California tail light laws require most vehicles to have two working red tail lamps, mounted at the same height on the left and right, visible from at least 1,000 feet behind the car.1California Legislative Information. California Code VEH 24600 – Rear Lighting Equipment A burned-out bulb or a tinted cover can get you pulled over, but the citation is almost always a correctable “fix-it ticket” that clears for a $25 dismissal fee once you make the repair.
What Your Tail Lights Have To Do
Vehicle Code Section 24600 sets the standard. Any non-motorcycle vehicle manufactured and first registered on or after January 1, 1958 needs at least two tail lamps, one on each side at the same height. On vehicles built on or after January 1, 1969, those lamps must be mounted between 15 and 72 inches above the ground and must be visible from 1,000 feet to the rear. Pre-1969 vehicles meet the standard at 500 feet.1California Legislative Information. California Code VEH 24600 – Rear Lighting Equipment
The light itself has to be red. California’s general lamp color rule reinforces this: all light visible from the rear of a vehicle must be red, with narrow exceptions for turn signals, backup lamps, and a few other specialized lights.2California Legislative Information. California Code VEH 25950 – Color Requirements for Vehicle Lamps
The lamps have to be on during “darkness,” defined as the period from half an hour after sunset to half an hour before sunrise, plus any other time visibility drops below 1,000 feet.3California Legislative Information. California Code VEH 280 – Darkness Defined Heavy fog, rain, or smoke in the middle of the day can trigger the requirement. Section 24250 ties it together: during darkness, every piece of required lighting equipment on the vehicle must be operating.4California Legislative Information. California Code VEH 24250 – Lighting Equipment Requirements If your headlights are on and a tail lamp is out, you’re in violation whether you know it or not.
Keeping the Lights Working
Section 24252 creates a separate maintenance duty: required lighting must be kept in good working order at all times. Bulbs must match the socket’s voltage rating, and the voltage at a tail lamp socket cannot drop below 85 percent of the bulb’s design voltage with the engine running.5California Legislative Information. California Code VEH 24252 – Lighting Equipment Maintenance
In practice, that means a dim lamp can be a violation even when the bulb still lights up. A corroded socket, failing wiring, or the wrong replacement bulb can all put you below the legal threshold. Older vehicles with aging electrical connections are the usual suspects. A quick walk around the car every few weeks, lights on, catches most problems before an officer does.
Brake Lights Follow the Same Pattern
Tail lamps and stop lamps are regulated separately but similarly. Section 24603 requires at least two stop lamps on any non-motorcycle vehicle manufactured and first registered on or after January 1, 1958. On vehicles built after 1979 the stop lamps must emit red light and be visible from at least 300 feet to the rear in both daylight and darkness.6California Legislative Information. California Code VEH 24603 – Stop Lamp Requirements Large commercial vehicles that carry clearance lamps face a 500-foot standard. A dead brake light is cited the same way a dead tail lamp is.
Smoked Covers, LED Swaps, and Other Modifications
Tinted tail light covers look clean and create real legal exposure. California attacks the problem from two directions.
Section 26101 bars anyone from selling, installing, or driving with a device that modifies the original design or performance of lighting equipment unless the change meets state approval standards.7California Legislative Information. California Code VEH 26101 – Modification of Lighting Equipment A tinted cover is exactly the kind of device the statute targets.
Even setting that aside, any tint that reduces visibility below the 1,000-foot standard, or shifts the color away from red, violates Section 24600 directly.1California Legislative Information. California Code VEH 24600 – Rear Lighting Equipment An officer doesn’t need a tape measure. A lamp that looks noticeably dimmer or off-color compared to stock is enough to justify a stop. LED conversions and custom housings are judged by the same rules; if the replacement doesn’t meet the visibility, color, and mounting requirements, it isn’t legal regardless of how it looks.
What a Ticket Actually Costs
Most tail light citations in California are handled as correctable violations, better known as fix-it tickets. Under Section 40303.5, equipment violations under Division 12 of the Vehicle Code (which covers all lighting requirements beginning at Section 24000) qualify for this treatment.8California Legislative Information. California Code VEH 40303.5 – Correctable Violations
When an officer writes a fix-it ticket, you sign a notice promising to correct the problem and provide proof. Section 40610 gives you a reasonable period to make the repair, generally not more than 30 days.9California Legislative Information. California Code VEH 40610 – Notice to Correct Violation Three steps clear the ticket:
- Fix the problem. Replace the bulb, remove the tint, or repair the wiring.
- Get the ticket signed off by a law enforcement officer or other authorized person who verifies the repair.
- Submit the signed ticket to the court with a $25 dismissal fee.10California Courts. Fix-It Ticket
Handled promptly, $25 is the entire cost. Ignore the ticket or miss the correction deadline and it converts to a standard infraction with a base fine plus California’s penalty assessments, which routinely multiply a small base fine several times and push the total well past $100. Equipment violations handled as correctable do not add points to your driving record, so insurance premiums are not affected.
Section 40610 has an escape hatch for officers: if the defect is part of a pattern, or the vehicle has been cited for the same problem before and wasn’t properly fixed, the officer can write a standard citation instead of a fix-it.
If You Want To Fight It
For most drivers the fix-it process makes contesting the citation pointless. If you were written up for a standard infraction rather than a correctable violation, a defense may be worth the effort.
The strongest one is showing the failure was recent and unknown to you. A dated mechanic’s receipt, or evidence that the bulb failed shortly before the stop, undercuts the premise that you were knowingly driving with defective equipment. Section 24252 uses the phrase “at all times,” but courts recognize that bulbs fail without warning.5California Legislative Information. California Code VEH 24252 – Lighting Equipment Maintenance
For a modification citation, the defense is proving the modification didn’t actually drop visibility below the required distance. That’s harder than it sounds, because you need objective test data at the statutory range. Photographs from the scene showing the lamp functioning can help if the dispute is about what the officer saw.
Older Cars and Small Trailers
The two-lamp requirement only applies to vehicles manufactured and first registered on or after January 1, 1958. A pre-1958 vehicle can legally run with a single tail lamp, provided it’s red and meets the applicable visibility standard. Trailers and semitrailers built after July 23, 1973 that are less than 30 inches wide may also use a single tail lamp, mounted at or near the vertical centerline.1California Legislative Information. California Code VEH 24600 – Rear Lighting Equipment Everything newer and wider needs two.