Warning Signs
Added Lane sign
A lane enters from the left and continues alongside yours, so through traffic does not have to merge.
- Shape
- Diamond
- Color
- Yellow with black
- Type
- Warning
What to do
- Hold your lane and your speed, but watch for entering vehicles settling into the space beside you.
How to read it
Diamond. A diamond is a warning. It tells you about a hazard or a change in the road ahead.
Yellow with black. Yellow is a general warning about the road ahead.
Warning sign. Warning signs tell you about a hazard or a change ahead so you can slow down in time.
Signs follow the national standard (the MUTCD) in every state. Your state handbook is the final word for your test.
Related signs
Signs that look similar or come up together on the test.
Road signs quiz and flashcards
Drill every sign on your phone, along with the rest of your state’s test.
Not a government website. USA DMV (usadmv.app) is an independent study resource. It is not affiliated with, endorsed by or operated by any state DMV, the Texas Department of Public Safety or any other government agency. Practice questions are written to reflect official driver handbooks but are not the official test questions. Always confirm current requirements with your state’s licensing agency.