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What does the no use of horn sign mean in Turkey?

Last updated: 28 October 2026 · Sign code: TT-30 · Prohibitory and restrictive signs

In short: The no use of horn sign means you may not sound your horn in the area. It is a red-bordered white circle with a black horn crossed by a red line.

What should you do when you see this sign?

• Do not use your horn in this area.
• If you need to warn someone, slow down and stop if needed.
• Drive quietly and slowly near hospitals and schools.

Where and why is it used?

This sign is usually found near hospitals, schools and busy residential areas. The horn should only be used briefly to prevent danger; using it out of anger or to hurry someone is also against traffic etiquette.

Red-bordered white circle Ban or limit a manoeuvre. The rule starts where the sign stands. "No entry for …" signs without a red diagonal line still ban entry.

Which sign is it confused with?

Prohibitory and restrictive signs: other signs

• No entry (TT-4)
• Closed to all vehicles (TT-5)
• No cars (TT-6)
• Minimum distance (TT-25)
• No right turn (TT-26a)
• No U-turn (TT-26c)
• No overtaking (TT-27)
• Maximum speed limit (TT-29a)
• End of all restrictions (TT-32)
• End of speed limit (TT-33a)
• End of no overtaking (TT-34a)

To see every sign with pictures on one page, go to the Turkish road signs guide. For the other traffic topics, try the traffic questions.

This is a simplified drawing for learning; the official sign's dimensions and details may differ.

Sources (Turkish): Highway Traffic Law No. 2918 · Highway Traffic Regulation · KGM road signs handbook, vertical signs

Türkçe: Sesli ikaz cihazı kullanmak yasaktır (korna yasak) işareti