How is the sign classified that imposes the mandatory use of chains for driving on snow?

Question

DentroTest · Accepted Answer

The correct answer is Mandatory sign (Señal de obligación). The specific sign is R-It is visually identified by being circular with a blue background and a white symbol, characteristics that define mandatory signs. This sign requires drivers to continue their journey only with chains or authorized devices on at least the drive wheels. 'No entry' signs would be circular with a red border, and 'priority' signs have distinct shapes (such as a diamond or inverted triangle).

How is the sign classified that imposes the mandatory use of chains for driving on snow?

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