This sign (no u turn) means:

1. No left turn
2. No stopping
3. No U-turn ✓
4. Detour ahead

Answer: C. No U-turn

A sign showing a U-turn symbol crossed out by a red circle with a slash means no U-turn: you may not reverse direction there.

Why this is the answer

The manual describes regulation signs as white rectangles with black or red letters or symbols, and says that a red circle with a slash over a symbol means the action shown is not allowed. Applied to a sign picturing a U-turn arrow, the crossed-out symbol tells you that turning around at that spot is prohibited, so the sign is about a U-turn and nothing else.

Why the other answers are wrong

• A. No left turn — A no-left-turn sign carries a left-pointing arrow, not a U-shaped arrow, so it does not match this symbol.
• B. No stopping — Stopping restrictions are posted as regulation signs about parking and standing, not with a U-turn arrow under a slash.
• D. Detour ahead — Detour information comes from signs that guide you onto a different route, not from a symbol showing a forbidden turn.

Remember it

Red circle plus slash always means the pictured action is banned, so read the symbol underneath to know what is being banned.