Official sources
DMV One Way is an independent educational service. It is not a government app and is not affiliated with, endorsed by or operated by any Department of Motor Vehicles, state licensing agency or other government authority. It does not book tests or issue permits or licenses.
Our practice questions, explanations, handbook chapters and road sign library are based on public government information. The official materials are our starting point, not something we copy: all questions, explanations, lessons, illustrations and videos are created by our team without AI. Rules and test requirements differ by state and can change, so always check your state's official driver's handbook and licensing agency.
Road signs
- FHWA · Manual on Uniform Traffic Control Devices (MUTCD)
- FHWA · MUTCD, 11th Edition with Revision 1 (December 2025)
- FHWA · Standard Highway Signs, 2024 release status
- California DMV · Laws and Rules of the Road
- New York DMV · Chapter 4: Traffic Control
Your state's motor vehicle agency and handbook
Each agency publishes the current driver's handbook and knowledge test rules for its state. Links follow the official USA.gov · State motor vehicle services directory.
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- American Samoa Not listed by USA.gov; contact the territorial government.
- Guam
- Northern Mariana Islands Not listed by USA.gov; contact the territorial government.
- Puerto Rico
- U.S. Virgin Islands