Mandatory sign

   Uses
   Uses
   Uses
   Uses a combination of both Type A and Type B

   Uses (historically used )
   Does not use the mandatory sign group

Mandatory signs are road signs that are used to set the obligations of all traffic that uses a specific area of road. Most mandatory road signs are circular, and may use white symbols on a blue background with a white border, or black symbols on a white background with a red border, although the latter is also associated with prohibitory signs.[1]

  1. ^ Vienna Convention on Road Signs and Signals (PDF). United Nations Economic and Social Council. 6 June 1978. pp. 44–46. Retrieved 2007-09-14.

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