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Joseph Yoon

Yoon Law Firm, PLLC

4118 Leonard Drive
Fairfax, VA 22030

Phone: 703-260-6060

Website: yoonfirm.com

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Virtual Forensic Library

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.

Virtual Forensic Library

FROM OUR BLOG

Personal Contact: Using the Officer's Observations Against Them

03/10/2025

Written by Charles GoodwinEdited by Michelle Behan and Steven Hernandez The typical DUI investigation has three phases. It begins with the vehicle in motion and focuses on driving patterns that officers are trained might indicate impairment. Next is personal contact, where the officer will observe physical manifestations that are also purportedly correlated with alcohol ingestion and impairment. Finally, the officer will...

Introduction of Autonomous Vehicles and SAE Levels of Driving Automation

02/12/2025

By By Lance Hendron An autonomous vehicle, in other words is self-driving car, is a car that is capable of operating with reduced or no human input.1 In 2014, the Society of Automotive Engineers (SAE), launched SAE J3016 Recommended Practice: Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor Vehicles, commonly referenced as the SAE Levels of...

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Benefits of NCDD Membership

Members of the NCDD not only demonstrate that they are qualified DUI defense attorneys, but they have access to valuable information and resources. We provide access to documentation blood alcohol testing devices and scientific articles related to alcohol, drugs, driving, and testing.

We offer training on trial techniques and scientific testing, and we provide access to experts and a comprehensive knowledge base of cases and motions. With all of these resources at your fingertips, you will be able to win more cases

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Membership Plans

Depending on your level of experience, we offer multiple plans for NCDD Membership. Attorneys who have been practicing for less than six years are eligible for a New Attorney membership, while those who have been practicing for over six years can receive a Seasoned Attorney membership. We also offer memberships for Public Defenders.