V-1.2, r. 4.1 - Regulation respecting off-highway vehicle trail signs
13. The mandatory symbol, made up of a green circle inside of which a message appears, means that the message is mandatory.
The interdictory symbol, made up of a red circle inside of which a message appears and crossed by a red oblique line, means that the message announces a prohibition.
The mandatory and interdictory messages may be supplemented by any inscription to specify the terms of application.