A DD on your driver's license means you have a developmental disability
The letters DD stand for developmental disability. When these letters appear on your driver's license, they indicate to law enforcement and other officials that you have a documented developmental disability. This is not a restriction on your driving — it is a designation that alerts responders to your condition if you are stopped or involved in an emergency.
The DD marking does not prevent you from driving or renewing your license. It straightforward creates a record that you have disclosed a developmental disability to your state's Department of Motor Vehicles. How this designation appears and what it means varies slightly by state, but the core purpose is the same across all states that use it.
Key Takeaways
- A DD on your license indicates you have a documented developmental disability and is visible to law enforcement during traffic stops.
- The designation does not restrict your driving privileges or prevent you from renewing your license.
- You must request the DD marking when you explore for or renew your license — it is not added automatically.
- The marking can help first responders understand your condition during an emergency, though you can also carry a separate medical alert card.
- Removing the DD marking requires contacting your state's DMV and providing updated documentation.
How the DD marking gets added to your license
You request the DD designation when you explore for a new license or renew an existing one. At your DMV appointment, you will need to bring documentation of your developmental disability — typically a letter from a doctor, psychologist, or social worker who has diagnosed or is treating you, or documentation from a state agency that serves people with developmental disabilities.
The specific documents required vary by state. Some states accept a letter from any licensed healthcare provider; others require documentation from a developmental disabilities agency or a formal diagnosis report. Contact your state's DMV before your appointment to confirm what paperwork they need. You can usually find this information on your state's DMV website or by calling the main DMV phone line.
Once you provide the documentation, the DMV staff will add the DD designation to your license. It typically appears as a code or notation on the back of the card, though some states print it on the front. You will receive your new license in the mail within the timeframe your state normally uses for license processing.
Why law enforcement and responders see this information
When a police officer runs your license during a traffic stop, the DD designation appears in their system. This alerts them that you have a developmental disability, which can change how they communicate with you or respond to the situation. An officer who knows you have a disability may speak more slowly, give clearer instructions, or call for additional support if needed.
In an emergency — such as a car accident, a medical crisis, or if you are found confused — first responders can see the DD marking and understand that your behavior or responses may be affected by your disability. This can prevent misunderstandings and help them provide more appropriate care or information.
The designation is not shared with the general public. Only law enforcement, emergency responders, and DMV staff can see it when they access your license record through official channels.
Whether you should request a DD marking
Requesting a DD marking is entirely your choice. Some people find it helpful because it alerts responders to their condition without requiring them to explain it during a stressful moment. Others prefer not to have the marking visible on their license, even to officials, and choose instead to carry a separate medical alert card or bracelet.
If you have a developmental disability and think the marking might help you in an emergency, discuss it with your doctor or case manager before your DMV appointment. They can help you weigh whether the benefits of disclosure outweigh any concerns you have about having the designation on your license.
You can also use both methods — request the DD marking and carry a medical alert card. This gives you flexibility: you control when and how you disclose your condition to strangers, but responders will also see the marking if you cannot communicate.
How to remove or update the DD marking
If you no longer want the DD designation on your license, or if your disability status has changed, you can request to have it removed or updated. Contact your state's DMV and ask about their process for removing medical designations. Most states require you to submit a written request and may ask for updated medical documentation showing that the designation is no longer necessary.
Some states allow you to remove the marking during a routine license renewal. Others require a separate appointment or a formal request. Check your state's DMV website or call their main line to learn the specific steps and any documents you will need to bring.
If you are renewing your license and do not want the DD marking to carry over to your new license, inform the DMV staff at your appointment. They can process your renewal without the designation.
DD marking versus other medical designations on licenses
Some states use other codes or designations on driver's licenses for different conditions — for example, a code for hearing impairment, vision correction requirements, or organ donor status. The DD marking is specific to developmental disability and works the same way these other designations do: it is visible to officials but not to the public, and it is optional.
If you have multiple conditions that might warrant designations, ask the DMV which ones are available in your state and which ones you want to request. You can usually request more than one designation on a single license.
What happens if you move to another state
If you move and need to get a new license in a different state, the DD marking from your old license will not automatically transfer. You will need to request it again in your new state and provide documentation of your developmental disability. The requirements and process may be slightly different, so contact your new state's DMV to learn what they need.
If you are moving and want to keep the DD marking, plan ahead: get your documentation ready before your appointment, and ask the new DMV what forms they accept. Some states are more flexible than others about what counts as proof of disability.
Frequently Asked Questions
Does the DD marking affect my driving privileges or insurance?
No. The DD marking does not restrict your ability to drive or renew your license. It also does not affect your auto insurance rates or coverage. It is purely informational for law enforcement and emergency responders.
Can I get a DD marking without a formal diagnosis?
Most states require some form of official documentation — a doctor's letter, a report from a developmental disabilities agency, or a formal diagnosis. You cannot request the marking based on self-report alone. Contact your state's DMV to learn what documentation they accept.
Will the DD marking show up if someone runs my license for a job or apartment?
No. Employers and landlords who run background checks see only your driving record and criminal history, not medical designations. The DD marking is visible only to law enforcement and emergency responders through official channels.
What if I have a developmental disability but do not want it on my license?
You do not have to request the DD marking. You can carry a separate medical alert card or bracelet instead, or straightforward inform people of your condition as you see fit. The marking is optional and only appears if you request it.
How long does it take to add or remove a DD marking?
Adding the marking usually takes as long as a regular license renewal in your state — typically two to four weeks. Removing it may be faster if you can do it at a DMV office in person, or it may take the same amount of time if you need to submit a request by mail. Call your state's DMV to ask about timing.