Which of the following is NOT a regulatory sign?

• A. Stop signs
• B. Railway crossing
• C. Deer crossing
• D. Speed limit

Answer: (C)

Regulatory signs enforce traffic laws and tell you exactly what actions are required. A deer crossing sign doesn’t command a legal action; it simply warns you to be alert for deer on or near the road and to slow down if needed. In contrast, a stop sign requires you to come to a complete stop, a speed limit sign sets the maximum legal speed, and a railroad crossing sign alerts you to a crossing and the need to proceed with caution or stop if a train is approaching. So the deer crossing sign is not regulatory, which is why it’s the correct choice.