This sign means?
- Traffic circle ahead
- Do not enter roadway
- Prohibited sign ✓
- Roundabout ahead
Answer: C. Prohibited sign
The sign is a prohibited sign: it tells you that the activity shown is not allowed.
Why this is the answer
The handbook describes regulatory signs as signs that give a direction which must be obeyed, and it explains that a sign showing a red circle with a line through it means the activity shown inside is not allowed. That is exactly what a prohibited sign does — it forbids the thing it shows rather than warning you about a road condition. So when a picture sign carries that meaning, the correct description is a prohibited sign.
Why the other answers are wrong
- A. Traffic circle ahead — A traffic circle is a type of intersection layout, and the passages never present that as the meaning of a sign forbidding an activity.
- B. Do not enter roadway — Do not enter roadway is a specific instruction about one roadway, while the passages describe the prohibition sign as forbidding whatever activity is shown inside it.
- D. Roundabout ahead — A roundabout is a roadway feature that the passages do not link to the meaning of a prohibition sign.
Remember it
Red ring with a slash through it: whatever is pictured inside is off limits.
Official handbook: Official MTO Driver's Handbook, Signs – Regulatory signs