What do these three traffic signs mean?

What do these three traffic signs mean?

• A

  Vehicles with secondary license plates are prohibited from entering.

  According to the National Technical Standard on Road Traffic Signs QCVN 41:2019, the "no entry" sign (symbol P.101) indicates a road where all types of vehicles are prohibited from traveling in both directions, except for priority vehicles as prescribed. Identifying characteristics: circular shape, red border, white background.
  Supplementary signs are often used in conjunction with prohibition signs, warning signs, directional signs, and mandatory signs to provide clearer explanations of those signs. These signs are rectangular or square in shape and are placed directly below the main sign.

• B

  All motorized vehicles are prohibited from entering, except for those with supplementary license plates.

Japanese

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