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Texas Car / Permit practice question · Road Signs

A diamond-shaped sign with a yellow background is used to:

Yellow diamond-shaped road sign

Answer choices

  • warn drivers of possible hazards or changes in road conditions ahead— Correct answer
  • mark the end of a divided highway
  • give a rule that must be obeyed, such as a speed limit
  • point out nearby food and gas services

Why this is the answer

A diamond shape is used only to warn of existing or possible hazards on or beside the road, and yellow is the color for general warning or caution. So the sign tells you to be ready for something ahead. Rules you must obey are generally on vertical rectangular regulatory signs, and an octagon is reserved for stop signs.

Source: Texas Driver Handbook — Traffic Signs

Content reviewed against official driver handbooks · August 12, 2026

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