Mo G
Last verified: September 22, 2026
The first real storm of the season rolls through the Bay Area sometime in the next few weeks, and within about ten minutes of it starting you will be surrounded by grey cars with grey windows and no lights on, appearing out of the spray like they were dropped there. It happens every year. Most of those drivers are not being careless. They just do not know that California already told them to switch the lights on, and told them in a sentence almost nobody reads.
When do you legally have to turn your headlights on in California? From 30 minutes after sunset until 30 minutes before sunrise, any time you cannot see 1,000 feet ahead, and, critically, any time you need your windshield wipers because of fog, rain or snow. The California Driver’s Handbook states that in wipers weather you must turn on your low-beam headlights.
The seven situations California names
The handbook does not leave this to judgment. It lists the conditions.
| Condition | What is required |
|---|---|
| From 30 minutes after sunset until 30 minutes before sunrise | Headlights on |
| Any time it is too dark to see 1,000 feet away | Headlights on |
| Any time you need your wipers for fog, rain or snow | Low-beam headlights on |
| Clouds, dust, smoke or fog keeping you from seeing other vehicles | Headlights on |
| Mountain roads and tunnels, even on a sunny day | Headlights on |
| Where a road sign says headlights must be on | Headlights on |
| When the sun sits low on the horizon | Headlights on, so others can see you |
And one prohibition that catches people in exactly the conditions where they think they are being clever: it is illegal to drive using only your parking lights. The handbook repeats that in two separate sections. Parking lights are not a dim setting for headlights. They are a different thing.
The wipers rule is the one people miss, and the handbook is partly to blame
Here is a small thing we noticed while verifying this piece, and it explains why the rule has never sunk in with California drivers.
Section 5 of the handbook, under “Using Your Headlights,” states the rule as an obligation: “If you need to use your windshield wipers due to fog, rain, or snow, you must turn on your low-beam headlights.”
Section 8, the one actually titled “Safe Driving,” is where a driver goes looking for rain guidance. It says only this: “When it is raining, use your low-beam headlights.” No “must.” No mention of wipers as the trigger at all.
Same handbook. Two sections. One states a requirement, the other offers a suggestion, and the suggestion lives in the chapter people are far more likely to open. That is the fifteenth time our verification runs have turned up a California agency saying two different things on its own publications, and it is a small one, but it is the reason a rule that has been on the books for years still surprises people.
The practical version is easy to remember and works in every case: wipers on, lights on. Not the automatic setting, not daytime running lights. Reach over and turn the switch to low beam, then glance at your dash to confirm the headlight icon is lit. On a lot of vehicles, daytime running lights leave your tail lights dark, which means the driver closing on you from behind in the spray has nothing to aim at.
High beams: two distances worth memorizing
California gives two specific numbers for dimming, and they are different depending on which way the other car is pointing.
- Within 500 feet of a vehicle coming toward you, dim your high beams to low.
- Within 300 feet of a vehicle you are following, dim your high beams to low.
In fog or heavy smoke, skip the high beams entirely. The handbook is blunt about why: high beams reflect back off the fog and create glare, making things worse for you, not better. Low beams only, and never fog lights or parking lights alone.
What the handbook says about rain, and the number that matters
Two quantified rules that almost never make it into a driving-tips article:
- On a wet road, reduce your speed by 5 to 10 mph.
- In a heavy rainstorm you may not see more than 100 feet ahead. If you cannot see farther than 100 feet, it is not safe to drive faster than 30 mph.
That second one is the useful one, because it converts a vague instruction into a check you can actually run. One hundred feet is roughly six car lengths. If the car six lengths ahead of you is a smear, you are above a safe speed at anything over 30.
The handbook also flags the moment California drivers underrate most: the first rain after a dry stretch. Oil and dust that have been baking into the pavement all summer have not been washed away yet, and the surface is at its most slippery in the opening minutes of the storm. That is the first week of the season, every season.
What a lighting ticket costs
A burned-out headlight is normally written as a correctable violation, the thing everyone calls a fix-it ticket. Once you repair it and show the court proof, Vehicle Code 40611 lets the court collect a $25 transaction fee for each violation and collect no bail at all. The Judicial Council’s 2026 bail schedule works through an example where a driver corrects two lighting-related violations and pays $50 total, two times $25.
One honest caveat, and we would rather flag it than guess. California’s legislative website has been returning empty pages for statutory text through several of our verification runs, and the lighting sections fall past the point where the bail schedule text we could retrieve cut off. So we are not publishing a base bail figure for a headlight violation. What we can tell you is verified: the correction route exists and costs $25 per violation once you show proof.
Worth understanding, though: correction works when there is equipment to repair. If the citation was written for not switching your lights on rather than for a lamp that failed, there is nothing to present as fixed. Ask the court how yours was written before you assume the $25 path is open. We walked through the same correctable-versus-not distinction on plate violations in does California require a front license plate.
One more thing about the calendar
Daylight saving time ends on the first Sunday in November, which this year is November 1, 2026. Your evening commute moves into the dark overnight, and the 30-minutes-after-sunset line arrives about an hour earlier than your habits expect. If you drive home at 5:30, you are about to be driving home in the dark, in the rain, on a road at its slipperiest. All three at once, starting the same week.
Frequently asked questions
Do you have to turn your headlights on when it rains in California?
Yes. The California Driver’s Handbook states that if you need to use your windshield wipers because of fog, rain or snow, you must turn on your low-beam headlights. The trigger is the wipers, not the darkness, so the rule applies in a midday shower just as much as at dusk.
Are daytime running lights enough in California rain?
What California asks for specifically is low-beam headlights. Daytime running lights are a separate system, and on many vehicles they illuminate the front only and leave the tail lights dark, which is the end that matters to the driver behind you in spray. Switch the control to low beam rather than relying on an automatic setting.
How much is a headlight ticket in California?
A failed headlight is typically cited as correctable. Under Vehicle Code 40611, once you provide proof of correction the court may collect a $25 transaction fee per violation and no bail. If instead you were cited for failing to turn your lights on, there is no equipment to repair, so confirm with the court how the citation was written.
Before the season starts
Walk around the car once this week. Low beams, high beams, tail lights, brake lights, plate light. It takes two minutes and it is the cheapest safety work you will do all year. While you are out there, glance at the sticker in the corner of your plate, because the other thing that goes wrong in the first storm is getting pulled over for something you forgot about in July. If the month on that sticker has passed, renew your California registration with Sticker Quicker and the registration e-copy lands in your inbox in minutes, with the sticker on next-day FedEx. No office visit, no waiting on the mail while the rain starts. Licensed California DMV Business Partner, Occupational License #90656. If you ride, we covered the motorcycle side in California motorcycle registration fees and rules, and if your winter plans run toward the Sierra, read what R-1, R-2 and R-3 chain control actually mean before you go.
Primary sources
- California DMV, California Driver’s Handbook, Section 5: An Introduction to Driving (last modified June 12, 2025)
- California DMV, California Driver’s Handbook, Section 8: Safe Driving (last modified June 11, 2025)
- Judicial Council of California, Uniform Bail and Penalty Schedules, 2026 Edition (effective January 1, 2026)
- California Vehicle Code sections 40522 and 40611, via California Legislative Information
About the author
Mo G is the founder of Sticker Quicker, a licensed California DMV Business Partner with full online access (Occupational License #90656) headquartered in Fremont and serving all of California. He has spent decades handling California vehicle registrations, titles and fleet compliance, and has overseen service for more than 500,000 customers.
