damages.
Medical bills, lost wages, and vehicle damage from an injury crash can climb into the tens of thousands. Against that, the $234 fine is not the number to worry about; the Vehicle Code violation becomes evidence of negligence in the civil claim.
When the Problem Is Your Bulbs, Not the Switch
Headlights that are modified or misaligned can produce glare as bad as high beams, even on the low setting. California requires all forward-facing lights to emit white or yellow light only.9California Legislative Information. California Vehicle Code VEH 25950 Blue, purple, green, or red headlights are illegal and draw a separate citation.
Aftermarket LED or HID bulbs dropped into halogen headlight housings are a common problem. The housing was designed to focus light from a halogen filament in a specific pattern. An LED or HID bulb in that same housing scatters light differently, often throwing intense glare upward into oncoming drivers’ eyes regardless of whether high beams are selected. Under federal safety standards, headlamps must be tested and certified as complete units, and an LED bulb is not a certified replacement for a halogen housing. Improperly converted headlights can result in a fix-it ticket or a failed safety inspection.
If oncoming drivers flash their lights at you when your high beams are off, the culprit may be aftermarket bulbs or misaligned aim. A professional headlight aim adjustment often solves the problem without any equipment change.