This sign means?
- Traffic island ahead
- Hidden intersection ahead
- Do not turn left at the intersection ✓
- Right turn only at the intersection
Answer: C. Do not turn left at the intersection
The sign means do not turn left at the intersection.
Why this is the answer
The handbook groups signs like this under regulatory signs, which give a direction that must be obeyed. It explains that a red circle with a line through it means the activity shown inside the circle is not allowed. So when the sign shows a left turn inside that prohibition, the message is that you must not make a left turn there. The left-turn section also starts from the idea that signs can tell you not to turn, so the sign overrides the normal permission to turn left.
Why the other answers are wrong
- A. Traffic island ahead — The passages do not describe this sign as a warning about a traffic island; the rule stated is that the shown activity is not allowed.
- B. Hidden intersection ahead — The passages do not describe this sign as a warning about a hidden intersection; it is a regulatory direction about the turn shown.
- D. Right turn only at the intersection — The sign tells you not to turn left, but it does not say that a right turn is the only permitted movement.
Remember it
A red circle with a slash cancels the action shown inside it.
Official handbook: Official MTO Driver's Handbook, Signs – Regulatory signs