Certain highway signs require drivers to obey an indicated instruction. Such signs are known as:
- Regulatory signs. ✓
- Warning signs.
- Information signs.
- Guide signs.
Answer: A. Regulatory signs.
The signs that require drivers to obey an indicated instruction are regulatory signs.
Why this is the answer
The Texas handbook says regulatory traffic signs tell drivers what they should or should not do in certain circumstances, and drivers must obey them just as they obey traffic laws. That matches the question's description of signs carrying a required instruction. Warning signs are described separately as signs that alert you to conditions immediately ahead, such as hazards or changes in direction. The passages do not describe information or guide signs as the signs that impose this kind of required instruction.
Why the other answers are wrong
- B. Warning signs. — Warning signs alert drivers to hazards or conditions ahead, not signs that impose a required instruction in the same way as traffic laws.
- C. Information signs. — The handbook passages do not describe information signs as the signs drivers must obey like traffic laws.
- D. Guide signs. — The handbook passages do not describe guide signs as the signs drivers must obey like traffic laws.
Remember it
Remember it by the word itself: regulatory signs regulate your behavior, so you must follow them like a traffic law.
Official handbook: Texas Driver Handbook (DL-7), Chapter 5: Signals, Signs, and Markers , p. 30