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The Most Dedicated DUI
Attorneys Belong to the NCDD

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Enter your city, state, or Zip code below to locate a qualified attorney who has demonstrated a commitment to defend those accused of DUI and related crimes.

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Experienced DUI Defense Attorneys

Members of the NCDD are the most experienced DUI defense attorneys in the United States and Canada. Regardless of your location, we can connect you with a lawyer who can help you understand the drunk driving laws in your state or province and work with you to determine your best options for defense.

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NCDD Board Certification

Attorneys who are Board Certified by the NCDD can demonstrate that they have a substantive understanding of DUI laws, evidentiary issues, and effective methods of defense. To become Board Certified, a lawyer must pass written and oral examinations that reflect the knowledge and skills needed for an enhanced level of advocacy in the field of DUI defense.

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ABA: Find a Board Certified Lawyer

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NCDD National Task Force
Committee List 2025-2026

The National College for DUI Defense National Task Force maintains a number of committees that are intended to provide relevant information to members, represent the positions of the NCDD and the Board, and protect the rights of citizens pertaining to impaired driving cases. The individuals who serve on these committees play an important role in fulfilling the overall goals of the NCDD and its Board.

2026 Summer Session - DUI Trials Unleashed: From Voir Dire to Victory

2026 Summer Session - DUI Trials Unleashed: From Voir Dire to Victory

Jul 16, 2026 - Jul 18, 2026

This summer in Nashville, NCDD is breaking the mold. Our Summer Session DUI Trials Unleashed; From Voir Dire to Victory will be shorter presentations, sharper, and intensely practical—designed around live demonstrations and real-world skill application rather than traditional lecture blocks....

Serious Science: Advanced Course in Blood Drug Analysis & Trial Advocacy

Serious Science: Advanced Course in Blood Drug Analysis & Trial Advocacy

Aug 07, 2026 - Aug 12, 2026

The Serious Science Blood Drug Analysis course is designed to combine hard science and trial advocacy. There is no better course on forensic science and trial advocacy in America. We start with hard science, including hands-on work in the Shimadzu Laboratory....

NCDD NHTSA SFST Student Course

NCDD NHTSA SFST Student Course

Sep 24, 2026 - Sep 26, 2026

Not all SFST seminars are equal. NCDD’s three-day SFST Seminar is led by Anthony Palacios, one of the nation’s leading Standardized Field Sobriety Testing experts. A former Georgia SFST State Coordinator, SFST/DRE Staff Instructor, and National SFST Training Curriculum Assessment...

30th Annual DWI Means Defend With Ingenuity

30th Annual DWI Means Defend With Ingenuity

Oct 21, 2026 - Oct 24, 2026

NACDL & NCDD's 30th Annual "DWI Means Defend With Ingenuity" Seminar "FROM ARREST TO ACQUITTAL: The Essentials for a Successful DUI Defense" will be held at the Sahara Las Vegas Hotel & Casino, October 21-24, 2026. In DUI defense, the science...

SAVE THE DATE: Breath Testing From Input to Verdict

SAVE THE DATE: Breath Testing From Input to Verdict

Nov 04, 2026 - Nov 07, 2026

SAVE THE DATE - NOVEMBER 4-7, 2026 - PHOENIX, AZ This program will review the underlying science involved in breath testing and the common misconceptions among the courts and police. The course will cover the common errors in breath testing from...

NCDD Webinars

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Helping Clients. Supporting Attorneys. Strengthening NCDD.
Through our partnership with MINDR, NCDD Members can connect clients with trusted solutions from Intoxalock (Official Ignition Interlock Partner) and Breathe Easy Insurance (Official SR22/FR44 Insurance Partner). For more information and to obtain discounts for clients of NCDD members, click here.

Carleton Penn

Carleton Penn

The National College of DUI Defense's Member in the Spotlight is Carleton Penn III of Fairfax, Virginia. As a third generation attorney, Carleton says he went into the practice of law to help people.

Carleton was born and raised in Leesburg, VA, where his father worked as an attorney and later a judge while his mother worked as a teacher, homemaker, and office manager. Carleton worked many jobs before becoming an attorney, one of which was working as a checker at a local Safeway store. He says this job helped him develop valuable skills to relate to and communicate effectively with many different types of people. He once worked a summer job with a local construction supply company where he helped deliver building supplies throughout the Washington, D.C. area. As a senior in college, Carleton had more education, with the exception of the comptroller, than any other employee. A favorite memory of his before he was an attorney, was while working here. When a bill collector came to the company's parking area to take a pay check from one of his coworkers, Carleton told the boss to advise the bill collector he was on private property and would be arrested for trespassing if he did not leave immediately. This gave him much respect and appreciation by his co-workers. After graduating from law school, he had to move as he could not work for any firm in Leesburg as it would pose a conflict with his dad who was a judge; Carleton moved to Fairfax, VA, where he lived for 18 years until his father retired.

In addition to the National College of DUI Defense, Carleton is a member of several bar associations including the Fairfax and Loudoun Bar Associations, the Virginia State Bar, the Virginia Criminal Defense Attorneys Association, and the Virginia Trial Lawyers Association. He is well-versed in many aspects of DUI defense and criminal/traffic defense in general.

Carleton has been married to Renee for 22 years. They have a son CP', who is in high school. Carleton's hobbies include joining and working with the Fairfax Volunteer Fire Department where he is a Life Member and received awards from that Department for Most Training Hours and Most Riding Hours. For relaxation, and as a testament to his caring and nurturing personality, he enjoys feeding and watching the neighborhood birds and his pet "critters". Pictured here is one of his pals "Roxey and this year's chillens". Anyone that knows Carleton knows that caring for animals is a true passion of his. It was Arthur Schopenhauer who said, "Compassion for animals is intimately associated with goodness of character, and it may be confidently asserted that he who is cruel to animals cannot be a good man."

His advice for new lawyers is to "listen to your clients, fulfill their needs, and do what is best for them." When asked about his favorite win as an attorney, he couldn't narrow it down to one and said, "When the client is happy, I'm happy." Much of this is credited to some of the influential people in his life, which include his parents, his grandmother, and fellow attorneys.

When asked what the NCDD means to him he replied, "NCDD represents the epitome of DWI Defense Attorneys with are an incredible reserve of resources available to teach others; I have always learned from their seminars, lectures and socializing."

We at the NCDD thank you Carleton for your commitment to justice and impeccable service.

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vflVirtual Forensic Library

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NCDD members have access to a comprehensive forensic library that provides invaluable information to be used when defending clients charged with DUI.

This library includes scientific articles on drug and alcohol intoxication, toxicology and pharmacology, methods of testing for blood alcohol content, field sobriety testing, potential errors that may occur during testing, accident reconstruction, expert testimony, and evidentiary rules. This valuable information can ensure that you provide a high quality defense to clients charged with DUI based on the circumstances of their case and the laws in their state.

Members in the SpotlightMembers in
the Spotlight

06/27/2025

Priscilla Frisby

Priscilla Frisby: The NCDD Member in the Spotlight is Priscilla Frisby of Tucson, Arizona. Priscilla has practiced law for approximately 17 years. She speaks fluent Spanish. Priscilla was born in Douglas, Arizona and raised in neighboring Agua Prieta, Sonora, Mexico (across the border from Douglas, Arizona). At the age of 10, her parents bought a house on the United States side,...

Members in the SpotlightLatest from
Our Blog

03/30/2026

AI in Court Filings: The Ethics Line Between Assistance and Abdication

By Ryan Katz It is no secret that Artificial Intelligence, or AI, is vastly changing the landscape of many different fields. While the practice of law is certainly not something anybody would want...

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NCDD Journal

Find the latest news and announcements in our journal.

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