What are the colors of warning signs indicating upcoming hazards?
- Black letters or symbols on a white background
- Black letters or symbols on a yellow background ✓
- White letters or symbols on a blue background
- White letters or symbols on a green background
Answer: B. Black letters or symbols on a yellow background
Warning signs that indicate upcoming hazards are black letters or symbols on a yellow background.
Why this is the answer
The Texas handbook's standard colors table lists yellow as the color for general warning or caution. That is the color meaning tied to warning signs about hazards ahead, and the table describes the sign as using black letters or symbols on that yellow background. The same table assigns white and black to regulation, blue to motorist services guidance, and green to permitted movements or direction guidance, so those color combinations are not the warning color.
Why the other answers are wrong
- A. Black letters or symbols on a white background — Black letters or symbols on a white background are associated with regulation, not general warning or caution.
- C. White letters or symbols on a blue background — White letters or symbols on a blue background are used for motorist services guidance, not hazard warnings.
- D. White letters or symbols on a green background — White letters or symbols on a green background indicate permitted movements or direction guidance, not warnings.
Remember it
When you see yellow, expect a caution message rather than a service or direction message.
Official handbook: Texas Driver Handbook (DL-7), Chapter 5: Signals, Signs, and Markers , p. 26