On a driver’s license that follows the national standard used by most states, Restriction F means the vehicle you drive must have an outside rearview mirror. It is not the code for corrective lenses, even though plenty of online sources mix the two up. Glasses and contacts are almost always Code B.1American Association of Motor Vehicle Administrators (AAMVA). D20 Traffic Records Systems Data Dictionary – Driver License Restriction Code Because each state writes its own code list, the only way to be certain what any letter means on your license is to check the chart published by the agency that issued it.
What the Mirror Restriction Actually Requires
The American Association of Motor Vehicle Administrators (AAMVA) publishes the standardized restriction codes most state licensing agencies work from. In that standard, F is labeled “Outside Mirror.”1American Association of Motor Vehicle Administrators (AAMVA). D20 Traffic Records Systems Data Dictionary – Driver License Restriction Code A driver with Restriction F must have a functioning exterior rearview mirror on the vehicle whenever they drive it.
Depending on the state and the reason for the restriction, that may mean a mirror on the driver’s side, the passenger side, or both. The mirror has to be mounted properly, unobstructed, and adjusted so you can see traffic behind and beside you. A cracked, folded-in, or missing mirror puts you out of compliance.
This is one of the few restrictions tied partly to the vehicle rather than only to you. If you borrow a car with a damaged or missing mirror, you are the one violating the restriction, not the car’s owner.
Why Licensing Agencies Add Restriction F
Agencies add an outside-mirror restriction when a physical condition makes it harder for a driver to observe surrounding traffic using the interior mirror alone. The common reasons are hearing impairment, reduced peripheral vision, and monocular vision, meaning significantly worse acuity in one eye. Some states also apply it when a driver has trouble turning their head to check blind spots while backing up, or when the road test was taken in a vehicle with the steering wheel on the right side.
The restriction usually comes out of a medical review or vision screening during the licensing process. If an eye doctor or audiologist documents one of these conditions, the agency adds Code F so you can drive safely with the help of the extra mirror.
The Letter Can Mean Something Else in Your State
AAMVA’s codes are a recommendation, not a federal rule. Every state motor vehicle agency decides whether to adopt the standard list, modify it, or build its own. The result is that the same letter can carry different meanings depending on where your license was issued. In most states F means an outside mirror. In at least one state, F indicates the driver must hold a valid learner permit until a specified date. In a few others, the code covers a combination of mirrors and hearing aids.
Before you make any assumptions about what the F on your license requires, pull up your state DMV or driver services website and search for “restriction codes.” Most states publish a plain table matching each letter to its meaning. A quick call to the local licensing office works too.
If You Thought F Meant Glasses
Plenty of people land on this question because they wear glasses or contacts and want to know what the restriction on their license means. In almost every case, that restriction is Code B, not F. Under the AAMVA standard, Code B means “corrective lenses must be worn,” and the vast majority of states follow that convention.1American Association of Motor Vehicle Administrators (AAMVA). D20 Traffic Records Systems Data Dictionary – Driver License Restriction Code
The code gets placed on your license when you can pass the vision screening with glasses or contacts but not without them. Most states set the minimum at 20/40 on the Snellen scale.2Prevent Blindness. State Vision Screening and Standards for License to Drive If your corrected vision clears that bar, you keep your license with the condition that you wear your lenses every time you drive.
What Happens If You Drive Without Complying
Driving in breach of any license restriction is a traffic violation in every state, though the penalty range is wide. On the lighter end, you get a citation and a fine. Some states add points to your driving record, which can push up your insurance premiums. In states that treat the violation more seriously, driving outside a restriction is a misdemeanor, carrying higher fines and the possibility of a short jail term.
The ticket is not the only risk. If you are in an accident while driving without a required mirror, your insurance company may argue you were driving outside the terms of your license. That can complicate a claim or hand the other driver’s attorney a useful detail in a lawsuit.
Getting the Restriction Removed
A mirror restriction tied to hearing loss or peripheral vision can sometimes be removed if the underlying condition improves. You will need documentation from the right medical professional, an audiologist for hearing or an ophthalmologist for vision, confirming the change. Take that to your licensing agency and ask about retesting. If the condition has not changed, the restriction stays.
Removing a corrective-lenses restriction works similarly. After LASIK, PRK, or a natural improvement, get an eye exam showing your uncorrected vision now meets the state minimum, then go to the DMV and take the vision test without your glasses or contacts. Pass, and the agency reissues your license without the restriction. Expect a reissue fee in the range of roughly $10 to $50 depending on the state. After refractive surgery, some states ask you to wait until your eyes have fully healed before testing; your surgeon can tell you when that is likely to be.