Road signs "Mandatory road signs"

Mandatory signs are road signs that are used to set the obligations of all traffic that uses a specific area of road. Unlike prohibitory signs, mandatory signs tell traffic what it must do, rather than must not do. Most mandatory road signs are circular, may use white symbols on a blue background with white border or black symbols on a white background with a red border, although the latter is also associated with prohibitory https://skyautokool.ee/en/