Before you can take a road test in nearly every state, you need to complete a set number of supervised practice hours and submit a signed certification confirming those hours. Driver’s license practice hour and affidavit requirements vary by state, but the structure is consistent: a required total (often with a nighttime minimum), a logbook you keep as you drive, and a sworn statement from a parent or qualifying adult that you turn in on test day. As of 2025, 48 states and the District of Columbia build a supervised driving requirement into their graduated licensing programs.1NHTSA. GDL Supervised Hours
How Many Hours Your State Requires
Required practice hours range from 20 to 100 depending on the state, with roughly half the states landing on 50.1NHTSA. GDL Supervised Hours Iowa requires 20 hours during the learner stage and Kansas requires 25. On the higher end, Kentucky and Maryland require 60, Maine requires 70, and Oregon requires up to 100 for teens who skip driver education.2IIHS. Graduated Licensing Laws
Almost every state that mandates practice hours also carves out a portion that must happen at night. Ten nighttime hours is the most common minimum. Louisiana and New York require 15 nighttime hours out of 50, and Minnesota requires 15 out of 40.2IIHS. Graduated Licensing Laws Most states define “nighttime” as roughly 30 minutes after sunset to 30 minutes before sunrise, though exact definitions vary.
Does Driver’s Ed Reduce the Hour Requirement
In some states, yes. Alabama and Nebraska waive supervised hours entirely for teens who complete driver’s ed. Arizona drops its requirement from 30 hours to zero with driver education. Massachusetts reduces its requirement from 40 to 30 for applicants who complete a specific skills development program.2IIHS. Graduated Licensing Laws Most states treat driver’s ed and practice hours as separate requirements that both must be completed. Check your state’s motor vehicle agency to confirm whether a driver education certificate affects your hour count.
Who Can Supervise Your Practice Driving
The supervising driver generally must be a licensed adult sitting in the front passenger seat. Most states set the minimum supervisor age at 21, though a few require 25 (New Hampshire among them). Several states narrow who qualifies beyond age: Alabama requires a parent, guardian, grandparent, or driving instructor during the early learner stage, and Utah requires a parent, legal guardian, or an adult who signed the permit application accepting liability.2IIHS. Graduated Licensing Laws
The supervisor’s license must be valid and in good standing. An expired, suspended, or revoked license disqualifies someone from supervising and, in most states, from signing the certification. When a parent isn’t available for every session, many states allow any licensed adult meeting the age requirement to supervise, while the parent or guardian still signs the final affidavit. The person who signs is the person taking legal responsibility for the document’s accuracy.
How to Log Your Practice Hours
Most states provide an official driving log, either as a downloadable form or through a mobile app. A typical log records the date, start and end time, whether the session was day or night, weather conditions, and the supervising driver’s initials or signature. Some states accept any format that captures the required information; others require their own template.
The log itself usually isn’t submitted. It’s the backup documentation behind the affidavit your parent or guardian signs later. If a question comes up about the certification’s accuracy, the log is what proves the hours actually happened. Fill it in right after each session rather than reconstructing months of driving the week before the road test.
A few practical habits help: note the specific routes or maneuvers you practiced (highway merging, parallel parking, unprotected left turns), and spread hours across different conditions. Fifty hours of clear-weather suburban driving teaches far less than the same hours split across rain, highways, busy intersections, and unfamiliar areas.
The Certification Affidavit
Once you’ve completed the required hours, your parent or guardian (or, in some states, any qualifying supervising adult) signs a certification confirming the hours were completed. The document goes by different names depending on the state: “Certification of Driving Experience,” “Supervised Driving Affidavit,” “Ability Affidavit,” or similar. Whatever the label, it’s a sworn statement that you drove the required hours under proper supervision.
The form typically asks for the learner’s full name, date of birth, learner permit number, total daytime and nighttime hours, and the certifying adult’s license information. Some states require the affidavit to be notarized. Others let the certifying adult sign it in front of a license examiner at the service center. If your state requires notarization and you take care of it ahead of time, you won’t need a parent physically present at the licensing office on test day. Notary fees are set by state law and typically run between $2 and $15 per signature.
The Holding Period Runs Alongside the Hours
Hours are only one prerequisite. Every state also sets a minimum holding period for the learner permit, and you can’t test for a license until both the hours and the holding period are satisfied. Six months is the most common holding period, used in roughly 30 states. Colorado, Georgia, Iowa, Kansas, and several others require 12 months, while Illinois, Maryland, and North Carolina require nine.2IIHS. Graduated Licensing Laws
Some states also require a clean driving record during the holding period. A moving violation can reset the clock, meaning the holding period restarts from the date of conviction. This is where teens get tripped up: the hours are logged, the six or twelve months have passed, but a speeding ticket in month four pushed the eligibility date back.
Submitting the Affidavit on Test Day
Bring the completed certification to your road skills appointment, along with your learner permit, proof of identity, and any other documents your state requires. The examiner reviews the affidavit before letting you take the driving test. If the document is incomplete, unsigned, or missing, most offices will cancel the appointment on the spot.
Once accepted, the affidavit becomes part of your permanent licensing record. If you pass, it documents your compliance with the practice hour requirement. If you fail, it typically stays on file so you don’t need to resubmit for a retest. Road test fees vary widely by state, from free to over $50, and that cost is separate from the licensing fee.
What Happens If the Hours Are Falsified
Signing a certification that overstates or fabricates practice hours is a criminal offense in every state. Because the affidavit is a sworn statement submitted to a government agency, misrepresenting the hours typically falls under statutes covering false official statements, perjury, or fraud on a government document. Depending on the state, this can be charged as a misdemeanor carrying fines and potential jail time.
The risk isn’t theoretical. Only about 32% of parents in a multi-state study could correctly identify how many supervised hours their teen was required to complete, which suggests many certifications reflect guesswork rather than careful logging.1NHTSA. GDL Supervised Hours
Civil exposure is a separate concern for the signing adult. Courts have recognized that a supervisor who voluntarily assumes the duty of overseeing a learner driver can be held personally liable for failing to supervise in a reasonably careful manner, a theory sometimes called assumption of duty or negligent supervision. A related doctrine, negligent entrustment, applies when someone hands the keys to a driver they know (or should know) is incompetent. If a parent signs off on hours that never happened and the newly licensed teen causes a crash, a plaintiff’s attorney can argue the parent enabled an unprepared driver. The supervisor isn’t expected to prevent every split-second error, but they are expected to be present, alert, and actually supervising. Sitting in the back seat, for instance, has been found insufficient to establish that someone assumed the duty to supervise.