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What does the minimum speed sign mean in Turkey?

Last updated: 28 October 2026 · Sign code: TT-41a · Mandatory signs

Minimum speed road sign (Turkey)
Minimum speed (TT-41a)

In short: The minimum speed sign means you may not drive slower than the number shown on that road. It is a blue circle with a white number inside.

What should you do when you see this sign?

  • Do not drop below the number when the road and traffic allow.
  • Do not use this road with vehicles that cannot reach this speed (tractors, construction machines).
  • In queues, fog or after an accident, drive at a safe speed.

Where and why is it used?

Blue circles give instructions, so a number in a blue circle is the lowest speed and a number in a red-bordered circle is the highest. Minimum speed signs are mostly used on motorways and in tunnels where traffic must keep flowing.

Blue circle Show what you must do. A red circle says "don't", a blue circle says "do this".

Which sign is it confused with?

Maximum speed limit road sign
Maximum speed limitTT-29aOn the maximum speed sign the number is in a red-bordered white circle and shows the highest speed.
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Mandatory signs: other signs

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: Mecburi asgari hız işareti