A sample permission letter to drive a sibling in California needs to do two things the Vehicle Code requires: explain why a parent or guardian is authorizing the teen to transport the sibling and why no reasonable alternative is available, and give a probable date when that necessity will end. The letter must be signed by the parent or legal guardian, and the provisional driver has to keep the signed original in the car whenever the sibling is a passenger.1California Legislative Information. California Vehicle Code 12814.6
Why the Letter Is Required
For the first 12 months after a provisional license is issued, a driver under 18 cannot transport anyone under 20 unless a parent, guardian, or other licensed driver aged 25 or older is in the car.1California Legislative Information. California Vehicle Code 12814.6 A younger sibling falls inside that passenger restriction.
Vehicle Code Section 12814.6(b)(2)(D) carves out an exception for immediate family. A teen can drive a sibling without a supervising adult when reasonable transportation alternatives are inadequate and the trip is genuinely necessary. The exception only works if the signed parent or guardian statement is in the vehicle.1California Legislative Information. California Vehicle Code 12814.6
This is not a blanket pass. If the sibling could take a school bus, ride with a neighbor, or use public transit at that hour, the exception does not apply. The law is written for families who truly have no better option.
What the Letter Must Contain
The statute asks for only two elements in the signed statement:1California Legislative Information. California Vehicle Code 12814.6
- An explanation of why the transportation is necessary and why other options are not available.
- An estimated date when the necessity will no longer exist.
That is the legal minimum. The law does not require the driver’s license number, the sibling’s name, specific travel times, or a parent’s phone number. In practice, though, an officer at the roadside has to decide quickly whether the letter is credible. A clear, dated letter with names, specific trips, and a contact number does that work far better than a vague note. Adding those details costs nothing and helps the exception do its job.
Sample Permission Letter
Replace the bracketed items with your family’s information. Print it or write it legibly, and have the parent or legal guardian sign the original.
[Date]
I, [Parent/Guardian Full Name], am the [parent/legal guardian] of [Driver’s Full Name], who holds a California provisional driver’s license. I authorize [Driver’s Full Name] to transport [Sibling’s Full Name], age [sibling’s age], in connection with [specific reason, for example: “driving to and from Lincoln Middle School on weekday mornings and afternoons because no school bus serves our neighborhood and I work during drop-off and pick-up hours”].
Reasonable alternative transportation is not available because [brief explanation, for example: “public transit does not run at those hours in our area, and no other licensed adult in the household is available during these times”].
This necessity is expected to end on or about [Date, for example: “June 12, 2026”].
I can be reached at [Phone Number] to verify this authorization.
[Parent/Guardian Signature]
[Printed Name]
Making the Letter Credible
Be specific about the reason. “Family purposes” is technically a reason, but it reads as filler. “Driving younger sister to swim practice on Tuesdays and Thursdays because no bus route covers the pool and both parents work until 6 p.m.” gives an officer something concrete to evaluate.
Pick a realistic end date tied to the actual need. If the trips are school-year commutes, the last day of school is a natural expiration. If the need is a season of sports, use the end of the season. You can always write a new letter when the current one expires or the circumstances change.
Keep the explanation of why alternatives are inadequate honest. The exception assumes a genuine gap in transportation, not simple convenience. A letter that overclaims may not hold up if the facts come out at a stop.
Keeping the Letter in the Car
The statute requires the licensee to keep the signed statement in their possession. Glove box or door pocket is fine. A photo on a phone is not the signed original. Do not assume an officer will accept a screenshot.
Because the letter must include an end date, it will eventually expire. Before that date, write and sign a new one if the need continues. If the family’s situation changes and the sibling no longer needs the ride, the exception no longer applies regardless of what the letter still says.
During a traffic stop, the driver should mention the family necessity exception and hand over the letter with the license and registration. Officers who work around schools are generally familiar with the provisional rules, and a well-prepared letter shortens the interaction.
What Happens Without a Valid Letter
If a teen is cited for driving a sibling without the signed statement, or without actually meeting the necessity requirement, a first offense carries either 8 to 16 hours of community service or a fine of up to $35. A second or later offense carries either 16 to 24 hours of community service or a fine of up to $50. The court picks one or the other.1California Legislative Information. California Vehicle Code 12814.6
A conviction for violating the provisional passenger restriction does not add points to the driver’s record under the statute.1California Legislative Information. California Vehicle Code 12814.6 A citation still creates a court record, though, and repeated violations can draw DMV attention to the teen’s driving privilege. Taking a few minutes to write the letter correctly is cheaper than any of that.